RAILWORKS CORP
S-4, 1999-11-01
ARRANGEMENT OF TRANSPORTATION OF FREIGHT & CARGO
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<PAGE>   1

    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON NOVEMBER 1, 1999

                                                     REGISTRATION NO. 333-
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                               ------------------

                                    FORM S-4
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                               ------------------

                             RAILWORKS CORPORATION
           (Exact name of co registrant as specified in its charter)
                               ------------------

<TABLE>
<S>                                  <C>                                  <C>
              DELAWARE                               4789                              58-2382378
  (State or other jurisdiction of        (Primary Standard Industrial               (I.R.S. Employer
   incorporation or organization)        Classification Code Number)             Identification Number)
</TABLE>

                               ------------------

   FOR INFORMATION REGARDING ADDITIONAL REGISTRANTS, SEE "TABLE OF ADDITIONAL
                                 REGISTRANTS".
                               ------------------

                             1104 KENILWORTH DRIVE
                                   SUITE 301
                           BALTIMORE, MARYLAND 21204
                                 (410) 512-0500
    (Address, including zip code, and telephone number, including area code,
                  of registrants' principal executive offices)

                                 JOHN G. LARKIN
                            CHIEF EXECUTIVE OFFICER
                             RAILWORKS CORPORATION
                        1104 KENILWORTH DRIVE, SUITE 301
                           BALTIMORE, MARYLAND 33807
                                 (410) 512-0500
 (Name, address, including zip code, and telephone number, including area code,
                             of agent for service)

                                WITH A COPY TO:

                             MARY A. BERNARD, ESQ.
                                KING & SPALDING
                          1185 AVENUE OF THE AMERICAS
                         NEW YORK, NEW YORK 10036-4003
                                 (212) 556-2100
                               ------------------

    APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED EXCHANGE OFFER:  As soon as
practicable after the effective date of this Registration Statement.

    If the securities being registered on this Form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, please check the following box.  [ ]
                               ------------------

                        CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------------------
- --------------------------------------------------------------------------------------------------------------------------
                                                                  PROPOSED             PROPOSED
                                                                   MAXIMUM             MAXIMUM
       TITLE OF CLASS OF SECURITIES             AMOUNT TO      OFFERING PRICE     AGGREGATE OFFERING        AMOUNT OF
             TO BE REGISTERED                 BE REGISTERED      PER UNIT(1)           PRICE(1)         REGISTRATION FEE
- --------------------------------------------------------------------------------------------------------------------------
<S>                                         <C>               <C>               <C>                    <C>
11 1/2% Senior Subordinated Notes due
  2009.....................................    $50,000,000          100%             $50,000,000             $13,900
- --------------------------------------------------------------------------------------------------------------------------
Guarantees of 11 1/2% Senior Subordinated
  Notes due 2009...........................        --                --                   --                   (2)
- --------------------------------------------------------------------------------------------------------------------------
- --------------------------------------------------------------------------------------------------------------------------
</TABLE>

(1) Estimated solely for the purpose of computing the registration fee in
    accordance with Rule 457(f)(2) under the Securities Act of 1993.
(2) Pursuant to rule 457(n), no additional registration fee is payable with
    respect to the Guarantees of the Additional Registrants.

    THE REGISTRANTS HEREBY AMEND THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANTS
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT OF 1933 OR UNTIL THIS REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2

                        TABLE OF ADDITIONAL REGISTRANTS

<TABLE>
<CAPTION>
                                        STATE OR OTHER          PRIMARY STANDARD
                                       JURISDICTION OR             INDUSTRIAL
EXACT NAME OF REGISTRANT AS            INCORPORATION OR          CLASSIFICATION          I.R.S EMPLOYER
SPECIFIED IN ITS CHARTER                 ORGANIZATION              CODE NUMBER         IDENTIFICATION NO.
- ---------------------------         ----------------------   -----------------------   ------------------
<S>                                 <C>                      <C>                       <C>
Alpha Keystone Engineering,
Inc...............................            PA                          8711             25-1784777
Armcore Acquisition Corp..........            DE                   Holding Co.             52-2128915
Armcore Railroad Contractors,
  Inc.............................            IL                          1629             37-1046831
Annex Railroad Builders, Inc......            IN                          1629             35-1075159
Birmingham Wood, Inc..............            AL                          2491             63-1003823
Comstock Holdings, Inc............            DE                   Holding Co.             13-3928343
L.K. Comstock & Company, Inc......            NY                          1731             13-0594190
Comtrak Construction, Inc.........            GA                          1629             58-1894467
Condon Brothers, Inc..............            WA                          1629             91-1360907
CPI Concrete Products
  Incorporated....................            TN                          3272             62-0913636
Earl Campbell Construction
  Company, Inc....................            TX                          1629             76-0023665
FCM Rail, Ltd.....................            MI                          6159             38-2343435
F&V Metro RW, Inc.................            DE                   Holding Co.                Pending
RWKS Transit, Inc.................            NY                          1731             11-2626106
Impulse Enterprises of New York,
  Inc.............................            NY                          1731             11-3121948
V&R Electrical Contractors,
  Inc.............................            NY                          1731             11-2843830
Gantrex RW, Inc...................            DE                   Holding Co.                Pending
Gantrex Corporation...............            PA                          3469                Pending
Gantrex Systems, Inc..............            OE                          3469                Pending
H.P. McGinley, Inc................            PA                          2491             23-1921197
Kennedy Railroad Builders, Inc....            PA                          1629             23-1685297
M-Track Enterprises, Inc..........            NY                          1629             06-1093474
McCord Treated Wood, Inc..........            AL                          2491             63-1115907
Merit Railroad Contractors,
  Inc.............................            MO                          1629             43-1426110
Midwest Construction Services,
  Inc.............................            IN                          1629             35-1549700
Mid West RW, Inc..................            DE                   Holding Co.                Pending
Mid West Railroad Construction &
Maintenance Corporation of
  Wyoming.........................            WY                          1629             83-0287238
Minnesota Railroad Service,
  Inc.............................            TN                          1629             41-1519121
Neosho Asia, Inc..................            KS                          1629             48-1197426
Neosho Central America, Inc.......            KS                          1629             48-1212618
Neosho Construction Company,
  Inc.............................            KS                          1629             48-1090375
Neosho Contractors, Inc...........            WY                          1629             74-2073664
Neosho Incorporated...............            KS                          1629             48-0673656
Neosho International, Inc.........            KS                          1629             48-1194483
New England Railroad Construction
  Co., Inc........................            CT                          1629             06-0996497
Northern Rail Service and Supply
  Company, Inc....................            MI                          1629             38-2974642
Parsons Railway Shops, Inc........            KS                          1629             48-1065603
Railcorp, Inc.....................            OH                          1629             34-1546698
Railroad Service, Inc.............            TN                          1629             41-1522172
Railroad Specialties, Inc.........            IN                          1629             35-1855813
Railworks Canada, Inc.............            DE                          1629                Pending
Sheldon Electric, Inc.............            DE                          1731             52-2128782
</TABLE>
<PAGE>   3

<TABLE>
<CAPTION>
                                        STATE OR OTHER          PRIMARY STANDARD
                                       JURISDICTION OR             INDUSTRIAL
EXACT NAME OF REGISTRANT AS            INCORPORATION OR          CLASSIFICATION          I.R.S EMPLOYER
SPECIFIED IN ITS CHARTER                 ORGANIZATION              CODE NUMBER         IDENTIFICATION NO.
- ---------------------------         ----------------------   -----------------------   ------------------
<S>                                 <C>                      <C>                       <C>
Southern Indiana Wood Preserving
Co., Inc..........................            IN                          2491             35-1694417
U.S. Trackworks, Inc..............            MI                          1629             38-2458838
U.S. Railway Supply, Inc..........            IN                          1629             35-1911080
Wm. A. Smith Construction Co.,
  Inc.............................            TX                          1629             74-1187403
Wm. A. Smith Rerailing Services,
  Inc.............................            TX                          1629             76-0423514
W.T. Byler, Inc...................            TX                         1,629             74-1807673
Wood Waste Energy, Inc............            VA                         [2498]            43-1616799
</TABLE>

     The address, including zip code, and telephone number, including area code,
of the principal executive offices of each of the additional registrants is the
same as for RailWorks Corporation as set forth on the facing page of this
registration statement.

     The name, address, including zip code, and telephone number, including area
code of the agent for service for each of the additional registrants is the same
as for RailWorks Corporation as set forth on the facing page of this
registration statement. Copies of communications to any additional registrant
should be sent to Mary A. Bernard, King & Spalding, 1185 Avenue of the Americas,
New York, New York 10036 (telephone number (212) 556-2100).
<PAGE>   4

                 SUBJECT TO COMPLETION, DATED NOVEMBER 5, 1999

                                (RAILWORKS LOGO)

                               OFFER TO EXCHANGE

                   11 1/2% SENIOR SUBORDINATED NOTES DUE 2009
           THAT HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933
                                      FOR
    ALL OUTSTANDING UNREGISTERED 11 1/2% SENIOR SUBORDINATED NOTES DUE 2009
                               ------------------

                              THE REGISTERED NOTES

     - The terms of the new notes are substantially identical to the outstanding
       notes and the existing notes, except that, like the existing notes, the
       new notes will be freely tradable.

     - Interest is payable on April 15 and October 15, commencing October 15,
       1999.

     - We may redeem the notes at any time on or after April 2004.

     - In addition, until April 15, 2002, we may redeem up to 35% of the notes
       with the net proceeds of certain equity offerings.

     - If we undergo a change of control or sell certain of our assets, we may
       be required to offer to purchase the notes from you.

     - The notes are unsecured and subordinated to all of our existing and
       future senior debt, including our obligations under our credit facility.

     - Our existing domestic subsidiaries have guaranteed the notes on senior
       subordinated basis.

                               THE EXCHANGE OFFER

     - The exchange offer will expire at 5:00 p.m. New York City time, on
                 , 1999, unless extended.

     - The exchange offer is not subject to any conditions other than that the
       exchange offer not violate applicable law or any applicable
       interpretation of the staff of the SEC.

     - All old notes that are validly tendered and not withdrawn will be
       exchanged.

     - Tenders of old notes may be withdrawn at any time prior to the expiration
       of the exchange offer.

     - We will not receive any proceeds from the exchange offer.
                               ------------------

     INVESTING IN THE NOTES INVOLVES A HIGH DEGREE OF RISK.   SEE "RISK FACTORS"
BEGINNING ON PAGE 10.

     WE ARE NOT ASKING YOU FOR A PROXY AND YOU ARE REQUESTED NOT TO SEND US A
PROXY.

     NEITHER THE SEC NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR
DISAPPROVED OF THESE SECURITIES OR DETERMINED THAT THIS PROSPECTUS IS ACCURATE
OR COMPLETE OR PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY
REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

                THE DATE OF THIS PROSPECTUS IS           , 1999
<PAGE>   5

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                              PAGE
                                                              ----
<S>                                                           <C>
Risk Factors................................................    10
Use of Proceeds.............................................    18
Capitalization..............................................    19
Pro Forma Financial Statements..............................    20
Selected Historical Consolidated Financial Data.............    28
Management's Discussion and Analysis of Financial Condition
  and Results of Operations.................................    30
Business....................................................    38
The Exchange Offer..........................................    52
Management..................................................    62
Certain Relationships and Related Party Transactions........    67
Principal Stockholders......................................    69
Description of Capital Stock................................    70
Description of Credit Facility..............................    71
Description of the New Notes................................    73
Exchange Offer; Registration Rights.........................   109
Book-Entry; Delivery and Form...............................   112
Plan of Distribution........................................   113
Certain United States Federal Tax Considerations............   115
Legal Matters...............................................   116
Experts.....................................................   116
Where You Can Find More Information.........................   116
Special Note Regarding Forward-Looking Statements...........   117
Index to Financial Statements...............................   F-1
</TABLE>

                                        i
<PAGE>   6

                               PROSPECTUS SUMMARY

     The following summary contains basic information about RailWorks, the notes
and the exchange offer. It likely does not contain all the information that is
important to you. For a more complete understanding of the notes and the
exchange offer, we encourage you to read this entire document and the documents
to which we have referred you.

     As used in this prospectus, unless the context otherwise requires, "we,"
"us," "our," or "RailWorks" refers to the business of RailWorks Corporation and
its subsidiaries. The term "rail systems" means transit systems, regional and
shortline railroads, Class I railroads and commercial and on-site rail
infrastructure of industrial companies. Unless the context otherwise requires,
"pro forma" information gives effect to (1) the two acquisitions that we have
completed during 1998 and the ten acquisitions that we have completed since
January 1, 1999 as if we had completed these acquisitions on January 1, 1998 and
(2) the sale of the old notes to the initial purchaser and the application of
the net proceeds from that sale.

                             RAILWORKS CORPORATION

     We are a leading provider of integrated rail system services and products
to a diverse base of customers throughout the United States. We believe we are
positioned to grow significantly due to our ability to comprehensively design,
supply, construct and maintain rail systems. Our strategy is based on providing
a full range of rail-related services and products on a "turnkey" basis
throughout North America and offering rail system solutions under the
"RailWorks" brand. We provide track construction, rehabilitation, repair and
maintenance; rail electrification and installation of communication and
signaling systems; and related products and supplies. We offer these services to
a wide variety of customers, including Class I and shortline railroads, publicly
funded transit authorities and commercial and industrial companies. We also
provide non-rail products and services such as electrical contracting, bridge
and highway support structures, and related concrete products. For the year
ended December 31, 1998, we had pro forma revenue of $488.6 million and pro
forma EBITDA of $53.2 million. For the six months ended June 30, 1999, we had
pro forma revenue of $239.4 million and pro forma EBITDA of $25.8 million.

                                COMPANY HISTORY

     RailWorks Corporation was formed in March 1998 to become a leading
nationwide provider of rail system services, including construction and
rehabilitation, repair and maintenance, and related products. We currently have
26 operating companies that have been in the rail systems business for an
average of 27 years. We have acquired the operating companies through the
following transactions:

     - In August 1998, we acquired in separate concurrent transactions 14 groups
       of companies engaged principally in the rail system services and products
       business and we consummated our initial public offering (the "IPO"). We
       refer to these groups of companies as the "Founding Companies."

     - In November 1998, we acquired two companies.  We refer to these companies
       as the "1998 Acquired Companies."

     - In the first eight months of 1999, we acquired 10 companies. We refer to
       these companies as the "1999 Acquired Companies." We refer to the 1998
       Acquired Companies and the 1999 Acquired Companies together as the
       "Acquired Companies." The Acquired Companies had combined fiscal 1998
       revenue of $219.1 million.

                                        1
<PAGE>   7

                              RECENT DEVELOPMENTS

     We have signed letters of intent to purchase two companies that provide
rail products and supplies and construction services. Western Tar Products
Corporation, based in Terre Haute, Indiana, has been supplying creosote-treated
wooden railroad ties for over 100 years. W.T. Byler Company, Incorporated, based
in Houston, Texas, provides rail construction and maintenance and heavy
construction services in Texas, Louisiana, Oklahoma, Arkansas and New Mexico.
Based on information provided to us by these two companies, they had combined
revenue for calendar 1998 of approximately $74.8 million. We expect to execute
definitive purchase agreements, which will have customary closing conditions,
including completion of due diligence, [PRIOR TO THE END OF 1999]. However, we
cannot guarantee you that we will acquire either of these companies. We intend
to finance these acquisitions through borrowings under our credit facility.

     We regularly engage in discussions with potential acquisition candidates.
We currently have no agreements, understandings or letters of intent with
respect to any other acquisitions.

                               THE EXCHANGE OFFER

The Exchange Offer.........  We are offering to exchange:

                             - $1,000 principal amount of our registered 11
                                1/2% senior subordinated notes due April 15,
                               2009, which we refer to as new notes,

                             for

                             - each $1,000 principal amount of our unregistered
                               11  1/2% senior subordinated notes due April 15,
                               2009, which we refer to as old notes

                             We sometimes will refer to the new notes and the
                             old notes together as the notes. Currently,
                             $50,000,000 aggregate principal amount of old notes
                             are outstanding. Under the indenture governing the
                             notes, we previously issued $125,000,000 aggregate
                             principal amount of 11 1/2% senior subordinated
                             notes due 2009, which we will refer to as the
                             existing notes.

Expiration date............  The exchange offer will expire at 5:00 p.m., New
                             York City time, on           , 1999, unless we
                             extend it. In that case the phrase "expiration
                             date" will mean the latest date and time to which
                             we extend the exchange offer. We will issue new
                             notes as soon as practicable after that date.

Conditions to the exchange
  offer....................  The exchange offer is subject to customary
                             conditions. We may assert or waive these conditions
                             in our sole discretion. If we materially change the
                             terms of the exchange offer, we will resolicit
                             tenders of the old notes. Please read the section
                             "The Exchange Offer -- Conditions of the Exchange
                             Offer" of this prospectus for more information
                             regarding conditions to the exchange offer.

Procedures for
participating in the
  exchange offer...........  If you wish to participate in the exchange offer,
                             you must complete, sign and date an original or
                             faxed letter of transmittal in accordance with the
                             instructions contained in the letter of transmittal
                             accompanying this prospectus. Then you must mail,

                                        2
<PAGE>   8

                             fax or deliver the completed letter of transmittal,
                             together with the old notes you wish to exchange
                             and any other required documentation to First Union
                             National Bank, which is acting as exchange agent.
                             Its address appears on the letter of transmittal.
                             By signing the letter of transmittal, you will
                             represent to and agree with RailWorks that

                             - you are acquiring the new notes in the ordinary
                               course of your business,

                             - you have no arrangement or understanding with
                               anyone to participate in a distribution of the
                               new notes, and

                             - you are not an "affiliate," as defined in Rule
                               405 under the Securities Act, of RailWorks.

                             If you are a broker-dealer that will receive new
                             notes for your own account in exchange for old
                             notes that you acquired as a result of your
                             market-making or other trading activities, you will
                             be required to acknowledge in the letter of
                             transmittal that you will deliver a prospectus in
                             connection with any resale of the new notes.

Resale of exchange notes...  We believe that you can resell and transfer your
                             new notes without registering them under the
                             Securities Act and delivering a prospectus, if you
                             can make the same three representations that appear
                             above under the heading "Procedures for
                             participating in the exchange offer." But, our
                             belief is based on interpretations of the SEC
                             expressed in some SEC no-action letters to other
                             issuers in exchange offers like ours.

                             We cannot guarantee that the SEC would make a
                             similar decision about this exchange offer. If our
                             belief is wrong, or if you cannot truthfully make
                             the representations mentioned above, and you
                             transfer any new note issued to you in the exchange
                             offer without meeting the registration and
                             prospectus delivery requirements of the Securities
                             Act, or without an exemption from such
                             requirements, you could incur liability under the
                             Securities Act. We are not indemnifying you for any
                             such liability.

                             A broker-dealer can only resell or transfer new
                             notes if it delivers a prospectus.

Special procedures for
  beneficial owners........  If your old notes are held through a broker,
                             dealer, commercial bank, trust company or other
                             nominee and you wish to surrender such old notes,
                             you should contact your intermediary promptly and
                             instruct it to surrender your old notes on your
                             behalf.

Guaranteed delivery
  procedures...............  If you cannot meet the expiration date deadline, or
                             you cannot deliver your old notes, the letter of
                             transmittal or any other documentation on time,
                             then you must surrender your old notes according to
                             the guaranteed delivery procedures appearing in

                                        3
<PAGE>   9

                             this prospectus under the heading "The Exchange
                             Offer -- Guaranteed Delivery Procedures."

Acceptance of your old
notes and delivery of the
  new notes................  We will accept for exchange any and all old notes
                             that are surrendered in the exchange offer prior to
                             the expiration date if you comply with the
                             procedures of the offer. The new notes will be
                             delivered as soon as practicable after the
                             expiration date.

Withdrawal rights..........  You may withdraw the surrender of your old notes at
                             any time prior to the expiration date.

Certain federal income tax
  considerations...........  You will not have to pay federal income tax as a
                             result of your participation in the exchange offer.

Exchange agent.............  First Union National Bank is serving as the
                             exchange agent in connection with the exchange
                             offer. First Union National Bank also serves as
                             trustee under the indenture for the notes.

Failure to exchange old
notes will adversely affect
  you......................  If you are eligible to participate in this exchange
                             offer and you do not surrender your old notes as
                             described in this prospectus, you will not have any
                             further registration or exchange rights. In that
                             case your old notes will continue to be subject to
                             restrictions on transfer. As a result of such
                             restrictions and the availability of registered new
                             notes, the old notes are likely to be a much less
                             liquid security than before.

                             Neither the Delaware General Corporation Law nor
                             the indenture relating to the notes gives you any
                             appraisal or dissenters' rights or any other right
                             to seek monetary damages in court if you do not
                             participate in the exchange offer.

                                 THE NEW NOTES

     The new notes have the same financial terms and covenants as the old notes
and the existing notes, which are as follows:

Issuer.....................  RailWorks Corporation.

Securities offered.........  $50,000,000 principal amount of 11  1/2% senior
                             subordinated notes due 2009.

Maturity...................  April 15, 2009.

Interest rate..............  11 1/2% per year (calculated using a 360-day year).

Interest payment dates.....  April 15 and October 15, beginning on October 15,
                             1999. Interest began accruing on September 30, 1999
                             when we first issued the old notes.

Ranking....................  The new notes will be unsecured senior subordinated
obligations of RailWorks and they will rank junior to our existing and future
                             senior debt, including our obligations under our
                             credit facility. The guarantees of the new notes by
                             our subsidiaries will be subordinated to existing
                             and future senior debt of such subsidiaries. On a
                             pro forma basis, as of June 30, 1999, pro
                                        4
<PAGE>   10

                             forma for the acquisition of the 1999 Acquired
                             Companies, new borrowings under our credit
                             facility, and the sale of the old notes and the
                             application of the net proceeds, we would have had
                             approximately $19.4 million of senior debt,
                             excluding approximately $85.6 million that we
                             expect to have available to borrow under our credit
                             facility.

Guarantees.................  Our domestic subsidiaries will unconditionally
                             guarantee the new notes. If we create or acquire a
                             new domestic subsidiary, it will guarantee the
                             notes unless we designate the subsidiary as an
                             "unrestricted subsidiary" under the indenture or
                             the subsidiary does not have significant assets.

Optional redemption........  We cannot redeem the new notes until April 15,
                             2004. After April 15, 2004, we may elect to redeem
                             some or all of the notes and the existing notes at
                             the redemption prices listed under the heading
                             "Description of the Exchange Notes" section under
                             the heading "Optional Redemption," plus accrued and
                             unpaid interest.

Optional redemption after
  equity offerings.........  At any time, which may be more than once, before
                             April 15, 2002, we may elect to redeem up to 35% of
                             the outstanding notes and the existing notes with
                             funds that we raise in one or more equity offerings
                             as long as:

                             - we pay 111.500% of the face amount of the notes,
                               plus interest;

                             - we redeem the notes and the existing notes within
                               120 days of completing the equity offering;

                             - at least 65% of the aggregate principal amount of
                               notes and the existing notes issued remains
                               outstanding.

Change of control offer....  If a change in control of RailWorks occurs, we must
                             give holders of the new notes and the existing
                             notes the opportunity to sell their new notes to
                             us, at 101% of their face amount, plus accrued and
                             unpaid interest.

                             We might be unable to pay you the required price
                             for any new notes and the existing notes you
                             present to us at the time of a change of control,
                             because:

                             - we might not have enough cash at that time; or

                             - the terms of our senior debt may prevent us from
                               paying.

Asset sale proceeds........  If we or our subsidiaries engage in asset sales, we
                             cannot freely use the proceeds of those sales.
                             Generally, we must either invest the net cash
                             proceeds from such sales in our business within a
                             specified period of time, prepay senior debt or
                             make an offer to purchase a principal amount of the
                             notes and existing notes equal to the excess net
                             cash proceeds. The purchase price for the notes and
                             the existing notes would be 100% of their principal
                             amount, plus accrued and unpaid interest.

                                        5
<PAGE>   11

Certain additional
indenture provisions.......  The indenture governing the notes is the same
                             indenture that governs the existing notes. It
                             contains covenants limiting our (and most or all of
                             our subsidiaries') ability to:

                             - incur additional debt or enter into sale and
                               leaseback transactions;

                             - pay dividends or distributions on our capital
                               stock or repurchase our capital stock;

                             - issue stock of subsidiaries;

                             - make certain investments;

                             - create liens on our assets to secure debt;

                             - enter into transactions with affiliates;

                             - merge or consolidate with another company; and

                             - transfer and sell assets.

                             These covenants are subject to a number of
                             important limitations and exceptions.

Use of proceeds............  We will not receive any proceeds from the exchange
                             offer. See "Use of Proceeds." We have agreed to
                             bear the expenses of the exchange offer. No
                             underwriter has been retained to carry out the
                             exchange offer.

     For additional information regarding the new notes, see "Description of the
New Notes."

                                        6
<PAGE>   12

     SUMMARY HISTORICAL AND UNAUDITED PRO FORMA CONSOLIDATED FINANCIAL DATA

     RailWorks acquired the Founding Companies concurrently with the
consummation of the IPO on August 4, 1998. For accounting and financial
statement purposes, Comstock Holdings, Inc. (one of the Founding Companies) was
identified as the "accounting acquirer" consistent with the requirements of
Staff Accounting Bulletin ("SAB") No. 97 of the SEC. All other acquisitions have
been accounted for as purchases in accordance with Accounting Principles Board
("APB") No. 16.

     The summary unaudited pro forma consolidated financial data presented below
are derived from unaudited pro forma consolidated financial data contained
elsewhere in this prospectus. This pro forma information is not necessarily
indicative of (1) the results that would have occurred had our acquisitions been
completed on the dates indicated or (2) our actual or future results or
financial position. The information presented below should be read together with
the Unaudited Pro Forma Consolidated Financial Statements and related notes, our
Consolidated Financial Statements and related notes and the Management's
Discussion and Analysis of Financial Condition and Results of Operations
contained elsewhere in this prospectus.

<TABLE>
<CAPTION>
                              YEAR ENDED DECEMBER 31, 1998               SIX MONTHS ENDED JUNE 30, 1999
                        -----------------------------------------   -----------------------------------------
                                                     PRO FORMA                                   PRO FORMA
                        ACTUAL(1)   PRO FORMA(2)   AS ADJUSTED(3)   ACTUAL(4)   PRO FORMA(5)   AS ADJUSTED(6)
                        ---------   ------------   --------------   ---------   ------------   --------------
                                                       (DOLLARS IN THOUSANDS)
<S>                     <C>         <C>            <C>              <C>         <C>            <C>
STATEMENT OF
OPERATIONS DATA:
Revenue...............  $212,533      $488,584        $488,584      $188,483      $239,406        $239,406
Cost of revenue.......   182,817       403,400         403,400       152,072       192,337         192,337
                        --------      --------        --------      --------      --------        --------
Gross profit..........    29,716        85,184          85,184        36,411        47,069          47,069
Selling, general and
  administrative
  expenses............    17,040        32,009          32,009        19,207        21,293          21,293
Non-recurring
  expenses............    19,965(7)         --              --            --            --              --
Transaction fees......     1,281(8)         --              --            --            --              --
Depreciation and
  amortization........     2,105        16,428          16,428         2,570         9,251           9,251
                        --------      --------        --------      --------      --------        --------
Operating (loss)
  income..............   (10,675)       36,747          36,747        14,634        16,525          16,525
Interest expense......     2,334         6,225          22,647         6,458         7,715          10,643
Interest and other
  income..............     1,634         3,492           3,492         1,061         1,645           1,645
                        --------      --------        --------      --------      --------        --------
(Loss) income before
  income taxes........   (11,375)       34,014          17,592         9,237        10,455           7,527
Net (loss) income.....   (12,847)       19,154           8,995         5,771         5,496           3,666
OTHER DATA:
EBITDA(9).............                                $ 53,175                                    $ 25,775
EBITDA margin(10).....                                    10.9%                                       10.7%
Capital expenditures..                                  10,260                                       5,242
Ratio of earnings to
  fixed charges(11)...                                     1.8x                                        1.7x
</TABLE>

                                                   (footnotes on following page)
                                        7
<PAGE>   13

<TABLE>
<CAPTION>
                                                                  AS OF JUNE 30, 1999
                                                      -------------------------------------------
                                                                                     PRO FORMA
                                                      ACTUAL(4)   PRO FORMA(12)   AS ADJUSTED(13)
                                                      ---------   -------------   ---------------
                                                                (DOLLARS IN THOUSANDS)
<S>                                                   <C>         <C>             <C>
BALANCE SHEET DATA:
Cash................................................  $  3,849      $  3,861         $  3,861
Total assets........................................   442,618       455,596          457,708
Total debt..........................................   220,616       232,521          234,633
Stockholders' equity................................   117,863       117,863          117,863
</TABLE>

- ---------------

 (1) The summary historical consolidated financial data as of and for the fiscal
     year ended December 31, 1998 are derived from our Consolidated Financial
     Statements, which are comprised of financial data of:
     - Comstock Holdings, Inc., the accounting acquirer, for the year ended
       December 31, 1998;
     - the Founding Companies, other than Comstock Holdings, Inc., for the
       period from August 1, 1998 through December 31, 1998; and
     - the 1998 Acquired Companies for the period from November 4, 1998 through
       December 31, 1998.
 (2) Reflects the acquisitions of the Founding Companies and the Acquired
     Companies as if they each had occurred on January 1, 1998.
 (3) Reflects the acquisitions of the Founding Companies and the Acquired
     Companies as adjusted to give effect to the sale of the old notes and the
     application of the net proceeds as if they each had occurred on January 1,
     1998.
 (4) The summary historical consolidated financial data as of and for the six
     months ended June 30, 1999 are derived from our unaudited Consolidated
     Financial Statements contained elsewhere in this prospectus. In our
     opinion, such unaudited statements include all adjustments (consisting of
     only normal recurring accruals) necessary for a fair presentation of our
     financial position and results of operations for such period. Our results
     of operations for the six months ended June 30, 1999 are not necessarily
     indicative of the results that may be expected for the full year.
 (5) Reflects the acquisitions of the 1999 Acquired Companies as if they each
     had occurred on January 1, 1999.
 (6) Reflects the acquisitions of the 1999 Acquired Companies as adjusted to
     give effect to the sale of the old notes and the application of the net
     proceeds as if they each had occurred on January 1, 1999.
 (7) Consists of $14.5 million in restricted common stock granted to the
     Company's officers, $2.9 million related to settlement of employee benefit
     obligations of one of the operating companies and corporate relocation
     costs, $2.2 million in estimated legal and settlement costs in connection
     with former operations of one of the operating companies and $400,000 in
     transfers of common stock made by certain operating company managers to
     other employees of such operating companies.
 (8) Represents offering expenses incurred in connection with the initial public
     offering of common stock of RailWorks.
 (9) EBITDA is the sum of earnings before interest, income taxes, depreciation
     and amortization expense. Included in EBITDA is income earned on contract
     retainages pursuant to contractual agreements with certain customers.
     EBITDA is presented because we believe that it is a widely accepted
     financial indicator of a company's ability to service indebtedness.
     However, EBITDA does not represent net income or cash flow from operations
     as defined by generally accepted accounting principles, is not necessarily
     indicative of cash available to fund all cash flow needs, should not be
     considered as an alternative to net income or to cash flows from operating
     activities (as determined in accordance with generally accepted accounting
     principles) and should not be construed as an indication of a company's

                                        8
<PAGE>   14

    operating performance or as a measure of liquidity. EBITDA is not
    necessarily comparable with similarly titled measures presented by other
    companies.
(10) Represents EBITDA as a percentage of revenue.
(11) The ratio of earnings to fixed charges is calculated by dividing the fixed
     charges into net income before taxes and minority interests plus fixed
     charges. Fixed charges consist of interest expense, amortization of
     deferred debt issuance costs and the estimated interest component of rent
     expense.
(12) Reflects the acquisitions of the 1999 Acquired Companies as if they each
     had occurred on June 30, 1999.
(13) Reflects the acquisitions of the 1999 Acquired Companies as adjusted to
     give effect to this offering and the application of the net proceeds as if
     they each had occurred on June 30, 1999. Excludes estimated issuance cost
     and discounts of $2.1 million.

          UNAUDITED PRO FORMA FINANCIAL DATA OF THE FOUNDING COMPANIES
                        AND THE 1998 ACQUIRED COMPANIES

     The pro forma financial data set forth below reflect the results of
operations of the Founding Companies as if we had acquired them on January 1,
1997. The presentation only includes the results of the 1998 Acquired Companies
from November 4, 1998 to December 31, 1998. Acquired Companies are otherwise
excluded. This pro forma information is not necessarily indicative of (1) the
results that would have occurred had we acquired the Founding Companies on
January 1, 1997 or (2) our actual or future results of operations or financial
position.

<TABLE>
<CAPTION>
                                                                    YEAR ENDED
                                                                   DECEMBER 31,
                                                              -----------------------
                                                               1997(1)      1998(2)
                                                              ----------   ----------
                                                              (DOLLARS IN THOUSANDS)
<S>                                                           <C>          <C>
Revenue.....................................................   $256,508     $269,498
Cost of revenue.............................................    219,400      227,052
                                                               --------     --------
Gross profit................................................     37,108       42,446
Selling, general and administrative expenses................     20,848       19,317
Depreciation and amortization...............................      5,038        5,389
                                                               --------     --------
Operating income............................................     11,222       17,740
Interest and other income (expenses), net...................     (1,063)        (833)
                                                               --------     --------
Income before income taxes..................................     10,159       16,907
Net income..................................................      5,438        8,812
</TABLE>

- ---------------

(1) Includes the 14 Founding Companies.
(2) Includes the 14 Founding Companies for all of 1998 and the two 1998 Acquired
    Companies from November 4, 1998, their date of acquisition.

                                        9
<PAGE>   15

                                  RISK FACTORS

     You should carefully consider the information below as well as to all other
information provided to you in this prospectus before deciding whether to tender
your old notes in exchange for new notes pursuant to the exchange offer. These
risks apply to both the old notes and the new notes.

RISKS RELATING TO THE NEW NOTES

     There Could Be Adverse Consequences of Failure to Exchange Your Old Notes
for New Notes. The old notes were not registered under the Securities Act or
under the securities laws of any state and may not be resold, offered for resale
or otherwise transferred unless they are subsequently registered or resold
pursuant to an exemption from the registration requirements of the Securities
Act and applicable state securities laws. If you do not exchange your old notes
for new notes pursuant to the exchange offer, you will not be able to resell,
offer to resell or otherwise transfer the old notes unless they are registered
under the Securities Act or unless you resell them, offer to resell or otherwise
transfer them under an exemption from the registration requirements of, or in a
transaction not subject to, the Securities Act. In addition, we will no longer
be under an obligation to register the old notes under the Securities Act except
in the limited circumstances provided under the registration rights agreement.
In addition, to the extent that old notes are tendered for exchange and accepted
in the exchange offer, the trading market for the untendered and tendered but
unaccepted old notes could be adversely affected. Please refer to the section
captioned "Risk Factors -- No Assurance of Active Trading Market for the Notes."

     We Have Substantial Leverage. Our substantial indebtedness could adversely
affect our financial health and could prevent us from fulfilling our obligations
under the notes. We have a substantial amount of debt outstanding. On a pro
forma basis, as of June 30, 1999, we would have had outstanding total debt of
$234.6 million (excluding approximately $85.6 million that we expect to have
available to borrow under our credit facility), ratio of earnings to fixed
charges of 1.7x and stockholders' equity of $117.9 million.

     We May Make Additional Borrowings.  Despite current indebtedness levels, we
and our subsidiaries will also be permitted to incur substantial additional debt
in the future. On a pro forma basis as of June 30, 1999 and giving effect to the
increase in our credit facility in August 1999, $85.6 million would have been
available for additional borrowing under our credit facility (subject to
customary borrowing conditions). If new debt is added to our and our
subsidiaries' current debt levels, the related risks that we and they now face
could intensify. Please refer to the sections of this prospectus entitled
"Capitalization", "Selected Historical Consolidated Financial Data", and
"Description of the Notes -- Certain Covenants -- Limitation on Incurrence of
Additional Indebtedness".

     Our substantial amount of debt could have important consequences for you.
For example, it could:

     - make it more difficult for us to satisfy our obligations with respect to
       the notes;

     - limit our ability to obtain additional financing, if we need it, for
       working capital, capital expenditures, acquisitions, debt service
       requirements or other purposes;

     - increase our vulnerability to adverse economic and industry conditions;

     - require us to dedicate a substantial portion of our cash flow from
       operations to payments on our debt, thereby reducing funds available for
       operations, future business opportunities or other purposes;

     - limit our flexibility in planning for, or reacting to, changes in our
       business and the industry in which we compete; and
                                       10
<PAGE>   16

     - place us at a competitive disadvantage compared to our competitors that
       have less debt.

     We May be Unable to Service Debt.  To service our indebtedness, we will
require a significant amount of cash. Our ability to make payments on our debt,
including the notes and the existing notes, and to fund planned capital
expenditures and acquisitions will depend on our future operating performance
and on our ability to successfully implement our business strategy. Prevailing
general economic conditions and financial, business, regulatory and other
factors, many of which are beyond our control, will affect our ability to make
these payments. Based on our current level of operations, we believe that our
cash flow from operations, available cash and available borrowings under our
credit facility will be adequate to meet our liquidity needs for the foreseeable
future.

     We cannot assure you, however, that we will realize anticipated financial
results or be successful in implementing our business strategy. If future cash
flow is not sufficient to make scheduled payments on our debt, including the
notes and the existing notes, we will need to refinance all or a portion of our
debt, including the notes and the existing notes, before maturity, obtain
additional financing, delay planned acquisitions and capital expenditures, or
sell assets. We cannot assure you that we will be able to refinance any of our
debt, including debt outstanding under our credit facility and the notes, on
commercially reasonable terms. We also cannot assure you that we would be able
to make an asset sale on a timely basis for proceeds sufficient to cover our
debt service requirements. The terms of our credit facility and the indenture
governing the notes and the existing notes restrict our ability to sell assets.

     If for any reason we are unable to meet our debt service obligations, we
would be in default under the terms of our credit facility. If such a default
were to occur, the lenders under our credit facility could elect to declare all
of our debt under the facility immediately due and payable, including accrued
and unpaid interest, and the lenders would not be obligated to continue to
advance funds under the facility. If the amounts outstanding under the credit
facility are accelerated, we cannot assure you that our assets will be
sufficient to repay in full the money owed to the banks or to our other debt
holders.

     The Notes Rank Behind Other Indebtedness.  The notes and the guarantees
rank behind all of our and the guarantors' existing and future senior debt,
including debt under our credit facility and rank equally in right of payment
with the existing notes. On a pro forma basis, as of June 30, 1999, we and the
guarantors would have had $19.4 million of senior debt outstanding. This amount
does not include approximately $85.6 million that we expect to have available to
borrow under our credit facility, all of which would be senior debt. In the
event of our or any of the guarantors' bankruptcy, liquidation or
reorganization, our and the guarantors' assets will be available to pay our
obligations on the notes only after we have repaid all of our and the
guarantors' senior debt in full. We cannot assure you that sufficient assets
will remain to make full payment on the notes after such payments are made.

     In the event of bankruptcy, liquidation or reorganization or any similar
proceeding relating to the Company or the guarantors, holders of the notes and
the existing notes will participate with trade creditors and all other holders
of our and the guarantors' subordinated indebtedness in the assets remaining
after we and such guarantors have repaid in full all of our senior debt. In
addition, the subordination provisions of the indenture provide that we cannot
make cash payments on the notes and the existing notes while a payment default
is continuing under certain of our senior debt.

     Our Credit Facility and the Indenture Impose Certain Restrictions. Our
credit facility and the indenture governing the notes and the existing notes
contain a number of significant covenants that, among other things, restrict our
ability to dispose of assets, incur additional indebtedness, repay other
indebtedness, pay dividends, make certain investments or acquisitions,
repurchase or redeem capital stock, engage in mergers or consolidations, or
engage in certain transactions with subsidiaries and affiliates and otherwise
restrict corporate activities. We cannot
                                       11
<PAGE>   17

assure you that such restrictions will not adversely affect our ability to
finance future operations or capital needs or engage in other business
activities that may be in our best interest.

     In addition, our credit facility requires us to maintain compliance with
financial ratios. Our ability to comply with these ratios may be affected by
events beyond our control. We have granted the lenders under the credit facility
a first lien on all of the capital stock of our subsidiaries and on all accounts
receivable of us and our subsidiaries. In the event of a default under the
credit facility, the lenders under the credit facility could foreclose upon the
assets pledged to them and the holders of the notes might not be able to receive
any payments until any payment default was cured or waived, any acceleration was
rescinded, or the indebtedness outstanding under our credit facility was repaid.
See "Description of Credit Facility".

     A breach of any of the covenants contained in our credit facility or our
inability to comply with the required financial ratios could result in an event
of default, which would allow the lenders under the credit facility to declare
all borrowings outstanding to be due and payable. In addition, our lenders could
compel us to apply all of our available cash to repay our borrowings or they
could prevent us from making debt service payments on the notes and the existing
notes. If the amounts outstanding under the credit facility or the notes were to
be accelerated, we cannot assure you that our assets would be sufficient to
repay in full the money owed to the banks or to our other debt holders,
including you as a noteholder.

     Fraudulent Conveyance Laws Permit Courts to Void Notes in Specific
Circumstances. Federal and state statutes allow courts, under specific
circumstances, to void the notes and the guarantees and require noteholders to
return payments received from RailWorks or the guarantors in the event of the
bankruptcy or other financial difficulty of RailWorks or any of the guarantors.
Under the federal bankruptcy law and comparable provisions of state fraudulent
transfer laws, a guarantee of the notes could be voided, or claims in respect of
a guarantee could be subordinated to all other indebtedness of any subsidiary
that is the guarantor if, among other things, at the time the guarantor incurred
the debt evidenced by its guarantee, the guarantor:

     - received less than reasonably equivalent value or fair consideration for
       the incurrence of such guarantee;

     - was insolvent or was rendered insolvent by reason of such incurrence;

     - was engaged in a business or transaction for which the guarantor's
       remaining assets constituted unreasonably small capital; or

     - intended to incur, or believed (or reasonably should have believed) that
       it would incur, debts beyond its ability to pay such debts as they
       mature.

     In addition, any payment by that guarantor pursuant to its guarantee could
be voided and required to be returned to the guarantor, or to a fund for the
benefit of the creditors of the guarantor.

     The measure of insolvency for purposes of these fraudulent transfer laws
will vary depending upon the law applied in any proceeding to determine whether
a fraudulent transfer has occurred. Generally, however, a guarantor of the notes
would be considered insolvent if:

     - the sum of its debts, including contingent liabilities, were greater than
       the fair saleable value of all of its assets;

     - if the present fair saleable value of its assets were less than the
       amount that would be required to pay its probable liability on its
       existing debts, including contingent liabilities, as they become absolute
       and matured; or

     - it could not pay its debts as they become due.

                                       12
<PAGE>   18

     A court is likely to find that a guarantor of the notes did not receive
fair consideration or reasonably equivalent value for its guarantee to the
extent that its liability under the guarantee is greater than the direct benefit
it received from the issuance of notes. By its terms, each guarantee of the
notes will limit the liability of the guarantor to the maximum amount that it
can pay without the guarantee being deemed a fraudulent transfer. A court may
not give effect to this limitation on liability. In that event, a court may find
that the issuance of the guarantee rendered the subsidiary guarantor insolvent.
If a court voids the guarantee or holds it unenforceable, you will cease to have
a claim against the subsidiary guarantor and will be a creditor solely of
RailWorks. If the limitation on liability is effective, the amount that the
guarantor is found to have guaranteed might be so low that there will not be
sufficient funds to pay the notes in full.

     On the basis of historical financial information, recent operating results
and other factors, RailWorks and each guarantor believes that, after giving
effect to the indebtedness incurred in connection with this offering and the
credit facility, it will not be insolvent, will not have unreasonably small
capital for the business in which it operates and will not have incurred debts
beyond its ability to pay such debts as they mature. We cannot assure you,
however, as to what standard a court would apply in making such determinations
or that a court would agree with our or the guarantors' conclusions in this
regard.

     We May be Unable to Finance a Change of Control Offer.  Upon the occurrence
of specific kinds of change of control events, we must offer to repurchase all
outstanding notes and all existing notes. However, it is possible that we will
not have sufficient funds at the time of the change of control to make the
required repurchase of notes and existing notes or that restrictions in our
credit facility will not allow such repurchases. In addition, certain important
corporate events, such as leveraged recapitalizations that would increase the
level of our indebtedness, would not constitute a "Change of Control" under the
indenture and in such a circumstance, we would not have to make an offer to
repurchase the notes and the existing notes. See "Description of the Notes --
Redemption."

     There is No Public Market for the New Notes.  The new notes are new
securities for which there is currently no trading market. We do not intend to
list the new notes on any securities exchange. Although we expect the new notes
to be eligible for trading in the PORTAL market, we cannot assure you that an
active trading market for the new notes will develop.

     The liquidity of any market for the notes will depend upon various factors,
including:

     - the number of holders of the notes;

     - the interest of securities dealers in making a market for the notes;

     - the overall market for high-yield securities;

     - our financial performance and prospects; and

     - the prospects for companies in our industry generally.

     Historically, the market for non-investment grade debt has been subject to
disruptions that have caused substantial volatility in the prices of securities
similar to the new notes. We cannot assure you that the market for the new
notes, if any, will not be subject to similar disruptions. Any such disruptions
may adversely affect you as a holder of the new notes.

     In addition, to the extent that old notes are surrendered and accepted in
the exchange offer, the trading market for unsurrendered old notes and for
surrendered-but-unaccepted old notes could be adversely affected due to the
limited amount of old notes that are expected to remain outstanding following
the exchange offer. Generally, when there are fewer outstanding securities of a
given issue, there is less demand to purchase such security, which results in a
lower price for such security. Conversely, if many old notes are not
surrendered, or are surrendered-but-unaccepted, the trading market for the new
notes could be adversely affected. See "Plan of

                                       13
<PAGE>   19

Distribution" and "The Exchange Offer" for further information regarding the
distribution of the new notes and the consequences of failure to participate in
the exchange offer.

RISKS RELATING TO RAILWORKS

     The Operating Companies Do Not Have a Combined Operating History; We May be
Unsuccessful Integrating Their Decentralized Operations.  RailWorks was founded
in March 1998 but conducted no operations and generated no revenue until we
completed our initial public offering, or "IPO", of our common stock in August
1998. We acquired the Founding Companies concurrently with the completion of our
IPO, have acquired 13 additional operating companies since that time, and have
entered into letters of intent to acquire six additional operating companies.
Our operating companies were separate independent entities before we acquired
them and to a certain extent they continue to operate as independent entities
because we conduct our operations on a decentralized basis. The integration of
our operating companies, while allowing them to retain decentralized operations
and management, is important to our operating and growth strategies and the
achievement of efficiencies in the combined operation. We may not be able to
integrate the operations or the necessary systems and procedures, including
accounting and financial reporting systems and project management systems, to
manage effectively the combined enterprise. Some members of our management group
have only recently joined RailWorks and we cannot guarantee that the management
group will successfully implement our acquisition and operating strategies. We
cannot assure you that we will be able to establish, maintain or increase the
profitability of the operating companies. Our pro forma financial statements
include results of operations for certain operating companies when they were not
under common control or management. As a result, our pro forma financial
statements may not be indicative of our future results of operations. Any
failure by our management group to implement our strategies, integrate the
operating companies without substantial costs, delays or other operational or
financial difficulties, or oversee effectively the combined entity could have a
material adverse effect on our business, financial condition and results of
operations.

     We May be Unable to Complete and Finance Acquisitions.  We have completed
13 acquisitions since the IPO and we intend to grow significantly through the
acquisition of additional businesses. See "Business -- Strategy." Our
acquisition strategy entails reviewing acquired business operations, corporate
infrastructure and systems and financial controls. Unforeseen expenses,
difficulties, complications and delays frequently encountered in connection with
the rapid expansion of operations could inhibit our growth or adversely affect
our financial performance.

     We have also signed letters of intent to purchase six operating companies.
We expect to execute definitive purchase agreements with one exception, which
will have customary closing conditions (including completion of due diligence),
prior to the end of 1999. However, there can be no assurance that we will
acquire either of these companies.

     We cannot assure you that we will maintain or accelerate our growth or
anticipate all of the changing demands that expanding operations will impose on
our management, personnel, operational and management information systems and
financial systems. We may not be able to identify, acquire or manage profitably
additional businesses or to integrate successfully any acquired businesses
without substantial costs, delays or other operational or financial
difficulties. Any such occurrence could have a material adverse effect on our
business, financial condition and results of operations.

     We cannot predict the timing, size and success of our acquisition efforts
and any associated capital commitments. We currently intend to finance future
acquisitions by bank borrowings, shares of our common stock, internally
generated funds or a combination of common stock and cash. If our common stock
does not maintain a sufficient market value, or if potential acquisition
candidates are otherwise unwilling to accept common stock as part of the
consideration for the

                                       14
<PAGE>   20

sale of their businesses, we may be required to utilize more of our cash
resources or borrowings to maintain our acquisition program. In addition, our
acquisitions typically provide for the sellers to receive contingent
consideration, which is only paid if the acquired companies achieve certain
operating results. These payments could be substantial. See "Management's
Discussion and Analysis of Financial Condition and Results of
Operation -- Liquidity and Capital Resources".

     We May be Unable to Generate Internal Growth.  Our ability to grow will be
affected by various factors, including demand for rail system services and
products, our success in bidding on new projects, the success of our
cross-selling efforts and our ability to develop a national accounts program.
Our growth may also depend on increased outsourcing by rail system operators.
Many of these factors are beyond our control. Our strategies may not be
successful or we may be unable to generate cash flow adequate for combined
operations and to support internal growth. The senior managers of the operating
companies retain responsibility for day-to-day operations. If proper business
controls are not implemented and maintained, this decentralized operating
strategy could result in inconsistent operating and financial practices of the
operating companies, which could have a material adverse effect on our business,
financial condition and results of operations. See "Business -- Strategy".

     We Have Been Dependent on Certain Customers.  We derived approximately
31.3% of our pro forma revenue for the year ended December 31, 1998 from our top
ten customers. Approximately 17.2% of our 1998 pro forma revenue was derived
from projects undertaken for the New York City Transit Authority ("NYCTA").
These projects were undertaken under a number of separate contracts. If the
NYCTA were to significantly reduce the amount of business that it does with us
or determine not to do business with us in the future, it would have a material
adverse effect on our business, financial condition and results of operations.
See "Business -- Customers".

     Certain Operating Companies Have a History of Losses.  From time to time,
primarily due to industry cyclicality and uncertainties inherent in the
competitive bidding process, certain of our operating companies have experienced
net losses. See "-- Our Fixed Price Contracts Expose us to Significant Risks"
below. We cannot assure you that we or our operating companies will be
profitable in the future. See "Management's Discussion and Analysis of Financial
Condition and Results of Operations".

     We May Face Intense Competition.  The rail system services and products
industry is highly competitive. Numerous companies provide services to transit
authorities, construct and repair rail systems or sell related products or
supplies, and some of these companies operate in more than one of these lines of
business. Some of our competitors have greater resources than we have, may also
provide a broad range of services and products and may have sufficient bonding
capacity and other resources to undertake large projects. Any inability to
compete successfully against our existing and future competitors would have a
material adverse effect on our business, financial condition and results of
operations. Certain of our operating companies also provide electrical
contracting services to non-rail industrial and commercial customers. While we
believe that we currently compete effectively in the non-rail electrical
contracting business, this industry is highly competitive and is served by
small, owner-operated private companies, public companies and several large
regional companies. Additionally, we could face competition in the future from
other competitors entering our markets. See "Business -- Competition".

     We are Dependent on Public Sector Contracts and Funding.  The rail system
services and products business involves contracts that are supported by funding
from federal, state and local governmental agencies, as well as contracts with
such agencies ("public sector contracts"). Public sector contracts are subject
to detailed regulatory requirements and public policies, as well as funding
priorities. These contracts may be conditioned upon the continuing availability
of public funds, which in turn depends upon lengthy and complex budgetary
procedures. These contracts may also be subject to significant pricing
constraints. Moreover, public sector contracts

                                       15
<PAGE>   21

may generally be terminated for reasons beyond the control of the contractor,
including when such termination is in the best interests of the governmental
agency. We cannot assure you that these factors or others unique to public
sector contracts will not have a material adverse effect on our business,
financial condition and results of operations. See "Business -- Government
Regulation".

     Our Fixed Price Contracts Expose us to Significant Risks.  Fixed price
contracts are typically awarded in the rail system services industry pursuant to
a competitive bidding process. In compiling our bid on a particular project, we
must estimate the time it will take to complete the project, along with the
project's labor and supply costs. These costs may be affected by a variety of
factors, some of which may be beyond our control. If we cannot accurately
predict the costs of fixed price contracts, certain projects could have lower
margins than anticipated or we could suffer losses on the projects. Lower
margins and losses could have a material adverse effect on our business,
financial condition and results of operations.

     We Rely on Subcontractors and Suppliers.  We generally perform electrical
contracting services for transit signaling and communication systems as a
subcontractor to companies that design the systems and manufacture or purchase
the necessary equipment. In other instances, we act as the prime contractor and
subcontract the design of the signal or communication system and necessary
equipment. When we are a prime contractor for such projects, we generally
require subcontractors to post performance bonds. We may not require a
subcontractor to post a performance bond in situations where (1) the
subcontractor has strong experience with a specific type of project and
demonstrates financial stability and (2) the customer does not require bonds
from us as prime contractor. We sometimes depend upon the subcontractor to
perform design and other services and provide equipment. For certain projects
there are a limited number of companies that can perform the subcontract if the
initial subcontractor defaults. As a result, we depend upon our subcontractors
to perform under the subcontracts. Further, the major components of signaling
and communication systems for transit authorities are manufactured to
specifications and require long lead times for production. If a subcontractor or
supplier defaults, or if a supplier refuses or cannot do business with us, it
could have a material adverse effect on our business, financial condition and
results of operations.

     The Rail System Industry is Cyclical.  A substantial portion of our revenue
is derived from public contracts, which we expect to constitute a relatively
stable source of business due to funding provided by TEA 21. However, demand for
rail system services and products could fluctuate in conjunction with overall
economic conditions. In economic downturns, rail system operators may defer
certain construction and rehabilitation projects and purchases of related
products to conserve cash in the short term. Reductions in freight traffic due
to economic downturns or other factors may also reduce demand for our
construction and rehabilitation services and related products. In economic
upturns, railroads, particularly Class I railroads, experience heavier traffic
demands that can cause problems associated with congestion. The operational
problems related to congestion have an unpredictable impact on railroad
expenditures for construction and rehabilitation services and related products,
including those we provide. During periods of peak usage, rail system owners may
defer certain expenditures because they may need to address operational
challenges these conditions cause. Other issues, such as the possibility of
heightened government regulation during periods of congestion and the internal
challenges of managing railroad operations as the Class I railroads continue to
consolidate, may exacerbate the effects of these uncertainties.

     We are Exposed to Downturns in Commercial Construction.  We derived
approximately 11.6% of our pro forma revenue for the year ended December 31,
1998 from installation of electrical systems in newly constructed or renovated
commercial buildings and power and industrial plants. Fluctuations in the level
of new construction and renovation of commercial buildings affect the demand for
electrical installation services. These fluctuations reflect the cyclical nature
of the construction industry and depend upon general economic conditions,
                                       16
<PAGE>   22

changes in interest rates and other related factors. Downturns in levels of
commercial construction and renovation could have a material adverse effect on
our business, financial condition and results of operations. Further, our
electrical installation business is focused in the northeastern United States
and is therefore particularly susceptible to economic downturns in that region.
See "Management's Discussion and Analysis of Financial Condition and Results of
Operations".

     Our Workforce is Unionized.  As of June 30, 1999, approximately 49.4% of
our employees were covered under collective bargaining agreements. In June 1994,
one of our operating companies was affected by a one-week work stoppage by the
United Brotherhood of Teamsters. We cannot assure you that future work stoppages
will not affect us. In addition, labor agreements are generally negotiated on an
industry-wide basis and the terms and conditions of future labor agreements
could be beyond our control. We may be subject to terms and conditions in future
labor agreements that could have a material adverse effect on our business,
financial condition and results of operations. See "Business -- Employees".

     We are Subject to Extensive Environmental and Government Regulation.  Our
operations are subject to extensive federal, state and local regulation under
environmental laws and regulations. Among other things, these laws and
regulations cover emissions to the air, discharges to waters and the generation,
handling, storage, transportation, treatment and disposal of waste, underground
and aboveground storage tanks and remediation of soil and groundwater
contamination. Environmental liability can extend to previously owned or
operated properties, leased properties and properties owned by third parties, as
well as to properties currently owned and used by us. Environmental liabilities
may also arise from claims asserted by adjacent landowners or other third
parties in toxic tort litigation. We could incur significant ongoing costs
associated with environmental regulatory compliance. Further, we sometimes use
hazardous materials in connection with our operations. Although we believe that
we are in material compliance with all of the various environmental regulations
applicable to our business, we cannot assure you that requirements will not
change in the future or that we will not incur significant costs to comply with
such requirements.

     In addition to safety, health and other regulations of general
applicability, our operations may be significantly affected by regulations of
the Surface Transportation Board, the Federal Railroad Administration, the
Occupational Safety and Health Administration, state departments of
transportation and other state and local regulatory agencies. Changes in
regulation of the rail and transit industries through legislative,
administrative, judicial or other action could have a material adverse effect on
our business, financial condition and results of operations. See "Business --
Government Regulation."

     We are Dependent on Key Personnel.  Our success depends to a significant
extent upon the efforts and abilities of John G. Larkin, Chairman of the Board
and Chief Executive Officer, and Michael R. Azarela, Executive Vice President
and Chief Financial Officer. We also rely on senior management of our operating
companies. While we have entered into employment agreements with Messrs. Larkin
and Azarela and certain senior managers of the operating companies, we cannot be
certain that such individuals will remain with us throughout the terms of their
agreements, or thereafter. Further, we likely will depend on the senior
management of any significant businesses we acquire in the future. The loss of
the services of one or more of these key employees before we are able to attract
and retain qualified replacement personnel could have a material adverse effect
on our business, financial condition and results of operation. See "Management."

     Our Systems May Not be Year 2000 Compliant.  We have identified potential
deficiencies related to the Year 2000 in our information systems, and we have
substantially completed remediation and upgrading of these systems. With respect
to other equipment with date-sensitive operating controls, such as manufacturing
equipment, HVAC, security and other similar systems,

                                       17
<PAGE>   23

we are in the process of identifying those items which may require remediation
or replacement. We expect to complete remediation or replacement and testing of
these in the fall of 1999. We are in the process of identifying and contacting
suppliers, both inventory and non-inventory, and customers to determine the
state of their Year 2000 readiness.

     Based upon our current estimates, incremental out-of-pocket costs of our
Year 2000 program are expected to not exceed $50,000. As of June 30, 1999,
approximately $25,000 of these funds had been spent. These costs include
third-party consultants, remediation of existing computer software and
replacement and remediation of embedded chips. These costs do not include
internal management time and the deferral of other projects, the effects of
which are not expected to be material to our results of operations or financial
condition.

     At this stage of the process, we believe that it is difficult to
specifically identify the most reasonably likely worst case Year 2000 scenario.
As with all service providers and manufacturers, a reasonably likely worst case
scenario would be the result of failures of third parties (including, without
limitation, governmental entities and entities with which we have no direct
involvement) that continue for more than several days in various geographic
areas where we provide services, manufacture our products or from which we
source our materials and components. In connection with our manufacturing and
supply of raw materials and components, we are considering various contingency
plans. Any such plans would necessarily be limited to matters which we can
reasonably control.

     Our Year 2000 efforts are ongoing and our overall plan, as well as the
consideration of contingency plans, will continue to evolve as new information
becomes available. While we anticipate continuity of our business activities,
that continuity will be dependent upon our ability, and the ability of third
parties upon whom we rely directly or indirectly, to be Year 2000 compliant. You
are cautioned that you should read forward-looking statements regarding Year
2000 issues in conjunction with "Disclosure Regarding Forward-Looking
Statements".

                                USE OF PROCEEDS

     This exchange offer is intended to satisfy our obligations under our
registration rights agreement. We will not receive any proceeds from the
exchange offer. You will receive, in exchange for old notes tendered by you in
the exchange offer, new notes in like principal amount. The old notes
surrendered in exchange for the new notes will be retired and cancelled and
cannot be reissued. Accordingly, the issuance of the new notes will not result
in any increase of our outstanding debt.

                                       18
<PAGE>   24

                                 CAPITALIZATION

     The following table sets forth the capitalization of the Company as of June
30, 1999 (1) on an actual basis, (2) on a pro forma basis to reflect the
acquisition of the 1999 Acquired Companies and (3) on a pro forma basis as
adjusted to reflect this offering and the application of the net proceeds
therefrom as set forth under "Use of Proceeds." This table should be read in
conjunction with Pro Forma Financial Statements, "Description of the Notes," and
the Company's Consolidated Financial Statements and the related notes.

<TABLE>
<CAPTION>
                                                                    AS OF JUNE 30, 1999
                                                             ----------------------------------
                                                                                     PRO FORMA
                                                              ACTUAL    PRO FORMA   AS ADJUSTED
                                                             --------   ---------   -----------
                                                                   (DOLLARS IN THOUSANDS)
<S>                                                          <C>        <C>         <C>
Cash and cash equivalents..................................  $  3,849   $  3,861     $  3,861
                                                             ========   ========     ========
Total debt (including current maturities):
  Credit facility(1).......................................  $ 62,300   $ 67,300     $ 19,412
  Other notes payable(2)...................................    19,316     23,221       23,221
  Seller promissory notes(3)...............................    14,000     17,000       17,000
  Outstanding notes(4).....................................   125,000    125,000      125,000
  Notes offered hereby(5)..................................        --         --       50,000
                                                             --------   --------     --------
          Total debt.......................................   220,616    232,521      234,633
                                                             --------   --------     --------
Stockholders' equity.......................................   117,863    117,863      117,863
                                                             --------   --------     --------
          Total capitalization.............................  $338,479   $350,384     $352,496
                                                             ========   ========     ========
</TABLE>

- ---------------

(1) For a description of credit facility, see "Description of Credit Facility".
(2) Represents assumed indebtedness of the Acquired Companies and fixed asset
    notes related to equipment.
(3) Issued to owners of certain of the Acquired Companies in connection with the
    acquisitions. These notes generally bear interest at 5.0% per annum and
    become due between January 2000 and August 2001.
(4) Represents our $125,000,000 11 1/2% Senior Subordinated Notes due 2009 that
    we issued and sold on April 7, 1999. See "Description of the Notes".
(5) Excludes estimated issuance cost and discounts of $2,112,000.

                                       19
<PAGE>   25

                         PRO FORMA FINANCIAL STATEMENTS

     The following unaudited pro forma financial statements for the year ended
December 31, 1998 give effect to (1) the acquisitions by RailWorks of the
Founding Companies and the Acquired Companies as if each had occurred on January
1, 1998 and (2) the sale of the old notes and the application of the net
proceeds. The unaudited pro forma financial statements for the six months ended
June 30, 1999 give effect to (1) the acquisitions of the 1999 Acquired Companies
as if each had occurred on January 1, 1999 and (2) the sale of the old notes and
the application of the net proceeds. The unaudited pro forma balance sheet gives
effect to the acquisition of the 1999 Acquired Companies and the sale of the old
notes and the application of the net proceeds as if each had occurred on June
30, 1999.

     The unaudited pro forma statement of operations for the year ended December
31, 1998 includes the results of operations of RailWorks for the year ended
December 31, 1998 combined with (1) the results of operations for the Founding
Companies (other than Comstock Holdings, Inc.) from January 1, 1998 through July
31, 1998, (2) the results of operations of Armcore Railroad Contractors, Inc.
from January 1, 1998 through November 4, 1998, six of the 1999 Acquired
Companies from January 1, 1998 through December 31, 1998, two of the 1999
Acquired Companies from December 1, 1997 through November 30, 1998 and two of
the 1999 Acquired Companies from April 1, 1998 through March 31, 1999 and (3)
the sale of the old notes and the application of the net proceeds, and give
effect to the pro forma adjustments related to these transactions all as if each
had occurred on January 1, 1998. The unaudited pro forma statement of operations
for the six months ended June 30, 1999 includes the results of operations of
RailWorks for the six months ended June 30, 1999 combined with (1) the results
of operations of FCM Rail, Ltd., F&V Metro Contracting Corp. and affiliates and
Gantrex Group from January 1, 1999 through January 31, 1999, the results of
operations of McCord Treated Wood, Inc. and Birmingham Wood, Inc. from January
1, 1999 through April 12, 1999, the results of operations of M-Track
Enterprises, Inc. from January 1, 1999 through April 30, 1999, the results of
operations of PNR Contractors, Inc. from January 1, 1999 through May 18, 1999,
the results of operations of Neosho Incorporated and affiliates from January 1,
1999 through May 31, 1999 and the results of operations of Earl Campbell
Construction Company, Inc. and Wood Waste Energy, Inc. from January 1, 1999
through June 30, 1999 and (2) the sale of the old notes and the application of
the net proceeds, and give effect to the pro forma adjustments related to these
transactions all as if each had occurred on January 1, 1999.

     We have analyzed the savings that we expect to realize from reductions in
salaries, bonuses and certain benefits to the owners of the Founding Companies
and the Acquired Companies. To the extent the owners of the Founding Companies
and the Acquired Companies have contractually agreed to changes in salaries,
bonuses, benefits and lease payments, these changes have been reflected in the
unaudited pro forma statement of operations.

     Certain pro forma adjustments are based on preliminary estimates, available
information and certain assumptions that management deems appropriate and may be
revised as additional information becomes available. The pro forma financial
data do not purport to represent what our combined financial position or results
of operations would actually have been if such transactions had in fact occurred
on those dates and are not necessarily representative of our combined financial
position or results of operations for any future period. Because the acquired
entities were not under common control or management prior to their acquisition
by RailWorks, historical combined results may not be comparable to, or
indicative of, future performance. The unaudited pro forma combined financial
statements should be read in conjunction with our historical consolidated
financial statements and the related notes included elsewhere in this
prospectus.

                                       20
<PAGE>   26

                             RAILWORKS CORPORATION

                       UNAUDITED PRO FORMA BALANCE SHEET
                              AS OF JUNE 30, 1999
                             (DOLLARS IN THOUSANDS)

<TABLE>
<CAPTION>
                                            ACQUISITION
                               RAILWORKS         OF                                                    PRO FORMA
                              CORPORATION    WOOD WASTE     PRO FORMA                   OFFERING          AS
                              HISTORICAL    ENERGY, INC.   ADJUSTMENTS     PRO FORMA   ADJUSTMENTS     ADJUSTED
                              -----------   ------------   -----------     ---------   -----------     ---------
<S>                           <C>           <C>            <C>             <C>         <C>             <C>
ASSETS
Current Assets:
  Cash......................   $  3,849        $   12       $     --       $  3,861    $    47,888(b)  $   3,861
                                                                                           (47,888)(c)
  Accounts receivables......    120,013         1,085                       121,098                      121,098
  Costs and estimated
    earnings in excess of
    billings on
    uncompleted.............     49,691            59                        49,750                       49,750
    contracts Inventories...     19,096           269                        19,365                       19,365
  Prepaid expenses and other
    current assets..........      6,403           190                         6,593                        6,593
                               --------        ------       --------       --------    -----------     ---------
        Total current
          assets............    199,052         1,615             --        200,667             --       200,667
                               --------        ------       --------       --------    -----------     ---------
Property, plant and
  equipment, net............     60,249         4,349             --         64,598             --        64,598
                               --------        ------       --------       --------    -----------     ---------
Other Assets:
  Goodwill..................    170,130            --          6,906(a)     177,036             --       177,036
  Other.....................     13,187           108             --         13,295             --        13,295
                               --------        ------       --------       --------    -----------     ---------
                               $442,618        $6,072       $  6,906       $455,596    $        --     $ 455,596
                               ========        ======       ========       ========    ===========     =========
LIABILITIES AND
  STOCKHOLDERS' EQUITY
Current Liabilities:
  Current maturities of
    long-term debt..........   $ 10,193        $1,439       $              $ 11,632    $               $  11,632
  Accounts payable and
    accrued liabilities.....     54,020           638                        54,658                       54,658
  Accrued payroll and
    related withholdings....      4,228            --                         4,228                        4,228
  Billings in excess of
    costs and estimated
    earnings on uncompleted
    contracts...............     11,965            --                        11,965                       11,965
  Other current
    liabilities.............     16,550            82                        16,632                       16,632
                               --------        ------       --------       --------    -----------     ---------
        Total current
          liabilities.......     96,956         2,159             --         99,115             --        99,115
                               --------        ------       --------       --------    -----------     ---------
Long-term Liabilities:
  Other liabilities.........      8,828           353                         9,181                        9,181
  Excess of acquired net
    assets over cost, net of
    amortization............      8,548            --                         8,548                        8,548
  Senior subordinated
    notes...................    125,000            --                       125,000         47,888(b)    172,888
  Long-term debt............     85,423         2,466          8,000(a)      95,889        (47,888)(c)    48,001
                               --------        ------       --------       --------    -----------     ---------
        Total long-term
          liabilities
                               --------        ------       --------       --------    -----------     ---------
        Total liabilities...    324,755         4,978          8,000        337,733             --       337,733
                               --------        ------       --------       --------    -----------     ---------
Stockholders' Equity:
  Preferred stock...........         14            --                            14                           14
  Common stock..............        139             3             (3)(a)        139                          139
  Additional paid-in
    capital.................    123,273           208           (208)(a)    123,273                      123,273
  Accumulated other
    comprehensive income....        105            --                           105                          105
  Retained earnings
    (deficit)...............     (5,668)          883           (883)(a)     (5,668)                      (5,668)
                               --------        ------       --------       --------    -----------     ---------
        Total stockholders'
          equity............    117,863         1,094         (1,094)       117,863             --       117,863
                               --------        ------       --------       --------    -----------     ---------
                               $442,618        $6,072       $  6,906       $455,596    $        --     $ 455,596
                               ========        ======       ========       ========    ===========     =========
</TABLE>

                See Notes to Unaudited Pro Forma Balance Sheet.

                                       21
<PAGE>   27

                             RAILWORKS CORPORATION

                   NOTES TO UNAUDITED PRO FORMA BALANCE SHEET

     a. To record goodwill and RailWorks's financing of the 1999 Acquired
Companies.

     b. To record the sale of the old notes, net of estimated issuance cost and
discounts of $2,112,000.

     c. To record repayment of the Credit Facility and other debt with proceeds
from the sale of the old notes.

     The adjustments related to the 1999 Acquired Companies are based on
preliminary estimates of the allocation of the purchase price and are subject to
revision.

                                       22
<PAGE>   28

                             RAILWORKS CORPORATION

                  UNAUDITED PRO FORMA STATEMENT OF OPERATIONS
                      FOR THE YEAR ENDED DECEMBER 31, 1998
                             (DOLLARS IN THOUSANDS)
<TABLE>
<CAPTION>
                                                   FOUNDING
                                                   COMPANIES                    PRO FORMA
                                      RAILWORKS    (THROUGH                        FOR
                                     CORPORATION   JULY 31,     PRO FORMA       FOUNDING      ACQUIRED      PRO FORMA
                                     HISTORICAL      1998)     ADJUSTMENTS      COMPANIES   COMPANIES(1)   ADJUSTMENTS
                                     -----------   ---------   -----------      ---------   ------------   -----------
<S>                                  <C>           <C>         <C>              <C>         <C>            <C>
Revenue............................   $212,533     $ 56,965     $               $269,498      $219,086      $     --
Cost of revenue....................    182,817       45,892         (800)(2)     227,052       180,398        (4,050)(2)
                                                                    (857)(3)
                                      --------     --------     --------        --------      --------      --------
Gross profit.......................     29,716       11,073        1,657          42,446        38,688         4,050
Selling, general and administrative
  expenses.........................     17,040        9,033       (2,379)(3)      19,317        27,642       (10,326)(3)
                                                                    (785)(4)                                    (513)(2)
                                                                  (2,000)(2)                                  (4,111)(5)
                                                                  (1,592)(5)
Non-recurring expenses.............     19,965          400      (14,470)(6)          --            --            --
                                                                    (803)(7)
                                                                  (5,092)(8)
Transaction fees...................      1,281           --       (1,281)(9)          --            --            --
Loss guarantee                                                                        --         1,491        (1,491)(10)
Depreciation and amortization......      2,105        1,595        1,689(11)       5,389         9,197         1,842(11)
                                      --------     --------     --------        --------      --------      --------
Operating income (loss)............    (10,675)          45       28,370          17,740           358        18,649
Other income (expense):
  Interest income/other expense....      1,634          108           --           1,742         1,550           200(13)
  Interest expense.................     (2,334)        (378)         137(13)      (2,575)       (3,829)          179(13)
                                      --------     --------     --------        --------      --------      --------
(Loss) income before income taxes..    (11,375)        (225)      28,507          16,907        (1,921)       19,028
Provision for income taxes.........      1,472          453        6,170(14)       8,095          (491)        7,257(14)
                                      --------     --------     --------        --------      --------      --------
Net (loss) income..................   $(12,847)    $   (678)    $ 22,337        $  8,812      $ (1,430)     $ 11,771
                                      ========     ========     ========        ========      ========      ========

EBITDA(15).........................   $ (8,570)    $  1,640     $ 30,059        $ 23,129      $  9,555      $ 20,491
                                      ========     ========     ========        ========      ========      ========

<CAPTION>
                                     PRO FORMA FOR
                                       FOUNDING
                                       COMPANIES
                                     AND ACQUIRED     OFFERING        PRO FORMA AS
                                       COMPANIES     ADJUSTMENTS        ADJUSTED
                                     -------------   -----------      ------------
<S>                                  <C>             <C>              <C>
Revenue............................    $488,584       $                 $488,584
Cost of revenue....................     403,400                          403,400
                                       --------       --------          --------
Gross profit.......................      85,184                           85,184
Selling, general and administrative
  expenses.........................      32,009                           32,009
Non-recurring expenses.............
Transaction fees...................
Loss guarantee
Depreciation and amortization......      16,428                           16,428
                                       --------       --------          --------
Operating income (loss)............      36,747                           36,747
Other income (expense):
  Interest income/other expense....       3,492                            3,492
  Interest expense.................      (6,225)       (15,725)(12)      (22,647)
                                                          (697)(12)
                                       --------       --------          --------
(Loss) income before income taxes..      34,014        (16,422)           17,592
Provision for income taxes.........      14,861         (6,263)(14)        8,598
                                       --------       --------          --------
Net (loss) income..................    $ 19,153       $(10,159)         $  8,994
                                       ========       ========          ========
EBITDA(15).........................    $ 53,175       $     --          $ 53,175
                                       ========       ========          ========
</TABLE>

           See Notes to Unaudited Pro Forma Statement of Operations.

                                       23
<PAGE>   29

                             RAILWORKS CORPORATION

              NOTES TO UNAUDITED PRO FORMA STATEMENT OF OPERATIONS

     1. Excludes results of operations of the 1998 Acquired Companies from
November 4, 1998 to December 31, 1998 because they are included in the
Consolidated Financial Statements of RailWorks for the year ended December 31,
1998.

     2. To reflect the reduction of insurance and employee benefit costs
realized by RailWorks compared to the combined historical cost incurred by the
Founding Companies and the Acquired Companies.

     3. To reduce compensation expense to the level the owners of the Founding
Companies and the Acquired Companies have contractually agreed to receive
subsequent to the acquisition of their companies. The employment agreements are
generally for three years. This amount is net of incremental corporate expenses
of $1.6 million.

     4. To reflect the savings realized on a lease renewal by Comstock and a
reduction of compensation expense related to personnel of Comstock's former
parent.

     5. To eliminate acquisition-related costs incurred by the Founding
Companies and certain professional and other costs incurred by the Acquired
Companies in anticipation of their acquisition by RailWorks.

     6. To record the issuance of 1,205,872 shares of restricted common stock
(with no cash impact to RailWorks) to management, based on the IPO price of
$12.00 per share.

     7. To eliminate non-cash compensation expense recorded as a result of the
transfer of common stock from certain operating company managers to other
employees of such operating companies at the price per share in effect on the
date of transfer.

     8. To eliminate non-recurring expenses of RailWorks consisting of $2.9
million related to settlement of employee benefit obligations of one of the
operating companies and corporate relocation costs and $2.2 million in estimated
legal and settlement costs in connection with former operations of one of the
operating companies.

     9. To eliminate offering expenses incurred in connection with the IPO.

     10. To eliminate the loss related to the specific contract performance of
an unrelated venture which was guaranteed by one of the acquired companies.

     11. To record goodwill amortization expense using a 40-year estimated life,
other intangible assets amortization using a 10-year estimated life and loan
origination costs amortization using a 3-year estimated life.

     12. To reflect incremental interest expense related to the sale of the old
notes of 11  1/2%, and amortization of related discount and transaction fees of
$2.1 million over ten years, together with amortization of $4.8 million of
interest and transaction fees for the $125 million Senior Subordinated Notes
issued April 1, 1999.

     13. To reduce interest expense to reflect debt at the rates that would have
been in effect for RailWorks in 1998.

     14. To record the incremental provision for federal and state income taxes
at an assumed 39.0% effective tax rate increased by the effect of goodwill
amortization which is not deductible for income tax purposes.

     15. EBITDA is the sum of earnings before interest, income taxes,
depreciation and amortization expense. Included in EBITDA is income earned on
contract retainages pursuant to contractual agreements with certain customers.
EBITDA is presented because management believes that it is a widely accepted
financial indicator of a company's ability to service
                                       24
<PAGE>   30
                             RAILWORKS CORPORATION

      NOTES TO UNAUDITED PRO FORMA STATEMENT OF OPERATIONS -- (CONTINUED)

indebtedness. However, EBITDA does not represent net income or cash flow from
operations as defined by generally accepted accounting principles, is not
necessarily indicative of cash available to fund all cash flow needs, should not
be considered as an alternative to net income or to cash flows from operating
activities (as determined in accordance with generally accepted accounting
principles) and should not be construed as an indication of a company's
operating performance or as a measure of liquidity. EBITDA is not necessarily
comparable with similarly titled measures presented by other companies.

     The adjustments related to the 1999 Acquired Companies are based on
preliminary estimates of the allocation of the purchase price and are subject to
revision.

                                       25
<PAGE>   31

                             RAILWORKS CORPORATION

                  UNAUDITED PRO FORMA STATEMENT OF OPERATIONS
                     FOR THE SIX MONTHS ENDED JUNE 30, 1999
                             (DOLLARS IN THOUSANDS)

<TABLE>
<CAPTION>
                                        RAILWORKS          1999                        PRO FORMA
                                       CORPORATION       ACQUIRED      PRO FORMA      FOR ACQUIRED    OFFERING       PRO FORMA AS
                                       HISTORICAL      COMPANIES(1)   ADJUSTMENTS      COMPANIES     ADJUSTMENTS       ADJUSTED
                                       -----------     ------------   -----------     ------------   -----------     ------------
<S>                                    <C>             <C>            <C>             <C>            <C>             <C>
Revenue..............................   $188,483         $50,923        $    --         $239,406       $    --         $239,406
Cost of revenue......................    149,199(2)       45,381         (2,243)(3)      192,337            --          192,337
                                        --------         -------        -------         --------       -------         --------
Gross profit.........................     39,284           5,542          2,243           46,069            --           46,069
Selling, general and
  administrative.....................     19,207           3,774           (614)(4)       20,293            --           20,293
expenses
                                                                            (68)(3)
                                                                         (1,006)(5)
Depreciation and amortization........      5,443(2)        3,337            471(6)         9,251            --            9,251
                                        --------         -------        -------         --------       -------         --------
Operating (loss) income..............     14,634          (1,569)         3,460           16,525            --           16,525
Other income (expense):
  Interest income/other expense......      1,061             584             --            1,645            --            1,645
  Interest expense...................     (6,458)         (1,257)            --           (7,715)       (2,698)(7)      (10,643)
                                                                                                          (230)(7)
                                        --------         -------        -------         --------       -------         --------
Income (loss) before income taxes....      9,237          (2,242)         3,460           10,455        (2,928)           7,527
Provision for income taxes...........      3,466             178          1,315(8)         4,959        (1,098)(8)        3,861
                                        --------         -------        -------         --------       -------         --------
Net income (loss)....................   $  5,771         $(2,420)       $ 2,145         $  5,496       $(1,830)        $  3,666
                                        ========         =======        =======         ========       =======         ========

EBITDA(9)............................   $ 20,077         $ 1,767        $ 3,931         $ 25,775       $    --         $ 25,775
                                        ========         =======        =======         ========       =======         ========
</TABLE>

           See Notes to Unaudited Pro Forma Statement of Operations.

                                       26
<PAGE>   32

                             RAILWORKS CORPORATION

              NOTES TO UNAUDITED PRO FORMA STATEMENT OF OPERATIONS

     1. Excludes results of operations of the 1999 Acquired Companies from their
respective acquisition dates through June 30, 1999 because they are included in
the Consolidated Financial Statements of RailWorks for the six months ended June
30, 1999.

     2. Depreciation and amortization expense includes $2.9 million of
depreciation and amortization expense included in the Cost of Revenue category,
as presented in the Quarterly Report on Form 10-Q for the quarter ended June 30,
1999, filed with the Securities and Exchange Commission.

     3. To reflect the reduction of insurance and employee benefit costs
realized by RailWorks compared to the combined historical cost incurred by the
Founding Companies and the Acquired Companies.

     4. To reduce compensation expense to the level the owners of the Founding
Companies and the Acquired Companies have contractually agreed to receive
subsequent to the acquisition of their companies. The employment agreements are
generally for three years. This amount is net of incremental corporate expenses
of $100,000.

     5. To eliminate acquisition-related costs and certain professional and
other costs incurred by the 1999 Acquired Companies in anticipation of their
acquisition by RailWorks.

     6. To record goodwill amortization expense using a 40-year estimated life.

     7. To reflect incremental interest expense related to the sale of the old
notes of 11 1/2% and amortization of related discount and transaction fees of
$2.1 million over ten years, together with amortization of $4.8 million of
interest and transaction fees for the $125 million Senior Subordinated Notes
issued April 1, 1999.

     8. To record the incremental provision for federal and state income taxes
at an assumed 39.0% effective tax rate increased by the effect of goodwill
amortization which is not deductible for income tax purposes.

     9. EBITDA is the sum of earnings before interest, income taxes,
depreciation and amortization expense. Included in EBITDA is income earned on
contract retainages pursuant to contractual agreements with certain customers.
EBITDA is presented because management believes that it is a widely accepted
financial indicator of a company's ability to service indebtedness. However,
EBITDA does not represent net income or cash flow from operations as defined by
generally accepted accounting principles, is not necessarily indicative of cash
available to fund all cash flow needs, should not be considered as an
alternative to net income or to cash flows from operating activities (as
determined in accordance with generally accepted accounting principles) and
should not be construed as an indication of a company's operating performance or
as a measure of liquidity. EBITDA is not necessarily comparable with similarly-
titled measures presented by other companies.

     The adjustments related to the 1999 Acquired Companies are based on
preliminary estimates of the allocation of the purchase price and are subject to
revision.

                                       27
<PAGE>   33

                SELECTED HISTORICAL CONSOLIDATED FINANCIAL DATA

     RailWorks acquired the Founding Companies concurrently with the
consummation of the IPO on August 4, 1998. For accounting and financial
statement purposes, Comstock Holdings, Inc. (one of the Founding Companies) was
identified as the "accounting acquirer" consistent with the requirements of
Staff Accounting Bulletin No. 97 of the SEC. All other acquisitions have been
accounted for as purchases in accordance with Accounting Principles Board No.
16.

<TABLE>
<CAPTION>
                                             PREDECESSOR COMPANY                        RAILWORKS(3)
                             ----------------------------------------------------    -------------------
                                                                                      SIX MONTHS ENDED
                                           YEAR ENDED DECEMBER 31,                        JUNE 30,
                             ----------------------------------------------------    -------------------
                             1994(1)    1995(1)    1996(1)    1997(1)    1998(2)       1998       1999
                             --------   --------   --------   --------   --------    --------   --------
                                                       (DOLLARS IN THOUSANDS)
<S>                          <C>        <C>        <C>        <C>        <C>         <C>        <C>
STATEMENT OF OPERATIONS
DATA:
  Revenue..................  $157,749   $181,616   $188,767   $153,610   $212,533    $ 86,380   $188,483
  Cost of revenue..........   137,607    164,777    169,303    136,678    182,817      77,143    152,072
                             --------   --------   --------   --------   --------    --------   --------
  Gross profit.............    20,142     16,839     19,464     16,932     29,716       9,237     36,411
  Selling, general and
    administrative
    expenses...............    16,963     15,624     15,053     13,733     17,040       6,886     19,207
  Non-recurring expenses...        --         --         --         --     19,965(4)       --         --
  Transaction fees.........        --         --         --         --      1,281(5)       --         --
  Depreciation and
    amortization...........     1,447      1,263      1,365       (213)     2,105         (58)     2,570
                             --------   --------   --------   --------   --------    --------   --------
  Operating income (loss)..     1,732        (48)     3,046      3,412    (10,675)      2,409     14,634
  Interest expense.........       (38)      (871)    (2,023)    (1,761)    (2,334)       (858)    (6,458)
  Interest and other
    income.................     2,401      2,115        476        975      1,634         287      1,061
  Income (loss) before
    income taxes...........     3,134    (19,822)       558      2,626    (11,375)      1,838      9,237
  Net income (loss)........     2,782    (19,972)        58      1,428    (12,847)      1,121      5,771
  Ratio of earnings to
    fixed charges(6).......       4.5x         *(7)      1.2x      2.1x         *(7)      2.6x       2.3x
</TABLE>

<TABLE>
<CAPTION>
                                                     PREDECESSOR COMPANY                   RAILWORKS
                                            -------------------------------------   -----------------------
                                                     AS OF DECEMBER 31,                AS OF        AS OF
                                            -------------------------------------   DECEMBER 31,   JUNE 30,
                                            1994(1)   1995(1)   1996(1)   1997(1)     1998(2)        1999
                                            -------   -------   -------   -------   ------------   --------
                                                                (DOLLARS IN THOUSANDS)
<S>                                         <C>       <C>       <C>       <C>       <C>            <C>
BALANCE SHEET DATA:
Working capital(8)........................  $30,456   $31,915   $19,257   $26,500     $ 67,391     $102,096
Total assets..............................   89,168    86,108    84,344    68,352      228,636      442,618
Total debt................................       --    19,241    24,890    15,004       51,504      220,616
Stockholders' equity......................   56,329    20,567    16,990     1,438      110,008      117,863
</TABLE>

- ---------------

(1) The selected historical consolidated financial data as of and for the fiscal
    years ended December 31, 1994, 1995, 1996 and 1997 are derived from the
    financial statements of Comstock Holdings, Inc., the accounting acquirer,
    and its predecessor, L.K. Comstock & Company, Inc., for the respective
    periods.
(2) The selected historical consolidated financial data for the fiscal year
    ended and as of December 31, 1998 are derived from the Company's
    Consolidated Financial Statements, which are comprised of financial data of:

     - Comstock Holdings, Inc., the accounting acquirer, for the year ended
       December 31, 1998;
     - the Founding Companies, other than Comstock Holdings, Inc., for the
       period from August 1, 1998 through December 31, 1998; and
     - the 1998 Acquired Companies for the period from November 4, 1998 through
       December 31, 1998.

                                       28
<PAGE>   34

(3) The selected consolidated financial data as of and for the six months ended
    June 30, 1998 and 1999 are derived from the unaudited Consolidated Financial
    Statements of RailWorks contained elsewhere in this prospectus. In the
    opinion of management, such unaudited statements include all adjustments
    (consisting of only normal recurring accruals) necessary for a fair
    presentation of the financial position and results of operations of
    RailWorks for such periods. RailWorks's results of operations for the six
    months ended June 30, 1999 are not necessarily indicative of the results
    that may be expected.
(4) Consists of $14.5 million in restricted common stock granted to the officers
    of RailWorks, $2.9 million related to settlement of employee benefit
    obligations of one of the operating companies and corporate relocation
    costs, $2.2 million in estimated legal and settlement costs in connection
    with former operations of one of the operating companies and $400,000 in
    common stock gifts made by certain employees of an operating company to
    other employees of that operating company.
(5) Represents offering expenses incurred in connection with the IPO.
(6) The ratio of earnings to fixed charges is calculated by dividing the fixed
    charges into net income before taxes and minority interests plus fixed
    charges. Fixed charges consist of interest expense, amortization of deferred
    debt issuance costs and the estimated interest component of rent expense.
(7) Earnings were inadequate to cover fixed charges by $19,822 in 1995 and
    $11,375 in 1998.
(8) Working capital is the sum of cash, accounts receivable, costs and estimated
    earnings in excess of billings on uncompleted contracts, inventories,
    deferred tax asset and other current assets, less the sum of current
    maturities of long-term debt, accounts payable and accrued liabilities,
    accrued payroll and related withholdings, billings in excess of costs and
    estimated earnings on uncompleted contracts and other current liabilities.

                                       29
<PAGE>   35

               MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
                      CONDITION AND RESULTS OF OPERATIONS

     The following discussion of the financial condition and results of
operations should be read in conjunction with our consolidated financial
statements and the related notes appearing elsewhere in this prospectus.

     This discussion contains forward-looking statements made pursuant to the
safe harbor provisions of the Private Securities Litigation Reform Act of 1995,
which involve risks and uncertainties. Our actual results may differ from the
results discussed in the forward-looking statements. Factors that could cause or
contribute to those differences include, without limitation, those discussed in
this prospectus under "Business" and this "Management's Discussion and Analysis
of Financial Condition and Results of Operations", as well as those discussed
elsewhere in this prospectus.

GENERAL

     RailWorks Corporation was formed in March 1998 to become a leading
nationwide provider of rail system services, including construction and
rehabilitation, repair and maintenance, and related products. We primarily
perform services pursuant to contracts for the completion of specific projects,
some of which take up to five years to complete. On most projects, we contract
directly with rail system operators, while on other projects we act as a
subcontractor.

     In August 1998, we acquired in separate concurrent transactions 14 Founding
Companies engaged principally in the rail system services and products business
and we consummated our IPO. In November 1998, we acquired the two 1998 Acquired
Companies and, in the first quarter of 1999, we acquired the four 1999 Acquired
Companies. Except for the acquisition of Comstock Holdings, Inc., referred to as
"Comstock", a Founding Company, all of the acquisitions have been accounted for
as purchases in accordance with Accounting Principles Board No. 16.

     For accounting and financial statement purposes, Comstock has been
identified as the accounting acquirer consistent with the SEC's Staff Accounting
Bulletin No. 97 because its owners received the largest portion, 34.6%, of the
shares of common stock issued to the owners of the Founding Companies at the
time of their acquisition. The historical financial statements prior to August
4, 1998 are those of Comstock.

     Our consolidated balance sheet as of December 31, 1998, includes the
Founding Companies and the 1998 Acquired Companies. The results of operations
for the year ended December 31, 1998, and the statement of cash flows for the
year ended December 31, 1998 include the results of operations and cash flows of
Comstock for the entire period, the results of operations and cash flows of the
Founding Companies from August 1, 1998 and the results of operations and cash
flows of the 1998 Acquired Companies from November 4, 1998. RailWorks conducted
no operations prior to the consummation of its IPO other than the acquisitions
of the Founding Companies and the financing activities related thereto,
including the IPO, and had no revenue or operating expenses prior to August 1,
1998. Consequently, management believes that RailWorks, or individual Founding
Company and 1998 Acquired Company financial comparisons, are not meaningful.

     The Founding Companies and the Acquired Companies have operated
historically under varying tax structures, including both S and C corporations,
which have influenced the historical level of owners' compensation. Certain
executive officers of each of the Founding Companies and the Acquired Companies
have entered into employment agreements with the Company. The aggregate
compensation paid to such executive officers has been reduced as reflected in
the Unaudited Pro Forma Statement of Operations included elsewhere in this
Offering Memorandum. Following the initial two-year term of the employment
agreements, we will reevaluate our

                                       30
<PAGE>   36

compensation structure after examining operating results and the value of the
services those individuals provide us.

     Prior to their affiliation with RailWorks, the Founding Companies and the
Acquired Companies were privately owned and managed as separate entities.
Operating performance and management compensation depended on regional market
conditions and the priorities and strategies of individual owners. For example,
under private ownership these companies experienced limitations on project
bonding capacity, access to capital and human resources. In addition, many of
these companies operated under an S corporation tax structure. In many
instances, management and employee compensation was not necessarily directed
toward the achievement of growth in profitability. As part of RailWorks, these
businesses have access to significantly more resources, including higher bonding
capacity, lower input costs through greater purchasing power, access to lower
cost capital and cross-selling opportunities.

REVENUE AND COSTS

     RailWorks recognizes revenue from fixed price contracts using the
percentage-of-completion method, measured by the percentage of costs incurred to
date to management's estimate of total cost for each contract. Changes in job
performance, job conditions and estimated profitability may result in revisions
to cost and income, which are recognized in the period in which the revisions
are determined. Revenue from time-and-material contracts are recognized
currently as the work is performed.

     Contract costs consist principally of wages and benefits of employees,
subcontracted services, materials, parts and supplies, depreciation and other
vehicle expenses and equipment rental, as well as indirect costs related to
contract performance. Contract costs are charged to expense as incurred.
Provisions for estimated losses on uncompleted contracts are made in the period
in which such losses are determined.

     In the case of product sales, the Company recognizes revenue when products
are delivered to customers pursuant to shipping agreements. Cost of goods sold
includes raw materials cost and production cost.

RESULTS OF OPERATIONS

Historical -- Six Months Ended June 30, 1999 Compared to Six Months Ended June
30, 1998

     Revenue.  Revenue increased $102.1 million, or 118.2%, from $86.4 million
for the six months ended June 30, 1998 to $188.5 million for the six months
ended June 30, 1999. The increase was due to the fact that the 1998 data is that
of Comstock alone. The 1999 data includes Comstock as well as the other
twenty-four companies that now comprise RailWorks Corporation.

     Gross Profit.  Gross profit increased $27.2 million or 294.2% from $9.2
million for the six months ended June 30, 1998 to $36.4 million for the six
months ended June 30, 1999. The increase was due to the fact that the 1998 data
is that of Comstock alone. The 1999 data includes Comstock as well as the other
twenty-four companies that now comprise RailWorks Corporation. The gross profit
percentage increased from 10.7% for the six months ended June 30, 1998 to 19.3%
for the six months ended June 30, 1999. This increase was the result of higher
profitability associated with the mix and type of work performed during the
second quarter of 1999 by the consolidated group as compared to historical
Comstock margins.

     Selling, General and Administrative Expenses.  Selling, general and
administrative expenses increased $12.3 million or 178.9%, from $6.9 million for
the six months ended June 30, 1998 to $19.2 million for the six months ended
June 30, 1999. The increase is due to the fact that the 1998 data is that of
Comstock alone. The 1999 data includes Comstock as well as the twenty-four other
companies that now comprise RailWorks Corporation. As a percentage of revenue,
selling, general and administrative expenses increased from 8.0% for the six
months ended June 30, 1998

                                       31
<PAGE>   37

to 10.2% for the six months ended June 30, 1999. This percentage increase was a
result of acquired companies having higher overhead selling, general and
administrative cost structures than Comstock.

     Net Income.  Net income increased $4.7 million, or 414.8%, from $1.1
million for the six months ended June 30, 1998 to $5.8 million for the six
months ended June 30, 1999, as a result of the items mentioned above.

Historical -- Year Ended December 31, 1998

     Revenue was $212.5 million for the year ended December 31, 1998. Cost of
revenue was $182.8 million. Gross profit for the year ended December 31, 1998
was $29.7 million. Selling, general and administrative expenses were $38.3
million, including non-recurring expenses of $20.0 million and transaction fees
of $1.3 million recorded during the third quarter related to the IPO. The $20.0
million of non-recurring expenses consists of a non-cash compensation charge of
$14.9 million for stock grants issued to management resulting from the
consummation of the IPO, $2.9 million related to the settlement of certain
employee benefit obligations and relocation expenses and $2.2 million for
estimated legal and settlement costs in connection with certain claims and
litigation associated with our former west coast operations. Included in other
income in the fourth quarter was a gain of $861,000 on the disposition of our
Longview, Washington industrial electrical contracting division. This
divestiture was in conjunction with Comstock's change in strategic focus to
rail-based transit projects. The net loss for the year ended December 31, 1998
was $12.8 million.

Pro Forma Founding Companies -- Year Ended December 31, 1998 Compared to the
Year Ended December 31, 1997

     The presentation below provides the pro forma results of operations of the
Founding Companies as if the Founding Companies had been acquired on January 1,
1997. The presentation only includes the results of the 1998 Acquired Companies
from November 4, 1998 to December 31, 1998. Acquired Companies are otherwise
excluded. The presentation includes pro forma results of the Founding Companies
and the Acquired Companies on a combined basis, see Pro Forma Financial
Statements beginning on page 21.

     The pro forma results of operations of RailWorks for the periods presented
may not be comparable to, and may not be indicative of, our actual results of
operations because (1) the Founding Companies and the Acquired Companies were
not under common control or management during the periods presented and (2) the
pro forma data do not reflect all of the potential benefits and cost savings
RailWorks expects to realize as a result of operating as a combined entity. The
following discussion should be read in conjunction with the Unaudited Pro Forma
Financial Statements and the related notes appearing elsewhere in this
prospectus.

                                       32
<PAGE>   38

     The following table sets forth selected pro forma financial data for the
periods indicated.

<TABLE>
<CAPTION>
                                                              UNAUDITED PRO FORMA
                                                             RESULTS OF OPERATIONS
                                                     --------------------------------------
                                                            YEAR ENDED DECEMBER 31,
                                                     --------------------------------------
                                                           1997                 1998
                                                     -----------------    -----------------
                                                             (DOLLARS IN THOUSANDS)
<S>                                                  <C>         <C>      <C>         <C>
Revenue..........................................    $256,508    100.0%   $269,498    100.0%
Cost of revenue..................................     219,400     85.5     227,052     84.2
                                                     --------             --------
Gross profit.....................................      37,108     14.5      42,446     15.8
Selling, general and administrative expenses.....      20,848      8.1      19,317      7.2
Depreciation and amortization....................       5,038      2.0       5,389      2.0
                                                     --------             --------
Operating income.................................      11,222      4.4      17,740      6.6
Interest and other income (expenses), net........      (1,063)    (0.4)       (833)    (0.3)
                                                     --------             --------
Income before income taxes.......................      10,159      4.0      16,907      6.3
                                                     --------             --------
Net income.......................................    $  5,438      2.1    $  8,812      3.3
                                                     ========             ========
</TABLE>

     Revenue.  Revenue increased $13.0 million, or 5.1%, from $256.5 million for
the year ended December 31, 1997 to $269.5 million for the year ended December
31, 1998. The increase was primarily due to growth of the Company's transit
services segment, which grew at 7.1% and represented $11.0 million in additional
revenue.

     Gross Profit.  Gross profit increased $5.3 million, or 14.4%, from $37.1
million for the year ended December 31, 1997 to $42.4 million for the year ended
December 31, 1998. As a percentage of revenue, gross profit increased to 15.8%
for the year ended December 31, 1998 from 14.5% for the year ended December 31,
1997. The increase in gross profit was due to the higher revenue base and
improved revenue mix as a result of higher margin contracts.

     Selling, General and Administrative Expenses.  Selling, general and
administrative expenses decreased $1.5 million, or 7.3%, from $20.8 million for
the year ended December 31, 1997 to $19.3 million for the year ended December
31, 1998. As a percentage of revenue, selling, general and administrative
expenses decreased from 8.1% for the year ended December 31, 1997 to 7.2% for
the year ended December 31, 1998. The decrease in selling, general and
administrative expenses was the result of decreased salaries and wages during
1998.

     Net Income.  Net income increased to $8.8 million for the year ended
December 31, 1998 from $5.4 million for the year ended December 31, 1997, an
increase of $3.4 million, or 62.0%. As a percentage of revenue, net income
increased to 3.3% for the year ended December 31, 1998 from 2.1% for the year
ended December 31, 1997. The increase was the result of the increase in revenue
and profitability discussed above.

Historical -- December 31, 1997 Compared to December 31, 1996 -- Comstock
Holdings, Inc.

     Founded in 1904, L.K. Comstock & Co., Inc. ("L.K. Comstock"), a
wholly-owned subsidiary of Comstock, is one of the largest electrical
contractors in the United States based on revenue. L.K. Comstock specializes in
power, communication and signaling installations for rail-based transit systems
and also provides electrical contracting services for commercial buildings,
heavy industrial and manufacturing plants and power plants. Through incremental
investments from 1986 through 1989, L.K. Comstock's former parent company,
Comstock Group, Inc. ("CGI"), was acquired by Spie Enertrans S.A. ("Spie"), a
multinational electrical engineering firm headquartered in Paris, France. During
Spie's ownership, L.K. Comstock sought to increase revenue by expanding its
non-transit operations in California and entering into joint ventures to design
and build large power and industrial projects in other locations. Effective
January 1, 1997, L.K.

                                       33
<PAGE>   39

Comstock was acquired (the "Comstock Acquisition") from Spie by Comstock, a
corporation owned by certain employees of L.K. Comstock.

     Following the Comstock Acquisition, Comstock's management instituted a plan
to reduce Comstock's costs and improve profitability. As a result of this plan,
Comstock has reduced general and administrative expenses by eliminating certain
management positions, including those of several French expatriates, and
reducing its Los Angeles-based staff. Comstock also improved gross profit
margins through (1) improved control over contract costs by consolidating
transit project estimating and bidding functions and (2) exiting unprofitable,
risky operations which had been expanded under Spie's ownership (such as
electrical projects for traffic systems, non-rail projects in California and
large joint ventures for the design and construction of power and industrial
plants). Under joint ventures with general construction contractors, as
preferred by Spie, Comstock had limited management control and was subject to
increased costs due to general contract conditions. Following the Comstock
Acquisition, management focused the business to benefit from its core
competencies, including rail-based transit projects. However, Comstock's
electricians and supervisors are capable of performing services on rail and
non-rail projects, thus enabling the efficient use of experienced labor on
projects in response to demand. Additionally, its accounting and management
systems are designed to provide necessary information for both rail and non-rail
projects. In 1997, Comstock derived 56.7% of its revenue and 58.6% of its gross
profit from rail-related projects as compared to 48.1% and 48.5%, respectively,
in 1996.

     Revenue.  Revenue decreased to $153.6 million for the year ended December
31, 1997 from $188.8 million for the year ended December 31, 1996, a decrease of
$35.2 million, or 18.6%. This decrease was due to a decrease in revenue from
Comstock's power and industrial operations attributable to the completion of
certain large projects in 1996 and early 1997 that were not immediately
replaced, as well as a decrease in revenue from Comstock's traffic operations,
offset in part by an increase in revenue from Comstock's commercial operations.
The decrease in revenue from traffic operations, as well as a portion of the
decrease in revenue from power and industrial operations, were due to the change
in strategic focus discussed above and it is unlikely that such projects will be
replaced. Rail-related revenue did not change significantly from 1996 to 1997
due to limited bonding capacity.

     Gross Profit.  Gross profit decreased to $16.9 million for the year ended
December 31, 1997 from $19.5 million for the year ended December 31, 1996, a
decrease of $2.5 million, or 13.0%. As a percentage of revenue, gross profit
increased to 11.0% for the year ended December 31, 1997 from 10.3% for the year
ended December 31, 1996. Gross profit decreased as a result of the decline in
revenue, offset in part by tighter cost controls implemented by management and a
reduction in the amount of activity in traffic and Los Angeles-based non-rail
projects which had significantly lower margins. Additionally, 1996 gross profit
benefited from a reduction in contract reserves of approximately $3.0 million
related to the settlement of outstanding project contingencies.

     General and Administrative Expenses.  General and administrative expenses
decreased to $13.7 million for the year ended December 31, 1997 from $15.1
million for the year ended December 31, 1996, a decrease of $1.3 million, or
8.8%. This decrease was a result of the tighter cost controls implemented by
management, including reductions in executive and administrative staff in the
power, industrial and Los Angeles-based non-rail operations. As a percentage of
revenue, general and administrative expenses increased to 8.9% for the year
ended December 31, 1997 from 8.0% for the year ended December 31, 1996. This
increase was the result of the decrease in revenue.

     Net Income.  Net income increased to $1.4 million for the year ended
December 31, 1997 from $58,000 for the year ended December 31, 1996, an increase
of $1.3 million. For each period, net income as a percentage of revenue was less
than 1%. The increase in net income was

                                       34
<PAGE>   40

partially due to the reduction of general and administrative expenses discussed
above and the elimination of management expenses of $941,000 paid to Spie and
related entities in 1996. In addition, as a result of the Comstock Acquisition
and the related purchase accounting, approximately $1.6 million of depreciation
and amortization were eliminated in 1997 as compared to 1996. These factors were
partially offset by the decrease in gross profit due to the factors discussed
above.

QUALITATIVE AND QUANTITATIVE DISCLOSURES ABOUT MARKET RISK

     RailWorks is subject to market risk associated principally with changes in
interest rates. Interest rate exposure has been principally limited to the $49.3
million of long-term debt under our revolving credit agreement outstanding at
December 31, 1999. Approximately 80% of that debt is priced at interest rates
that float with the market. A 50 basis point movement in the interest rate on
the floating rate debt would have resulted in an approximate $200,000 annualized
increase or decrease in interest expense and cash flows. The remaining debt is
either fixed-rate debt or debt that has been essentially fixed through the use
of interest rate swaps. RailWorks will from time to time enter into interest
rate swaps on its debt, when it believes there is a clear financial advantage
for doing so. RailWorks does not use derivative financial or commodity
instruments for trading purposes and the use of such instruments is subject to
strict approval levels by senior officers. Typically, the use of such derivative
instruments is limited to interest rate swaps on our outstanding long-term debt.
Our exposure related to such derivative instruments is, in the aggregate, not
material to our financial position, results of operations and cash flows.

     In March 1999, RailWorks entered into a hedge instrument with First Union
National Bank known as a "swaption", or a collared swap for a notional amount of
$50.0 million. This agreement, which carries no premium, allows us to "swap"
into a fixed interest rate beginning March 31, 1999 at no lower than 5.73% and
no higher than 6.23% against the current swap rate, which was 5.93% at the time
of trade. This instrument protects RailWorks against dramatic swings in interest
rates in anticipation of the pricing of this offering. RailWorks currently
intends to unwind the agreement upon the pricing of this offering.

FLUCTUATIONS IN QUARTERLY OPERATING RESULTS

     The Founding Companies and the Acquired Companies have in the past
experienced quarterly variations in revenue, operating income (including
operating losses), net income (including net losses) and cash flows (including
operating cash flow deficits) as a result of various factors, including projects
commenced and completed during a quarter, the number of business days in a
quarter and the size and scope of projects. A variation in the number of
projects, progress on projects or the timing of the initiation or completion of
projects can cause periods in which certain operating resources are not
generating revenue and can cause significant variations in operating results
between reporting periods. Negative fluctuations have been particularly
pronounced, and net losses have been incurred, in the first and fourth calendar
quarters, generally due to adverse weather conditions. We expect to continue to
experience such quarterly fluctuations in operating results, including possible
net losses. See "Risk Factors -- Risks Relating to RailWorks -- Certain
Operating Companies Have a History of Losses" and "-- The Rail System Industry
is Cyclical".

LIQUIDITY AND CAPITAL RESOURCES

     On August 4, 1998, we completed the IPO of 5.0 million shares of its common
stock at a price of $12.00 per share. We raised approximately $52.5 million of
capital, net of underwriting discounts and other offering expenses, of which
approximately $51.1 million was used for the cash portion of our acquisitions of
the Founding Companies and approximately $1.4 million was used for the repayment
of debt.
                                       35
<PAGE>   41

     At June 30, 1999, RailWorks had working capital of approximately $102.1
million, a $34.7 million increase from December 31, 1998 when working capital
was $67.4 million. Net cash used in operating activities was approximately $21.8
million for the six months ended June 30, 1999. Net cash used in investing
activities was approximately $84.0 million for the six months ended June 30,
1999, which included $72.7 million of cash for acquisitions. Net cash provided
by financing activities for the six months ended June 30, 1999 was approximately
$106.7 million, which included $125 million from the issuance of the existing
notes. Also included in financing activities was $141.2 million from the
issuance of long-term borrowings, offset by debt repayment of approximately
$155.4 million.

     At December 31, 1998, RailWorks had working capital of approximately $67.4
million. Net cash used in operating activities for the year ended December 31,
1998, was approximately $13.9 million. Net cash used in investing activities for
the year ended December 31, 1998 was approximately $54.4 million which consisted
of $52.5 million of cash for acquisitions (including $49.5 million for the
Founding Companies) and $1.3 million for purchase of equipment and leasehold
improvements. Net cash provided by financing activities for the year ended
December 31, 1998 was approximately $70.0 million, which included $52.5 million
from the issuance of common stock relating to the IPO and borrowings of
approximately $61.3 million, offset by debt repayment of approximately $41.2
million.

     Capital expenditures were $7.4 million, $1.3 million, $448,000 and $690,000
in the six months ended June 30, 1999, fiscal 1998, 1997 and 1996, respectively.
Historically, capital expenditures have been, and future expenditures are
anticipated to be, primarily to support expansion of our operations, including
its management information systems. Our capital expenditures over the next
several years, as a percentage of its revenues, are expected to decrease
compared to those of the past three fiscal years.

     We anticipate capital expenditures of approximately $5.0 million for
equipment and leasehold improvements over the balance of 1999. This investment,
which we expect to finance primarily by working capital and vendor financing,
relates to the anticipated facility consolidations of the operating companies,
the installation of a comprehensive financial reporting computer system and the
purchase of supplemental machinery and equipment needed to meet operational
demands. We have no other significant commitments for future capital
expenditures, although it is likely that cash outflows for business acquisitions
and equipment leases will continue.

     Cash for acquisitions and working capital are financed by funds generated
from operations, together with borrowings under our credit facilities with
NationsBank, N.A. We have in place a three-year, $105 million senior revolving
credit facility. At June 30, 1999, pro forma for the sale of the old notes and
the application of the net proceeds, we would have had $85.6 million of the
credit facility available for borrowing. At June 30, 1999, we had $62.3 million
of borrowings outstanding under the credit facility, which bore interest at a
weighted average annual rate of 7.45% as of such date. The credit facility is
secured by a first lien on all of the capital stock of our subsidiaries and on
all accounts receivable of RailWorks and its subsidiaries. The credit facility
contains a negative pledge on all of our other assets and the assets of our
subsidiaries and other usual and customary covenants and events of default for
transactions of the type contemplated by the credit facilities. Borrowings under
the credit facility bear interest, at our option, at an interest rate equal to
(1) LIBOR plus the applicable margin for LIBOR loans, which ranges from 125
basis points to 250 basis points based on the ratio of Funded Debt to EBITDA, as
such terms are defined in the credit facility, or (2) the Alternate Base Rate,
which is defined as the higher of (a) the NationsBank prime rate and (b) the
Federal Funds rate plus 50 basis points, plus up to 125 basis points based on
the ratio of Funded Debt to EBITDA. We may also finance future acquisitions with
shares of common stock and contingent consideration.

                                       36
<PAGE>   42

     In connection with some acquisitions, we have agreed, and in the future may
agree, to pay additional consideration based on operating results of the
acquired entity. The payment of any such earnouts could result in an increase in
the purchase prices of such acquisitions and, as a result, additional goodwill.

     We believe that funds generated from operations, together with existing
cash, the net proceeds of this offering and borrowings under the $105 million
credit facility, will be sufficient to finance its current operations, planned
capital expenditures, pending acquisitions and internal growth for at least the
next several years. If we were to make a significant acquisition for cash, it
may be necessary for us to obtain additional debt or equity financing.

INFLATION

     We do not believe that inflation has had a material effect on its results
of operations in recent years. However, there can be no assurance that our
business will not be affected by inflation in the future.

YEAR 2000

     We have developed a plan to address Year 2000 issues. The plan addresses
three main areas: (a) information systems; (b) embedded chips; and (c) supply
chain readiness (including customers as well as inventory and non-inventory
suppliers). To oversee the process, we have established a committee comprised of
accounting and information systems personnel who are reporting regularly to the
board of directors and the Audit Committee.

     We have completed evaluation and testing its internal information systems
and has substantially completed remediation and upgrading of these systems. With
respect to other equipment with date sensitive operating controls, such as
manufacturing equipment, HVAC, security and other similar systems, we have
substantially completed remediation or replacement of these items. We are
continuing the process of identifying and contacting suppliers, both inventory
and non-inventory, and customers to determine the state of their Year 2000
readiness.

     Based upon our current estimates, we do not expect incremental
out-of-pocket costs of its Year 2000 program to exceed $50,000. As of June 30,
1999, approximately $25,000 of these funds had been spent. These costs are
expected to include third party consultants, remediation of existing computer
software and replacement and remediation of embedded chips. These costs do not
include internal management time and the deferral of other projects, the effects
of which we do not expect to be material to our results of operations or
financial condition.

     At this stage of the process, we believe that it is difficult to
specifically identify the most reasonably likely worst case Year 2000 scenario.
As with all service providers and manufacturers, a reasonably likely worst case
scenario would be the result of failures of third parties, including, without
limitation, governmental entitles and entities with which we have no direct
involvement, that continue for more than several days in various geographic
areas where we provide services, its products are manufactured or from which we
source raw materials and components. In connection with our manufacturing and
supply of raw materials and components, we are considering various contingency
plans. Any such plans would necessarily be limited to matters which we can
reasonably control.

     Our Year 2000 efforts are ongoing and our overall plan, as well as the
consideration of contingency plans, will continue to evolve as new information
becomes available. While we anticipate continuity of our business activities,
that continuity will be dependent upon our ability, and the ability of third
parties upon whom we rely directly or indirectly, to be Year 2000 compliant.

                                       37
<PAGE>   43

                                    BUSINESS

OVERVIEW

     RailWorks Corporation is a leading provider of integrated rail system
services and products to a diverse base of customers throughout the United
States. Management believes RailWorks is positioned to grow significantly due to
its ability to comprehensively design, supply, construct and maintain rail
systems. We base our strategy on providing a full range of rail-related services
and products on a "turnkey" basis throughout North America and offering rail
system solutions under the "RailWorks" brand. RailWorks provides track
construction, rehabilitation, repair, maintenance and operations; rail
electrification and installation of communication and signaling systems; and
related products and supplies. We provide these services to a wide variety of
customers, including Class I and shortline railroads, publicly funded transit
authorities and commercial and industrial companies. RailWorks also provides
non-rail products and services such as electrical contracting, bridge and
highway support structures and related concrete products.

INDUSTRY OVERVIEW

     The rail passenger and freight industries have undergone significant
changes in recent years. Changes in the industry have affected Class I
railroads, shortline and regional railroads, passenger railroads and transit
systems. In addition, industrial and other commercial companies that own and
maintain their own rail systems have become more focused on transportation
logistics and achieving cost efficiencies. These changes have resulted in an
ongoing reconfiguration of the country's rail infrastructure, significant new
construction projects and emerging demand for outsourced construction,
rehabilitation, repair and maintenance services.

     Total Expenditures.  Based on information published by the Association of
American Railroads (the "AAR") and the American Public Transit Association
("APTA"), management estimates that expenditures by rail system operators for
domestic new construction, rehabilitation, repair and maintenance were
approximately $16 billion in 1998. Management estimates that the breakdown of
expenditures was as follows:

                                     [LOGO]

     We also believe that expenditures for these services outside the United
States have increased significantly in recent years as a result of
infrastructure construction and modernization programs, as well as privatization
of large rail systems. In many instances, foreign governments and companies have
sought the expertise of designers, engineers and construction managers in the
United States.

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<PAGE>   44

     Class I Railroads.  According to the AAR, Class I track usage (defined as
tons shipped per track mile) has increased significantly from 4.7 million in
1988 to 7.8 million in 1997, representing a 5.9% compound annual growth rate. As
a result of industry consolidation, there are only eight Class I railroads, as
defined by the Surface Transportation Board, operating in the United States
today, compared to 27 in 1980. These railroads are Burlington Northern Sante Fe
Railway, CSX Transportation, Kansas City Southern Lines, Norfolk Southern
Railway Company, Union Pacific Railroad, Canadian National, Canadian Pacific and
Consolidated Rail Corporation. According to the AAR, these railroads accounted
for 71% of the rail mileage operated in the United States and 91% of railroad
revenue in 1997. In recent years, the Class I railroads have sought to
rationalize their systems, for example by "double-tracking" certain high traffic
main lines and abandoning portions of their systems that generate lower volumes
of traffic. Mergers of Class I systems have also created significant
construction projects as the systems are reconfigured and integrated.
Historically, the major railroads have been vertical organizations that sought
to perform their own construction and maintenance by utilizing specialized
workforces and equipment for these functions. Management believes that as Class
I railroads seek to continue to improve their cost structures, they will
increasingly continue to outsource certain construction and maintenance
functions to independent contractors.

     Shortline and Regional Railroads.  In recent years, the number and coverage
of shortline and regional railroads, i.e., those railroads which are not Class I
railroads, have increased significantly. The Staggers Rail Act of 1980 provided
for partial deregulation of the railroad industry and created mechanisms by
which larger railroads could more easily dispose of portions of rail line. Since
that time, the larger railroad systems in the United States have streamlined
their operations by disposing of portions of their systems that generate lower
volumes of traffic and other companies have acquired portfolios of shortline
railroads. According to the AAR, there are approximately 550 shortline and
regional railroads, which in the aggregate generated approximately 9% of all
railroad revenue in 1997. The percentage of total track miles operated by
shortline and regional railroads in the United States increased to 29% in 1997
from approximately 17% in 1986. Shortline and regional railroads spend a
relatively large portion of their capital and operating budgets on maintenance
of their track assets, because these assets are often in poor condition when
they are acquired. These railroads typically utilize independent contractors for
their maintenance and construction programs, because they do not have systems
large enough to support the purchases of equipment and development of workforces
that would be required for these functions.

     Passenger Rail Transit Services.  The growth of major metropolitan areas
and the aging of existing rail systems have resulted in significant developments
in passenger rail transit services. Heavy rail, commuter rail (service between
metropolitan and suburban areas) and light rail (typically, short trains
operating on rights-of-way that are not separated from other traffic) have
emerged as attractive alternatives to bus or automobile transit and older
commuter rail systems have been rehabilitated and extended to handle increased
ridership. Many older urban systems (such as the New York City subway system)
are undergoing significant rehabilitation and/or modernization, while major
heavy rail systems built in the 1970s (such as the systems in San Francisco and
Atlanta) are being extended and upgraded. Additionally, there have been several
recent initiatives to develop high-speed rail transit networks between major
urban areas (for example, in Florida and the Northeast corridor). According to
APTA, there are now 18 commuter rail agencies in 14 urban areas, 14 heavy rail
agencies in 11 urban areas and 23 light rail agencies nationwide. According to
APTA, commuter and light rail ridership has increased 30% and 99%, respectively,
from 1985 to 1997. Since 1979, approximately 16 cities have constructed new
light rail-based transit systems and other cities have either extended or
refurbished their existing systems, with ridership increasing by approximately
150% over the period from 1978 through 1996. In June 1998, the President signed
the Transportation Equity Act for the 21st Century ("TEA 21"), which is expected
to provide $42 billion of funds for transit projects through 2003. See
"Government Regulation -- TEA 21." This represents more than a 50% increase of
funding
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<PAGE>   45

from the previous six-year period. According to APTA, in 1997, 53.7% of transit
spending was derived from federal funding with the balance derived from state
and local sources. Accordingly, opportunities to provide rail-related signaling,
communication, electrical and track system construction, rehabilitation, repair
and maintenance services for transit systems have increased and are expected to
continue to increase significantly.

     Industrial Companies.  Companies install trackwork in their plants to
transport raw materials, equipment and finished goods. This trackwork consists
of connector lines that provide access to Class I or shortline railroads and
railyards to coordinate the shipment and delivery of cargo to and from their
plants. Companies are responsible for maintaining their own track and typically
construct and reconfigure trackage as part of plant construction and expansion.
Companies seek to optimize their track infrastructure in order to (1) reduce the
risk of accidents that can cause delays, property damage, and environmental
spills, (2) gain access to competing railroads to drive down costs and (3)
reduce transportation costs by minimizing the switching of railcars which is
time consuming and expensive. Such companies generally do not have the internal
resources to perform these services and typically use independent contractors to
design, construct and maintain these rail lines.

COMPETITIVE STRENGTHS

     Breadth of Services and Products.  Management believes that RailWorks
offers a broader range of services and products than most industry participants.
We believe that larger rail system operators are seeking to establish
relationships with contractors that specialize in rail system services and
products and that can provide efficient, integrated solutions over the entire
life cycle of their assets. We further believe that rail system operators and
industrial companies increasingly seek to enter into arrangements with a smaller
number of companies that can provide integrated services on a national or
regional basis, in order to ensure centralized management of their rail assets,
adherence to uniform quality standards and more cost-effective procurement
practices. We cross-sell our services and products by combining the strengths of
the operating companies to provide its customers with integrated rail system
solutions. For example, we combine our design and engineering services with
track construction to offer a turnkey approach to track construction projects.
Our ability to bundle services, including construction, rehabilitation and
maintenance, under a single contract has allowed us to compete more effectively
against companies that provide a more limited range of services.

     Expansive Geographic Coverage.  Our 48 operating facilities provide us with
expansive geographic coverage that enables us to reach customers throughout
North America. These multiple facilities enable us to undertake projects more
cost effectively than we could without local facilities. RailWorks can perform
projects at multiple locations for our national account customers, enabling our
customers to use a single company for rail system projects throughout the United
States and Canada. We also can allocate equipment and technical specialists
throughout the United States and Canada to maximize asset utilization, satisfy
regional demand and complete projects in remote locations. We believe our broad
geographic presence reduces the impact of local and regional economic cycles,
and reduces weather-related or seasonal variations in our business.

     Significant Market Presence.  In an industry that has traditionally been
comprised of regional competitors, we believe our size gives us a competitive
advantage. Our substantial contract bonding capacity allows us to bid on
additional projects and more substantial projects to which smaller companies may
not have access. Our ability to bid on these additional projects has allowed us
to significantly increase our project backlog since August 1998. In addition,
our size provides significant economies of scale in terms of materials
purchasing, capital expenditures and administrative costs.

                                       40
<PAGE>   46

     Diverse Sources of Revenue.  We derive a significant portion of our revenue
from public transit authorities whose funding is appropriated from federal,
state and local sources which makes those funds less sensitive to economic
cycles. In addition, a portion of our work is related to government-mandated
safety standards and we therefore cannot postpone it. We sell our services
through a large number of individual contracts. No contract accounted for more
than 3.9% of our pro forma revenue for the year ended December 31, 1998. More
than half of our contracts have a duration in excess of one year, providing us
with a significant source of future revenue. We have strong relationships with a
wide variety of customers, including:

     Class I railroads that have utilized RailWorks for repair and maintenance,
construction or engineering and supply:

     - CSX Transportation

     - Union Pacific Railroad

     - Burlington Northern Santa Fe Railway

     - Canadian National Railway

     Shortline and regional railroads that have contracted with RailWorks for
track construction and maintenance work or product supply:

     - Alaska Railroad Corp.

     - Louisville & Indiana Railroad

     - Indiana Southern Railroad Company

     - Indiana & Ohio Rail Systems

     Publicly funded transit authorities that have contracted with RailWorks for
electrical installations, signaling, communications and station projects:

     - New York City Transit Authority

     - New York Department of Transportation

     - Los Angeles Metropolitan Transit Authority

     - Connecticut Department of Transportation Rail Division

     Commercial and industrial companies that have contracted with RailWorks for
track construction and maintenance and non-rail electrical contracting work:

     - United States Steel

     - Bethlehem Steel

     - Morse Diesel

     - Babcock & Wilcox

     Experienced Management.  Our senior operating managers have an average of
26 years of experience in the rail services and products industry, and many of
them are or have previously served as leaders of industry trade groups. We use a
corporate management structure that allows these senior managers to focus on
marketing and growing their operations instead of administrative
responsibilities. Management has created a culture of cooperation and teamwork
among the operating companies that emphasizes dissemination of best practices
among our regional and local management teams. For example, management believes
that RailWorks can successfully implement best practices in the areas of 24-hour
emergency rerailment services, annual maintenance contracts and efficient
inventory management. As of October 15, 1999, the

                                       41
<PAGE>   47

RailWorks directors and executive officers and the senior managers of the
operating companies beneficially owned an aggregate of      % of the RailWorks
outstanding common stock.

STRATEGY

     Key elements of our strategy include the following:

     Capitalize on Scale and Geographic Coverage.  By combining the operations
of the Founding Companies and the Acquired Companies, we have achieved greater
size and scope than regional and local contractors. We believe that we will be
able to achieve continued internal growth by building our national accounts
program to serve rail customers with multiple sites and by enhancing our sales
and marketing programs. Management expects to leverage our geographic network
and greater bonding capacity to increase our business. We currently have very
limited international operations but over time we may increase our activity in
international markets, where privatizations of railroads and large transit
projects are creating increased demand for sophisticated design and construction
management services. We also share equipment and labor while managing multiple
work sites. We believe that this process of sharing resources and our
comprehensive bidding capabilities enable us to compete more effectively.

     Utilize Cross-selling.  The Founding Companies and the Acquired Companies
have provided RailWorks with a broad range of rail-related services and
products. We intend to leverage our existing customer base to "cross-sell" these
services and products. For example, we will seek to provide additional track
construction and maintenance services to Class I railroads who are already
significant buyers of our track supplies. We also intend to continue to
emphasize the marketing of rail maintenance programs, which provide recurring
revenue and strengthen customer relationships. We have been successful in
leveraging our maintenance relationships to obtain new rail system installation
projects. In addition, by placing a stronger emphasis on our design and
engineering services we expect to gain access to more track construction
opportunities.

     Expand Through Acquisitions.  Management believes RailWorks is
well-positioned to capitalize on the consolidation of the rail system services
and products industry on a regional and nationwide basis. We have created an
efficient operating platform that management expects will facilitate the
integration of future acquisitions. Our acquisition program includes expanding
geographic coverage throughout North America, broadening our lines of services
and products, and adding density and operating leverage within our current
markets. Management believes that the experience and industry reputations of the
senior managers of the operating companies and senior corporate management of
RailWorks provide RailWorks with a competitive advantage in identifying,
completing and integrating acquisitions. Since we completed our IPO in August
1998, we have acquired 13 companies. We have entered into letters of intent to
acquire another six companies. We expect to execute definitive purchase
agreements with one exception, which will have customary closing conditions,
including completion of due diligence, prior to the end of 1999. However, we
cannot guarantee that we will consummate either or both of those acquisitions.
Our acquisition strategy includes the following elements:

     - Enter New Geographic Markets.  Management intends to expand into
       geographic markets that we do not currently serve by acquiring
       well-established contractors and related supply companies that are
       leaders in their regional or local markets. In addition, after an initial
       emphasis on acquisitions within the United States and Canada, management
       may pursue international acquisition opportunities.

     - Enter Complementary Services and Product Markets.  Management intends to
       continue acquiring companies offering complementary services and products
       to those currently offered by the operating companies. Specifically,
       management believes that attractive acquisition opportunities will
       continue to exist with respect to design and engineering

                                       42
<PAGE>   48

       firms, designers and manufacturers of signaling and communication systems
       and suppliers of electrical equipment, rail, switches and panels, and
       concrete and steel ties.

     - Expand Within Existing Geographic Markets.  Management plans to acquire
       additional companies in many of the regions in which we currently operate
       in order to expand the volume and scope of our operations in a particular
       market. Management will continue to pursue acquisitions of smaller
       companies to increase utilization of our existing fixed assets and
       equipment or to gain access to new customers. Management believes these
       types of acquisitions will improve operating efficiencies and more
       effectively use our capital resources without a proportionate increase in
       administrative costs.

     Reduce Operating Costs.  Key areas in which management has achieved and
expects to continue to achieve cost savings include (1) purchasing of equipment
and supplies, (2) insurance expenses and (3) financing costs. We have also
established an operating platform to achieve optimal utilization of equipment,
inventory and our workforce. We expect to continue to reduce administrative
expenses through the integration of certain accounting, financing, human
resources and other functions.

SERVICES AND PRODUCTS

     We operate in three business lines: (1) transit services; (2) rail
construction services; and (3) rail products and supplies. The following chart
sets forth the percentage of 1998 pro forma revenue that was represented by each
business line.

                                     [LOGO]

  Transit Services

     Our transit services business includes all products and services that we
provide to rail-based public transit agencies and authorities in various
metropolitan markets. We typically contract with these agencies to install (1)
electric train traction power systems by means of third rail or overhead
catenary wiring, (2) train control signal systems, (3) train, station and
command station communications systems, (4) general electrical installations for
lighting and other applications and (5) tunnel and station track. We can perform
major new projects that involve track installation including excavation,
grading, paving and drainage improvements as well as minor rehabilitation
projects. Projects for new public transit lines generally include the
installation of all of these systems, giving us a competitive advantage.

     In addition, we leverage our knowledge of transit systems to efficiently
provide mechanical services, including installations of heating and air
conditioning systems, ventilating and pump rooms, fan chambers, elevators and
escalators. We have experience with rubber tired vehicular
                                       43
<PAGE>   49

people mover systems, installing concrete guided trackway, power guide beam,
central guidance rail, walkway and handrails.

     The duration and size of our transit contracts vary greatly depending on
the scope of the project. Large scale transit projects have had a term of up to
four years and have a total contract size of up to $100 million. We have
performed installations for most of the country's transit authorities, including
those in Atlanta, Boston, Chicago, Los Angeles, New York, Philadelphia,
Portland, San Diego, San Francisco, St. Louis and Washington, D.C. We generally
perform our services as either a prime contractor directly to the transit
agencies or as a subcontractor to large civil engineering contractors or
equipment manufacturers. Transit authorities award contracts through competitive
bidding and award contracts on a fixed price basis, generally to the lowest
bidder. As a result, we focus our business to (1) provide accurate bid
estimating to both win contracts and ensure a profit and (2) monitor
construction costs to ensure that projects are completed on time and within
budget. Our bidding process is highly involved and draws on the expertise of
many individuals within RailWorks. We carefully consider a variety of factors,
including material prices, local labor rates and practices, our knowledge of the
work site and contracting practices of the transit authorities. We have a
rigorous project review process that continually monitors the incurred labor and
material costs against an initial plan to avoid overruns. We believe that these
methods provide us with a competitive advantage.

     As an outgrowth of our transit-related business, we also perform commercial
real estate electrical installations, primarily in the New York City
metropolitan area and industrial electrical installations throughout the United
States. We contract for these projects on an opportunistic basis, that is, when
we have resources available and can realize attractive returns. We do not intend
to grow our non-rail-related businesses beyond the current scope.

  Rail Construction Services

     Our rail construction services business consists of providing rail design,
construction and maintenance services to Class I and shortline railroads and
industrial companies with on-site rail infrastructure. Rail design is a highly
specialized discipline and there are a limited number of companies that can
provide these services. We utilize our rail design capabilities to facilitate
access to rail construction projects. By having the ability to provide
integrated design-build services, we have had success in increasing our project
flow. Our rail construction efforts primarily involve the construction of main
line segments, passing sidings, rail yards, connector segments between railroads
and industrial sites, turnouts and track and road intersections. With respect to
track maintenance, we enter into multi-year contracts with several customers to
provide ongoing maintenance of on-site rail infrastructure. Maintenance
contracts allow us to obtain recurring revenues and gain access to additional
new construction projects from the same customer. Additional rail contracting
services also include the removal of tracks which are no longer in use.

     Rail construction and maintenance are highly complex processes that usually
involve numerous separate parties that design, supply and construct the
different elements of the track. Following the design stage, construction
entails (1) site preparation and grading, (2) the laying of ballast (gravel) to
provide a solid track fixation medium, (3) the positioning of cross ties, (4)
securing rail with high precision using metal plates, spikes and clamps, (5)
installing complex track crossings and turnouts and (6) installing other track
related systems such as signal, communications and automatic train control and
safety devices. Management believes that our ability to bundle these services on
a turnkey basis provides RailWorks with a significant competitive advantage.

     We provide our rail services on a nationwide basis. Since it is generally
not economical to work on contracts outside of a 300 mile radius of an operating
facility, this broad footprint facilitates servicing customers with multiple
sites across regions. Most of our competitors in this

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<PAGE>   50

market are regionally focused. Management believes RailWorks has a competitive
advantage due to its ability to direct equipment and labor resources to regions
with higher demand due to economic or seasonal fluctuations. We also maintain
track and track material inventory at each location. By coordinating information
across our network we can maximize inventory utilization and improve supply for
projects in different regions.

  Rail Products and Supplies

     We manufacture wooden and concrete products and rail fastening systems out
of four facilities. Our wooden products include cross ties and switch and bridge
timbers. Our wood treating operations consist of pressure-treating pre-cut beams
of hardwood to provide weather-proofing. These treated cross ties are used for
securing rail for tracks or assembled to construct bridge support structures.
Concrete products consist primarily of pre-cast structural components for
bridges and other support structures. Our concrete operations consist of pouring
mixed concrete into large molds to create specialized structural support
components. We also design and manufacture rail fastening systems, which are
primarily used in overhead and portal crane rail applications.

     Our rail construction operations source rail and other track materials
(primarily metal components such as plates and spikes) from (1) the reclamation
of existing track that is no longer in use, (2) track materials brokers and (3)
manufacturers. We sell our rail products and supplies directly to contractors,
including our own subsidiaries, and to Class I and shortline railroads that
perform their own track construction and maintenance. Some of our products are
used in non-rail applications such as highway construction and decorative
landscaping.

     Our product capabilities provide us with an advantage in supplying our
track construction and maintenance operations. This is particularly important in
the context of wooden cross ties as the market has experienced shortages in the
past. There are a limited number of cross tie manufacturing facilities in North
America due to stringent regulations. We enhance our competitive advantage by
having uninterrupted access to cross ties and other track products. We have also
developed strong customer relationships through products sales, particularly
with Class I and shortline railroads. Additionally, we lease track construction
and maintenance equipment. By offering operating leases for such equipment, we
have formed additional industry relationships, created an additional revenue
source and established an avenue to fully utilize the operating life of our
equipment. As part of our growth strategy, we intend to leverage these
relationships to cross-sell other services, particularly design and engineering
as well as track construction and maintenance.

ACQUISITION PROGRAM

     Management believes the combination of management's acquisition expertise
and the highly fragmented nature of the rail services and products industry
provides RailWorks with significant acquisition opportunities. RailWorks
identifies acquisition candidates by leveraging the relationships of its
experienced operational managers and utilizing its dedicated acquisitions team.
We focus on acquiring companies that have a strategic fit, provide us with cost
synergies, complement our geographic presence, and demonstrate a willingness to
learn and share best practices through open communications. After an initial
screening, management evaluates each acquisition candidate through its due
diligence process, which includes detailed financial and operational reviews.
During the due diligence process, we often identify a number of areas in which
we expect to realize efficiencies during the integration process. We offer
acquisition candidates several benefits, including:

     - expertise to expand in specialized markets;

     - enhanced productivity through the reduction of administrative burdens;

                                       45
<PAGE>   51

     - national name recognition;

     - increased bonding capacity;

     - access to public capital markets; and

     - the opportunity for a continued role in management.

Other key elements of our acquisition program include:

     Retain and Provide Incentives to Existing Management.  We seek acquisitions
of successful companies whose senior managers will remain as employees of
RailWorks and continue to operate their respective businesses on a local level.
We motivate these managers and align their interests with those of RailWorks
through (1) employment agreements, (2) shares of common stock as a portion of
the acquisition consideration and (3) a structured earnout program which is tied
to the acquired entity meeting specific earnings targets.

     Leverage Industry Reputation and Contacts.  We utilize existing industry
relationships established by the operating companies and RailWorks management to
develop a broad base of potential acquisitions. We intend to remain actively
involved in industry organizations on local and national levels, working with
independent companies to support issues of interest to RailWorks.

     Acquisition Consideration.  In the course of implementing our acquisition
strategy, we have typically used cash and performance-based earnouts as
consideration for the acquired businesses. In the future, we expect to use a
combination of cash, common stock, promissory notes and performance-based
earnouts as consideration for acquired businesses. See "Risk Factors -- Risks
Relating to the Company -- We May Be Unable to Complete and Finance
Acquisitions".

     Since completion of the IPO, RailWorks has acquired the following
companies:

<TABLE>
<CAPTION>
 ACQUISITION         NAME OF        FISCAL 1998
    DATE        ACQUIRED COMPANY      REVENUE       HEADQUARTERS          BUSINESS LINE
- -------------  -------------------  -----------    ---------------  --------------------------
                                        (in
                                     millions)
<S>            <C>                  <C>            <C>              <C>
November 1998  Armcore Railroad
               Contractors,
               Inc................     $ 3.8       Frankfort, IN    Rail construction services
November 1998  Sheldon Electric
               Co., Inc...........       1.4(1)    Long Island      Transit services
                                                   City, NY
January 1999   Gantrex Group......      13.9       Ajax, Ontario,   Rail products and supplies
                                                   Canada
January 1999   Mid West Railroad
               Construction and
               Maintenance
               Corporation of
               Wyoming............      13.2       Salt Lake City,  Rail construction services
                                                   UT
January 1999   FCM Rail, Ltd......       4.9       Grand Blanc, MI  Rail products and supplies
March 1999     F&V Metro
               Contracting Corp.
               and Affiliates.....      46.0       Farmingdale, NY  Transit services
April 1999     M-Track
               Enterprises,
               Inc................      10.6       Bronx, NY        Rail construction services
April 1999     McCord Treated
               Wood,
               Inc./Birmingham
               Wood, Inc..........      11.1       Warrior, AL      Wooden tie suppliers
</TABLE>

                                       46
<PAGE>   52

<TABLE>
<CAPTION>
 ACQUISITION         NAME OF        FISCAL 1998
    DATE        ACQUIRED COMPANY      REVENUE       HEADQUARTERS          BUSINESS LINE
- -------------  -------------------  -----------    ---------------  --------------------------
                                        (in
                                     millions)
<S>            <C>                  <C>            <C>              <C>
May 1999       Pacific Northern
               Rail Contractors...      21.9       Abbotsford,      Rail construction services
                                                   British
                                                   Columbia,
                                                   Canada
June 1999      Neosho Incorporated
               and Affiliates.....      80.7       Topeka, Kansas   Rail construction services
June 1999      Earl Campbell
               Construction
               Company, Inc.......       7.4       Houston, Texas   Rail construction services
August 1999    Wood Waste Energy,
               Inc................       6.0       Saint Louis,     Rail products and supplies
                                                   Missouri
</TABLE>

- ---------------

(1) Railworks acquired certain assets and ongoing contracts of Sheldon Electric
    Co., Inc. Therefore, only revenue since the date of acquisition ($1.4
    million since November 4, 1998) has been included above.

SOURCES OF SUPPLY

     We purchase new rail from a limited number of suppliers. New rail is
generally installed only on main lines, where the track may carry high volumes
of heavy traffic at high speeds. Over time, rail is removed, inspected and, if
in the appropriate condition, refurbished for sale as "relay" rail. Relay rail
is typically installed on secondary -- non-main line -- tracks, as well as yard
or branch tracks. Total rail life before scrapping may be as long as 60 years.
We also purchase a large volume of relay rail that third parties refurbish and
resell.

     Similarly, we regularly purchase entire sections of track that we remove
and subsequently disassemble at our facilities. We inspect the various track
components -- rail, ties, and accessories -- and items are placed into our
inventory, either in their "as removed" condition or after being refurbished by
third parties, or sold for scrap. Additionally, in connection with certain
repair and rehabilitation projects, we acquire removed trackwork. Management
believes the RailWorks network of contractors enables it to acquire previously
used track on comparatively advantageous terms.

     For installing electrical signaling and communication systems for transit
authorities, we purchase equipment from a limited number of suppliers. See "Risk
Factors -- Risks Relating to the Company -- We Rely on Subcontractors and
Suppliers".

     Certain of our operating companies process creosote-treated wooden ties.
Their operations include the purchase of raw lumber, trimming the lumber to
specified sizes, pressurized impregnation of the lumber with creosote
preservative and finishing of the ties, which would include the pre-drilling of
spike holes and the attachment of plates, as specified by the customer. The
service life of pressure treated ties has been extended to a range of 25 to 40
years.

     Management believes RailWorks can purchase materials in sufficient
quantities to permit it to realize purchasing economies and discounts from its
suppliers. Historically, the cost of the lumber used to produce wooden ties,
steel used to produce rail, and copper used to produce electrical wiring has
fluctuated significantly due to market and industry conditions. Increasing
demand for these raw materials may result in cost increases. We cannot guarantee
that we will be able to recoup any of those increases by increasing the prices
of our products. Further, a reduction in supply of lumber, steel or copper due
to increased demand or other factors could have an adverse effect on our
business, financial condition and results of operations.

                                       47
<PAGE>   53

SALES AND MARKETING

     We maintain a targeted national sales program to further develop the
business of each of the operating companies. This initiative focuses on the
Class I railroads and other large industrial companies with facilities in
multiple areas. Prior to their acquisition by RailWorks, the individual
operating companies had been unable to serve such customers on a comprehensive,
nationwide basis. In addition, our ability to offer electrical installation
services together with rail construction, rehabilitation, repair and maintenance
services and related products provides us with opportunities to cross-sell our
services to large industrial companies. Management believes that RailWorks has
an advantage over its competitors since it can offer consistent, high-quality
service and products throughout the United States. Our expansive geographic
coverage enables customers to use our services and products in multiple
locations rather than dealing with numerous regional or local companies.

     We have achieved significant synergies in our marketing programs.
Management also believes that RailWorks has developed and will continue to
refine cross-selling programs under which:

          (a) our design and engineering groups provide timely leads to its
     construction, product supply and electrical installation companies,

          (b) our electrical signaling and communications companies, which have
     previously utilized third parties for track engineering and construction,
     utilize other operating companies for these projects, and

          (c) our track construction companies contract with other operating
     companies for signaling, communication and electrical installation
     services.

     Similarly, our product supply companies have, over the years, developed
long-term relationships with the Class I railroads and large industrial
companies, and management believes that these relationships provide an
attractive basis for marketing our construction and maintenance services.

BIDDING AND CONTRACTS

     A majority of our pro forma revenue for the year ended December 31, 1998
was derived from contracts entered into through a competitive bidding process.
Public agencies, including the NYCTA, that solicit bids are generally required
to accept the lowest cost proposal. In some cases, the party that submitted the
low bid must first pass a technical qualification before being awarded a
project. Following the acceptance of a bid, we typically enter into a contract
with the customer. Our track construction and repair projects generally do not
involve long-term contracts.

     Many projects that are competitively bid require the company that is
awarded the project to post a bond, which varies according to the size of the
project. Each company has a bonding limit, which is based on the company's
working capital and work in progress. The bond provides the customer with
insurance in the event that the company is unable to complete the project.
Accordingly, the ability of each of the operating companies to bid on larger
projects had, prior to their acquisition by RailWorks, had been limited by their
ability to obtain the required bonding. The size of RailWorks, as compared to
the size of the individual operating companies, facilitated increases in the
bonding limits for each operating company thereby better positioning them to bid
on and undertake significantly larger construction and maintenance projects.
Management believes that the increased bonding capacity permits us to bid on and
undertake more projects than could smaller companies. See "Risk Factors -- Risks
Relating to RailWorks -- Our Fixed Price Contracts Expose us to Significant
Risks".

                                       48
<PAGE>   54

CUSTOMERS

     The following table lists our top four customers in each category on a pro
forma basis giving effect to the acquisitions of the Founding Companies and the
Acquired Companies as if they had occurred on January 1, 1998:

<TABLE>
<CAPTION>
             CLASS I RAILROADS                           SHORTLINE AND REGIONAL RAILROADS
- --------------------------------------------       --------------------------------------------
<S>                                                <C>
CSX Transportation                                 Alaska Railroad Corporation
Union Pacific Railroad                             Louisville & Indiana Railroad
Burlington Northern Santa Fe                       Indiana Southern Railroad Company
Canadian National Railway                          Indiana & Ohio Rail Systems
</TABLE>

<TABLE>
<CAPTION>
          TRANSIT AUTHORITIES AND                            INDUSTRIAL COMPANIES AND
             COMMUTER RAILROADS                               COMMERCIAL ENTERPRISES
- --------------------------------------------       --------------------------------------------
<S>                                                <C>
NYCTA (New York)                                   United States Steel
NYDOT (New York)                                   Bethlehem Steel
LAMTA (Los Angeles)                                Morse Diesel
CDOT Rail Division (Connecticut)                   Babcock & Wilcox
</TABLE>

COMPETITION

     The rail system services and products industry is competitive, and projects
are often awarded through competitive bidding. We compete with other rail system
construction, rehabilitation and maintenance companies, electrical contractors
and suppliers of products. Certain competitors have significantly greater
resources than we have, may provide a broad range of services and products, and
may have sufficient bonding capacity to undertake large projects. We compete on
the basis of our breadth of services and products, ability to take on large
projects and nationwide presence. Any inability of RailWorks to compete
successfully against existing and future competitors would have a material
adverse effect on our business, results of operations and financial condition.
Moreover, we may depend in part upon opportunities for consolidation in the rail
system services and products industry in order to execute effectively our
acquisition and vertical integration strategy. If our customers do not receive
our vertical integration strategy favorably, these customers have numerous
alternative sources of services and supply.

RISK MANAGEMENT AND SAFETY

     Because our business is labor intensive, workers' compensation is a
significant operating expense for us. We could be exposed to liability for the
acts or negligence of its employees who cause personal injury or damage while on
assignment, as well as claims of misuse of customer proprietary information or
theft of client property. We have adopted policies and procedures intended to
reduce our exposure to these risks.

     We maintain insurance against these risks with policy limits we consider
sufficient and consistent with industry standards. We have retained a risk
management professional who is responsible for claims management and the
establishment of appropriate reserves for the deductible portion of claims. We
hold regular meetings with the presidents of the operating companies at which
safety issues are discussed. We also conduct routine safety inspections of local
work sites.

EQUIPMENT AND FACILITIES

     We own and maintain specialized equipment used in rail construction,
rehabilitation, repair and maintenance. This equipment may be moved between job
sites and, consequently, we are seeking to increase the sharing of equipment
between the operating companies where it is appropriate and cost effective. For
example, during the winter months, the operating companies located in the
northern United States could relocate their equipment to the operating companies

                                       49
<PAGE>   55

located in the South. Each of the operating companies generally performs its own
equipment maintenance. We intend to manage our equipment through our equipment
leasing subsidiary, which will maintain a comprehensive database that tracks the
use of all of our equipment.

     Our corporate offices are in approximately 3,000 square feet of leased
space in a suburb of Baltimore, Maryland. In addition to our corporate offices,
we lease [37] and own [11] operating facilities. These facilities consist of
local offices, storage yards, distribution facilities, warehouses and wood
processing plants.

GOVERNMENT REGULATION

     Overview.  In addition to the environmental, safety and other regulations
generally applicable to all businesses, regulations that are administered by the
Surface Transportation Board, the successor to the Interstate Commerce
Commission ("ICC"), the FRA and by regulatory agencies impact our business in
the various states where we and our customers do business. Since 1980, there has
been a significant relaxation in regulations governing the sale, leasing or
other transfer of railroad properties, and this change has favorably affected
the operations of many of our customers. Various interests in the United States
have sought and continue to seek reimposition of government controls on the
railroad industry in areas deregulated in whole or in part since 1980, including
stricter rate regulation and more onerous labor protection conditions for rail
line transfers.

     Railroad Regulations.  The ICC Termination Act, enacted on December 29,
1995, eliminated the ICC as an independent agency and created the STB, a new
agency within the Department of Transportation which began functioning on
January 1, 1996. The ICC Termination Act changed the procedure and timing for
federal approval of rail projects, including abandonments, line sales, mergers,
rates and tariffs, simplifying and streamlining the abandonment process. The FRA
regulates railroad safety and equipment standards, including track maintenance
and train speed standards, special procedures for handling hazardous shipments,
locomotive and railcar inspection and repair requirements, operating practices
and crew qualifications. The Roadway Worker Protection Rules, promulgated by the
FRA, apply to rail contractors and establish certain safety criteria that must
be complied with on rail projects.

     TEA 21.  On June 9, 1998, the President signed TEA 21, the six-year surface
transportation program that represents a significant development in the federal
transit program. TEA 21, the largest infrastructure funding bill in U.S.
history, authorizes funding for transit in the amount of $42 billion through
2003. TEA 21 authorizes over 50 percent more than the 1991 Intermodal Surface
Transportation Efficiency Act, whose funding has expired.

     State Regulatory Agencies.  State regulatory agencies no longer have
authority to engage in economic regulation of railroads that are part of the
intrastate network. State and local governments generally retain jurisdiction
over local rail safety matters, such as the installation of grade crossings and
grade crossing warnings devices.

ENVIRONMENTAL MATTERS

     Our operations and properties are subject to environmental laws and
regulations relating to pollution and protection of the environment and public
and employee health and safety. The principal environmental regulatory
requirements applicable to our operations relate to the use of creosote to treat
lumber, and the generation, storage, transportation, treatment and disposal of
solid and hazardous wastes. We believe that our operations have all required
environmental permits and currently comply, in all material respects, with
applicable regulatory requirements.

     We have had environmental assessments performed for recent acquisitions.
Based on these reports and available information, we are not aware of any
significant environmental exposures or claims against us. However, the
historical and current uses of our facilities may have resulted in

                                       50
<PAGE>   56

spills or releases of various hazardous materials, which now, or in the future,
could require remediation. We also may be subject to requirements related to
remediation of hazardous materials that have been released into the environment
at properties that we own or operate, or that we owned or operated in the past
or at properties to which we send, or may have sent, hazardous materials for
treatment or disposal. Such remediation requirements generally are imposed
without regard to fault, and liability for any required environmental
remediation can be substantial.

EMPLOYEES

     As of June 30, 1999, we employed approximately 2,800 employees. We believe
that we have good relations with our employees.

     Approximately 66.9% of our employees are members of certain labor unions
and are employed pursuant to collective bargaining agreements. Some of the
operating companies are parties to collective bargaining agreements with the
International Brotherhood of Electrical Workers, Laborers' International Union
of North America, the International Union of Operating Engineers, United
Brotherhood of Carpenters and Joiners of America and the United Brotherhood of
Teamsters. Some of our customers hire only unionized labor. Our largest
collective bargaining agreement, covering 1,054 employees, expires in June 2001.
Except for a one-week work stoppage in Connecticut by the United Brotherhood of
Teamsters in June 1994, we have not experienced any work stoppages in the past
five years.

INFORMATION TECHNOLOGY SYSTEMS

     We are in the process of implementing integrated information technology
systems that will be utilized by each of the operating companies. These
information technology systems will be used for a variety of purposes, including
monitoring inventory levels, tracking the progress of construction projects and
integrating our financial, general ledger, payables and receivables functions.
In addition, we will network our corporate offices to the offices of our
operating companies and will have e-mail capability at all offices. We expect
that the required systems will be purchased and installed in 1999 and that our
expenditures for these systems will not be material to us. See "Management's
Discussion and Analysis of Financial Condition and Results of Operations --
Liquidity and Capital Resources." All of the new systems will be Year 2000
compatible. Until these new systems are fully operational, each of the operating
companies will continue using the information systems that they currently use.

LEGAL PROCEEDINGS

     From time to time, we may be involved in routine legal proceedings
incidental to the conduct of our business. In the opinion of management, the
litigation, individually or in the aggregate, to which we are currently a party,
is not likely to have a material adverse effect on our business, financial
condition and results of operations.

                                       51
<PAGE>   57

                               THE EXCHANGE OFFER

PURPOSE AND EFFECT OF THE EXCHANGE OFFER

     We sold the old notes on September 30, 1999 to First Union Capital Markets
pursuant to a purchase agreement. The initial purchaser subsequently sold the
old notes to:

     - "qualified institutional buyers" ("QIBs"), as defined in Rule 144A under
       the Securities Act, in reliance on Rule 144A, and to

     - persons in offshore transactions in reliance on Regulation S under the
       Securities Act.

     As a condition to the initial sale of the old notes, RailWorks and the
initial purchaser entered into a registration rights agreement. Pursuant to the
registration rights agreement, we agreed to

     - file a registration statement under the Securities Act with respect to
       the exchange notes with the SEC by November 13, 1999 and

     - use our reasonable best efforts to cause the registration statement to
       become effective under the Securities Act on or before           , 1999.

     We agreed to issue and exchange the new notes for all old notes validly
tendered and not validly withdrawn prior to the expiration of the exchange
offer. A copy of the registration rights agreement has been filed as an exhibit
to the registration statement, which includes this prospectus. The registration
statement is intended to satisfy some of our obligations under the registration
rights agreement and the purchase agreement.

     The term "holder" with respect to the exchange offer means any person in
whose name old notes are registered on the trustee's books or any other person
who has obtained a properly completed bond power from the registered holder, or
any person whose old notes are held of record by The Depository Trust Company
(the "Depositary" or "DTC") who desires to deliver such old note, by book-entry
transfer at DTC.

RESALE OF THE NEW NOTES

     We believe that you will be allowed to resell the new notes to the public
without registration under the Securities Act, and without delivering a
prospectus that satisfies the requirements of Section 10 of the Securities Act
if you can make the representations set forth above under "Prospectus
Summary -- The Exchange Offer -- Procedures for participating in the exchange
offer." However, if you intend to participate in a distribution of the new
notes, or you are an "affiliate" of RailWorks as defined under Rule 405 of the
Securities Act, you must comply with the registration requirements of the
Securities Act and deliver a prospectus, unless an exemption from registration
is otherwise available. You have to represent to RailWorks in the letter of
transmittal accompanying this prospectus that you meet these conditions
exempting you from the registration requirements.

     We base our view on interpretations by the staff of the SEC in no-action
letters issued to other issuers in exchange offers like ours. However, we have
not asked the SEC to consider this particular exchange offer in the context of a
no-action letter. Therefore, you cannot be sure that the SEC will treat it in
the same way it has treated other exchange offers in the past.

     A broker-dealer that has bought old notes for market-making or other
trading activities has to deliver a prospectus in order to resell any old notes
it has received for its own account in the exchange. This prospectus may be used
by a broker-dealer to resell any of its old notes. We have agreed in the
registration rights agreement to send this prospectus to any broker-dealer that
requests copies in the letter of transmittal for a period of up to 180 days
after the SEC declares the registration statement relating to this exchange
offer effective. See "Plan of Distribution" for more information regarding
broker-dealers.

                                       52
<PAGE>   58

     The exchange offer is not being made to, nor will we accept surrenders for
exchange from, holders of old notes in any jurisdiction in which this exchange
offer or the acceptance thereof would not be in compliance with the securities
or blue sky laws.

TERMS OF THE EXCHANGE OFFER

     General.  Based on the terms and conditions set forth in this prospectus
and in the letter of transmittal, we will accept any and all old notes validly
tendered and not validly withdrawn prior to 5:00 p.m., New York City time, on
the expiration date.

     Subject to the minimum denomination requirements of the new notes, we will
issue $1,000 principal amount of new notes in exchange for each $1,000 principal
amount of outstanding old notes validly tendered pursuant to the exchange offer
and not validly withdrawn prior to the expiration date. Holders may tender some
or all of their old notes pursuant to the exchange offer. However, old notes may
be tendered only in amounts that are integral multiples of $1,000 principal
amount.

     The form and terms of the new notes are the same as the form and terms of
the old notes except that:

     - the new notes will be registered under the Securities Act and, therefore,
       the new notes will not bear legends restricting the transfer the new
       notes,

     - the new notes shall not contain provisions for additional interest and

     - holders of the new notes will not be entitled to any of the registration
       rights of holders of old notes under the registration rights agreement,
       which rights will terminate upon the consummation of the exchange offer.

     The new notes will evidence the same indebtedness as the old notes, which
they replace, and the existing notes. The new notes will be issued under, and be
entitled to the benefits of, the same indenture that authorized the issuance of
the old notes and the existing notes. As a result, both the new notes, the old
notes and the existing notes will be treated as a single class of debt
securities under the indenture. The exchange offer does not depend upon any
minimum aggregate principal amount of old notes being surrendered for exchange.

     As of the date of this prospectus, $50,000,000 in aggregate principal
amount of the old notes is outstanding, all of which is registered in the name
of Cede & Co., as nominee for DTC. Solely for reasons of administration, we have
fixed the close of business on           , 1999 as the record date for the
exchange offer for purposes of determining the persons to whom this prospectus
and the letter of transmittal will be initially mailed. There will be no fixed
record date for determining holders of the old notes entitled to participate in
this exchange offer.

     As a holder of old notes, you do not have any appraisal or dissenters'
rights, or any other right to seek monetary damages in court under the Delaware
General Corporation Law or the indenture governing the notes. We intend to
conduct the exchange offer in accordance with the provisions of the registration
rights agreement and the applicable requirements of the Exchange Act and the
related rules and regulations of the SEC. Old notes that are not surrendered for
exchange in the exchange offer will remain outstanding and interest thereon will
continue to accrue.

     We will be deemed to have accepted validly surrendered old notes if and
when we give oral or written notice of our acceptance to the exchange agent. The
exchange agent will act as agent for the tendering holders of old notes for the
purpose of receiving the new notes from us.

     If you surrender old notes in the exchange offer, you will not be required
to pay brokerage commissions or fees. In addition, subject to the instructions
in the letter of transmittal, you will not have to pay transfer taxes for the
exchange of old notes. We will pay all charges and expenses

                                       53
<PAGE>   59

in connection with the exchange offer, other than certain applicable taxes
described under "--Fees and Expenses."

EXPIRATION DATE; EXTENSIONS; AMENDMENTS

     The "expiration date" is 5:00 p.m., New York City time, on                ,
1999, unless we extend the exchange offer, in which case the expiration date is
the latest date and time to which we extend the exchange offer.

     In order to extend the exchange offer, we will:

     - notify the exchange agent of any extension by oral or written
       communication;

     - issue a press release or other public announcement, which will report the
       approximate number of old notes deposited; such press release or
       announcement would be issued prior to 9:00 a.m., New York City time, on
       the next business day after the previously scheduled expiration date.
       During any extension of the exchange offer, all old notes previously
       surrendered and not withdrawn will remain subject to the exchange offer.

     We reserve the right:

     - to delay accepting any old notes,

     - to amend the terms of the exchange offer in any manner,

     - to extend the exchange offer, or

     - if, in the opinion of our counsel, the consummation of the exchange offer
       would violate any law or interpretation of the staff of the SEC, to
       terminate or amend the exchange offer by giving oral or written notice to
       the exchange agent.

     Any delay in acceptance, extension, termination or amendment will be
followed as soon as practicable by a press release or other public announcement.
If we amend the exchange offer in a manner that we determine constitutes a
material change, we will promptly disclose that amendment by means of a
prospectus supplement that will be distributed to the holders, and we will
extend the exchange offer for a period of time, depending upon the significance
of the amendment and the manner of disclosure to the holders, if the exchange
offer would otherwise expire during that period.

     We will have no obligation to publish, advertise, or otherwise communicate
any public announcement that we may choose to make, other than by making a
timely release to an appropriate news agency.

     In all cases, issuance of the new notes for old notes that are accepted for
exchange will be made only after timely receipt by the exchange agent of a
properly completed and duly executed letter of transmittal and all other
required documents. However, we reserve the absolute right to waive any
conditions of the exchange offer or any defects or irregularities in the
surrender of old notes. If we do not accept any surrendered old notes for any
reason set forth in the terms and conditions of the exchange offer or if you
submit old notes for a greater principal amount than you want to exchange, we
will return certificates for the unaccepted or non-exchanged old notes, or
substitute old notes evidencing the unaccepted portion, as appropriate, to you.
See "-- Return of Old Notes."

INTEREST ON THE NEW NOTES

     The new notes will accrue cash interest on the same terms as the old notes,
i.e., at the rate of 11 1/2% per year (using a 360-day year) from September 30,
1999, payable semi-annually in arrears on April 15 and October 15 of each year,
beginning on October 15, 1999. Old notes accepted for exchange will not receive
accrued interest thereon at the time of exchange.

                                       54
<PAGE>   60

However, each new note will bear interest from the most recent date to which
interest has been paid on the old notes or new notes, or if no interest has been
paid on the old notes or new notes, from September 30, 1999.

PROCEDURES FOR TENDERING OLD NOTES

     If you wish to surrender old notes you must:

     - complete and sign the letter of transmittal or a facsimile thereof,

     - have the signatures thereon guaranteed if required by the letter of
       transmittal, and

     - mail or deliver the letter of transmittal or facsimile, together with any
       corresponding certificate or certificates representing the old notes
       being surrendered -- or confirmation of a book-entry transfer of such old
       notes into the exchange agent's account at DTC pursuant to the book-entry
       procedures described below -- to the exchange agent at its address set
       forth in the letter of transmittal for receipt prior to the expiration
       date. If the certificate representing the old notes being tendered -- or
       the confirmation of a book-entry transfer, if applicable -- is not
       delivered to the exchange agent with the letter of transmittal, you must
       comply with the guaranteed delivery procedures described below. DELIVERY
       OF DOCUMENTS TO THE BOOK-ENTRY TRANSFER FACILITY IN ACCORDANCE WITH ITS
       PROCEDURE DOES NOT CONSTITUTE DELIVERY TO THE EXCHANGE AGENT.

     If you do not withdraw your surrender of old notes prior to the expiration
date, it will indicate an agreement between you and RailWorks that you have
agreed to surrender the old notes, in accordance with the terms and conditions
in the letter of transmittal.

     THE METHOD OF DELIVERY OF OLD NOTES, THE LETTER OF TRANSMITTAL AND ALL
OTHER REQUIRED DOCUMENTS TO THE EXCHANGE AGENT IS AT YOUR ELECTION AND RISK.
INSTEAD OF DELIVERY BY MAIL, YOU SHOULD USE AN OVERNIGHT OR HAND DELIVERY
SERVICE, PROPERLY INSURED, WITH RETURN RECEIPT REQUESTED. IN ALL CASES, YOU
SHOULD ALLOW SUFFICIENT TIME TO ASSURE DELIVERY TO THE EXCHANGE AGENT BEFORE THE
EXPIRATION DATE. DO NOT SEND ANY LETTER OF TRANSMITTAL OR OLD NOTES TO US. YOU
MAY REQUEST THAT YOUR BROKER, DEALER, COMMERCIAL BANK, TRUST COMPANY OR NOMINEE
EFFECT THE ABOVE TRANSACTIONS FOR YOU.

     If you are a beneficial owner of the old notes and your old notes and hold
those notes through a broker, dealer, commercial bank, trust company or other
nominee and you want to surrender your old notes, you should contact that
intermediary promptly and instruct it to surrender the old notes on your behalf.

     Generally, an eligible institution must guarantee signatures on a letter of
transmittal or a notice of withdrawal described below under "-- Withdrawal of
Tenders of Old Notes" unless

     - you tender your old notes as the registered holder, which term includes
       any participant in DTC whose name appears on a security listing as the
       owner of old notes,

     - you sign the letter of transmittal, and the new notes issued in exchange
       for your old notes to be issued in your name, or

     - you surrender your old notes for the account of an eligible institution.

     In any other case, the surrendered old notes must be endorsed or
accompanied by written instruments of transfer in form satisfactory to us and
duly executed by the registered holder. If the new notes or unexchanged old
notes are to be delivered to an address other than that of the registered holder
appearing on the security register for the old notes, an eligible institution
must guarantee the signature in the letter of transmittal. In the event that
signatures on a letter of

                                       55
<PAGE>   61

transmittal or a notice of withdrawal are required to be guaranteed, such
guarantee must be made by:

     - a member firm of a registered national securities exchange or of the
       National Association of Securities Dealers, Inc.,

     - a commercial bank or trust company having an office or correspondent in
       the United States, or an "eligible guarantor institution" as defined by
       Rule 17Ad-15 under the Exchange Act that is a member of one of the
       recognized signature guarantee programs identified in the letter of
       transmittal.

     Your surrender will be deemed to have been received as of the date when:

     - the exchange agent receives a properly completed and signed letter of
       transmittal accompanied by the old notes, or a confirmation of book-entry
       transfer of such old notes into the exchange agent's account at DTC, or

     - the exchange agent receives a notice of guaranteed delivery from an
       eligible institution. Issuances of new notes in exchange for old notes
       surrendered pursuant to a notice of guaranteed delivery or letter,
       telegram or facsimile transmission to similar effect by an eligible
       institution will be made only against submission of a duly signed letter
       of transmittal, and any other required documents, and deposit of the
       surrendered old notes, or confirmation of a book-entry transfer of such
       old notes into the exchange agent's account at DTC pursuant to the
       book-entry procedures described below.

     We will make the determination regarding all questions relating to the
validity, form, eligibility, including time of receipt, acceptance and
withdrawal of surrendered old notes, and our determination will be final and
binding on all parties.

     We reserve the absolute right to reject any and all old notes improperly
surrendered. We will not accept any old notes if our acceptance of them would,
in the opinion of our counsel, be unlawful. We also reserve the absolute right
to waive any defects, irregularities, or conditions of surrender as to any
particular old notes. Our interpretation of the terms and conditions of the
exchange offer, including the instructions in the letter of transmittal, will be
final and binding on all parties. Unless waived, you must cure any defects or
irregularities in connection with surrenders of old notes within the time we
will determine. Although we intend to notify holders of defects or
irregularities in connection with surrenders of old notes, neither we, the
exchange agent nor anyone else will incur any liability for failure to give such
notice. Surrenders of old notes will not be deemed to have been made until any
defects or irregularities have been cured or waived.

     We have no current plan to acquire any old notes that are not surrendered
in the exchange offer or to file a registration statement to permit resales of
any old notes that are not surrendered pursuant to the exchange offer. We
reserve the right in our sole discretion to purchase or make offers for any old
notes that remain outstanding after the expiration date. To the extent permitted
by law, we also reserve the right to purchase old notes in the open market, in
privately negotiated transactions or otherwise. The terms of any future
purchases or offers could differ from the terms of the exchange offer.

     Pursuant to the letter of transmittal, if you elect to surrender old notes
in exchange for new notes, you must exchange, assign and transfer the old notes
to us and irrevocably constitute and appoint the exchange agent as your true and
lawful agent and attorney-in-fact with respect to such surrendered old notes,
with full power of substitution, among other things, to cause the old notes to
be assigned, transferred and exchanged. By executing the letter of transmittal,
you make the representations and warranties set forth above under the heading
"Prospectus Summary -- The Exchange Offer -- Procedures for participating in the
exchange offer" to us. By executing the letter of transmittal you also promise
to, upon request, execute and deliver any additional

                                       56
<PAGE>   62

documents that we consider necessary to complete the transactions described in
the letter of transmittal.

     By surrendering old notes in the exchange offer, you will be telling us
that, among other things,

     - you have full power and authority to tender, sell, assign and transfer
       the old notes surrendered,

     - we will acquire good title to the old notes being surrendered, free and
       clear of all security interests, liens, restrictions, charges,
       encumbrances, conditional sale agreements or other obligations relating
       to their sale or transfer, and not subject to any adverse claim when we
       accept the old notes,

     - you are acquiring the new notes in the ordinary course of your business,

     - you are not engaging and do not intend to engage in a distribution of the
       new notes,

     - you have no arrangement or understanding with any person to participate
       in the distribution of the new notes,

     - you acknowledge and agree that if you are a broker-dealer registered
       under the Exchange Act or you are participating in the exchange offer for
       the purpose of distributing the new notes, you must comply with the
       registration and prospectus delivery requirements of the Securities Act
       in connection with a secondary resale of the new notes, and that you
       cannot rely on the position of the SEC's staff set forth in their
       no-action letters,

     - you understand that a secondary resale transaction described above and
       any resales of new notes obtained by you in exchange for old notes
       acquired by you directly from us should be covered by an effective
       registration statement containing the selling security holder information
       required by Item 507 or 508, as applicable, of Regulation S-K of the SEC,
       and

     - you are not an "affiliate", as defined in Rule 405 under the Securities
       Act, of RailWorks or any subsidiary guarantor, or, if you are an
       "affiliate," that you will comply with the registration and prospectus
       delivery requirements of the Securities Act to the extent applicable.

     If you are a broker-dealer and you will receive new notes for your own
account in exchange for old notes that were acquired as a result of
market-making activities or other trading activities, you will be required to
acknowledge in the letter of transmittal that you will deliver a prospectus in
connection with any resale of such old notes.

     Participation in the exchange offer is voluntary. You are urged to consult
your financial and tax advisors in making your decision on whether to
participate in the exchange offer.

RETURN OF OLD NOTES

     If any old notes are not accepted for any reason described here, or if old
notes are withdrawn or are submitted for a greater principal amount than you
want to exchange, the exchange agent will return those unaccepted or
non-exchanged old notes to the surrendering holder, or, in the case of old notes
surrendered by book-entry transfer, into the exchange agent's account at DTC,
unless otherwise provided in the letter of transmittal. The old notes will be
credited to an account maintained with DTC as promptly as practicable.

BOOK ENTRY TRANSFER

     The exchange agent will make a request to establish an account with respect
to the old notes at DTC for purposes of the exchange offer promptly after the
date of this prospectus. Any financial institution that is a participant in
DTC's system may make book-entry delivery of old

                                       57
<PAGE>   63

notes by causing DTC to transfer such old notes into the exchange agent's
account at DTC in accordance with DTC's procedures for transfer. However,
although delivery of old notes may be effected through book-entry transfer at
DTC, you have to deliver the letter of transmittal, or a facsimile thereof, with
any required signature guarantees and any other required documents to the
exchange agent at the address set forth in the letter of transmittal for its
receipt on or prior to the expiration date or pursuant to the guaranteed
delivery procedures described below.

GUARANTEED DELIVERY PROCEDURES

     If you wish to surrender your old notes and (1) your old notes are not
immediately available so that you can meet the expiration date deadline, (2) you
cannot deliver your old notes or other required documents to the exchange agent
prior to the expiration date, or (3) the procedure for book-entry transfer
cannot be completed on a timely basis, you may nonetheless participate in the
exchange offer if:

     - you surrender your notes through an eligible institution;

     - prior to the expiration date, the exchange agent receives from the
       eligible institution a properly completed and duly executed notice of
       guaranteed delivery substantially in the form provided by us, by
       telegram, telex, facsimile transmission, mail or hand delivery, showing
       the name and address of the holder, the name(s) in which the old notes
       are registered, the certificate number(s) of the old notes, if
       applicable, and the principal amount of old notes surrendered; the notice
       of guaranteed delivery must state that the surrender is being made by the
       notice of guaranteed delivery and guaranteeing that, within three Nasdaq
       National Market trading days after the expiration date, the letter of
       transmittal, or facsimile thereof, together with the certificate(s)
       representing such old notes, in proper form for transfer or a book-entry
       confirmation, and any other required documents, will be delivered by such
       eligible institution to the exchange agent, and

     - the properly executed letter of transmittal, as well as the
       certificate(s) representing all surrendered old notes, in proper form for
       transfer, or a book-entry confirmation, as the case may be, and all other
       documents required by the Letter of Transmittal are received by the
       exchange agent within three Nasdaq National Market trading days after the
       expiration date.

     Unless old notes are surrendered by the above-described method and
deposited with the exchange agent within the time period set forth above, we
may, at our option, reject the surrender. The exchange agent will send you a
notice of guaranteed delivery upon your request if you want to surrender your
old notes according to the guaranteed delivery procedures described above.

WITHDRAWAL OF TENDERS OF OLD NOTES

     Except as otherwise provided in this prospectus, you may withdraw your
surrender of old notes at any time prior to 5:00 p.m., New York City time, on
the expiration date.

     To withdraw a surrender of old notes in the exchange offer, the exchange
agent must receive a written or facsimile transmission notice of withdrawal at
its address set forth herein prior to 5:00 p.m., New York City time, on the
expiration date. Any notice of withdrawal must:

     - specify the name of the person having deposited the old notes to be
       withdrawn,

     - identify the old notes to be withdrawn, including the certificate number
       or numbers, if applicable, and principal amount of the old notes,

     - contain a statement that you are withdrawing your election to have such
       old notes exchanged,

                                       58
<PAGE>   64

     - be signed by the holder in the same manner as the original signature on
       the letter of transmittal by which the old notes were surrendered, and

     - specify the name in which any old notes are to be registered, if
       different from that of the person depositing the old notes. If old notes
       have been surrendered pursuant to the procedure for book-entry transfer,
       any notice of withdrawal must specify the name and number of the account
       at DTC.

     We, in our sole discretion, will make the final determination on all
questions regarding the validity, form, eligibility and time of receipt of
notices, and our determination shall bind all parties. Any old notes withdrawn
will be deemed not to have been validly surrendered for purposes of the exchange
offer and no new notes will be issued unless the old notes so withdrawn are
validly resurrendered. Properly withdrawn old notes may be resurrendered by
following one of the procedures described above under "-- Procedures for
Tendering Old Notes" at any time prior to the business day prior to the
expiration date. Any old notes that are not accepted for exchange will be
returned at no cost to the holder or, in the case of old notes surrendered by
book-entry transfer, into the exchange agent's account at DTC pursuant to the
book-entry transfer procedures described above, as soon as practicable after
withdrawal, rejection of surrender or termination of the exchange offer.

TERMINATION OF CERTAIN RIGHTS

     All registration rights under the registration rights agreement that
benefit the holders of the old notes will terminate when we consummate the
exchange offer. That includes all rights to receive additional interest in the
event of a registration default under the registration rights agreement. In any
event, we are under a continuing obligation, for a period of up to 180 days
after the SEC declares the registration statement effective, to keep the
registration statement effective and to provide copies of the latest version of
the prospectus to any broker-dealer that requests copies in the letter of
transmittal for use in a resale.

CONDITIONS OF THE EXCHANGE OFFER

     Notwithstanding any other term of the exchange offer, or any extension of
the exchange offer, we do not have to accept for exchange, or exchange new notes
for, any old notes, and we may terminate the exchange offer before acceptance of
the old notes, if:

          (1) any statute, rule or regulation has been enacted, or any action
     has been taken by any court or governmental authority that, in our
     reasonable judgment, seeks to or would prohibit, restrict or otherwise
     render consummation of the exchange offer illegal; or

          (2) any change, or any development that would cause a change, in our
     business or financial affairs has occurred that, in our sole judgment,
     might materially impair our ability to proceed with the exchange offer or a
     change that would materially impair the contemplated benefits to us of the
     exchange offer; or

          (3) a change occurs in the current interpretations by the staff of the
     SEC that, in our reasonable judgment, might materially impair our ability
     to proceed with the exchange offer.

     If we, in our sole discretion, determine that any of the above conditions
is not satisfied, we may:

     - refuse to accept any old notes and return all surrendered old notes to
       the surrendering holders,

     - extend the exchange offer and retain all old notes surrendered prior to
       the expiration date, subject to the holders' right to withdraw the
       surrender of the old notes, or

                                       59
<PAGE>   65

     - waive any unsatisfied conditions regarding the exchange offer and accept
       all properly surrendered old notes that have not been withdrawn. If this
       waiver constitutes a material change to the exchange offer, we will
       promptly disclose the waiver by means of a prospectus supplement that
       will be distributed to the registered holders, and we will extend the
       exchange offer for a period of time that we will determine, depending
       upon the significance of the waiver and the manner of disclosure to the
       registered holders, if the exchange offer would otherwise expire during
       that period of time.

EXCHANGE AGENT

     We have appointed First Union National Bank as exchange agent for the
exchange offer. Questions and requests for assistance, requests for additional
copies of this prospectus or of the letter of transmittal and requests for
notices of guaranteed delivery should be directed to the exchange agent at the
following address:

<TABLE>
<S>                                        <C>
      By Hand or Overnight Courier:            By Registered or Certified Mail:
        First Union National Bank                  First Union National Bank
 First Union Customer Information Center    First Union Customer Information Center
  Corporate Trust Operations -- NC1153       Corporate Trust Operations -- NC1153
 1525 West W. T. Harris Boulevard -- 3C3    1525 West W. T. Harris Boulevard -- 3C3
           Charlotte, NC 28288                        Charlotte, NC 28288
            Attn: Mike Klotz                           Attn: Mike Klotz
</TABLE>

          By Facsimile Transmission (for Eligible Institutions only):
                                 (704) 590-7628

                             Confirm by Telephone:
                                 (704) 590-7408

            For information with respect to the Exchange Offer, call
                       Mike Klotz of the Exchange Agent:
                                 (704) 590-7408

FEES AND EXPENSES

     We will bear the expenses of soliciting tenders. The principal solicitation
is being made by mail; however, additional solicitation may be made by telecopy,
telephone or in person by our officers and regular employees or by officers and
employees of our affiliates. No additional compensation will be paid to any such
officers and employees who engage in soliciting tenders.

     We have not retained any dealer-manager or other soliciting agent for the
exchange offer and will not make any payments to brokers, dealers or others
soliciting acceptance of the exchange offer. We will, however, pay the exchange
agent reasonable and customary fees for its services and will reimburse it for
related, reasonable out-of-pocket expenses. We may also reimburse brokerage
houses and other custodians, nominees and fiduciaries for reasonable
out-of-pocket expenses they incur in forwarding copies of this prospectus, the
letter of transmittal and related documents.

     We will pay any expenses you will incur in connection with the exchange
offer, including registration fees, fees and expenses of the exchange agent, the
transfer agent and registrar, accounting and legal fees and printing costs,
among others.

     We will pay all transfer taxes, if any, applicable to the exchange of the
old notes. If, however, new notes, or old notes for principal amounts not
surrendered or accepted for exchange, are to be delivered to, or are to be
issued in the name of, any person other than the registered holder of the old
notes surrendered, or if a transfer tax is imposed for any reason other than the

                                       60
<PAGE>   66

exchange, then the amount of any transfer taxes will be payable by the person
surrendering the notes. If you do not submit satisfactory evidence of payment of
such taxes or exemption with the letter of transmittal, the amount of those
transfer taxes will be billed directly to you.

CONSEQUENCES OF FAILURE TO EXCHANGE

     Old notes that are not exchanged will remain "restricted securities" within
the meaning of Rule 144(a)(3) of the Securities Act. Accordingly, they may not
be offered, sold, pledged or otherwise transferred except:

     - to us or to any of our subsidiaries, inside the United States to a
       qualified institutional buyer in compliance with Rule 144A,

     - inside the United States to an institutional accredited investor that,
       prior to such transfer, furnishes to the trustee a signed letter
       containing certain representations and agreements relating to the
       restrictions on transfer of the old notes, the form of which you can
       obtain from the trustee and, if such transfer is in respect of an
       aggregate principal amount of old notes at the time of transfer of less
       than $100,000, an opinion of counsel acceptable to us that the transfer
       complies with the Securities Act,

     - outside the United States in compliance with Rule 904 under the
       Securities Act,

     - pursuant to the exemption from registration provided by Rule 144 under
       the Securities Act, if available, or

     - pursuant to an effective registration statement under the Securities Act.

     The liquidity of the old notes could be adversely affected by the exchange
offer.

ACCOUNTING TREATMENT

     For accounting purposes, we will recognize no gain or loss as a result of
the exchange offer. We will amortize the expenses of the exchange offer and the
unamortized expenses related to the issuance of the old notes over the remaining
term of the notes.

                                       61
<PAGE>   67

                                   MANAGEMENT

EXECUTIVE OFFICERS, DIRECTORS AND KEY EMPLOYEES

     The following table sets forth certain information concerning each of the
executive officers, directors and key employees of the Company:

<TABLE>
<CAPTION>
EXECUTIVE OFFICERS AND DIRECTORS:            AGE                    POSITION
- ---------------------------------            ---                    --------
<S>                                          <C>   <C>
John G. Larkin.............................  43    Chairman of the Board, Chief Executive
                                                   Officer and Director
Michael R. Azarela.........................  41    Executive Vice President, Chief Financial
                                                   Officer and Director
Kenneth R. Burk............................  39    Executive Vice President, Chief Operating
                                                   Officer and Director
John Kennedy...............................  60    Vice President, Chief Operating Officer --
                                                   Track Contractors and Director
Scott D. Brace.............................  43    President of Railroad Service and Director
Ronald W. Drucker..........................  57    Director
R.C. Matney................................  61    Director
Donald P. Traviss..........................  54    Director

KEY EMPLOYEES:
Gene J. Cellini............................  42    Vice President, Tax
William R. Donley..........................  43    Vice President and Chief Operating
                                                   Officer -- Manufacturing and Supply
Harold C. Kropp, Jr........................  42    Vice President and Chief Accounting Officer
John P. Nuzzo..............................  51    Vice President, Risk Management
Robert W. Wolff............................  56    Vice President -- Western Track
                                                   Construction & Maintenance
</TABLE>

     John G. Larkin has been the Chairman of the Board and Chief Executive
Officer and a director of RailWorks since its inception in March 1998. For the
past 21 years, Mr. Larkin has worked in the transportation industry. From
December 1994 to February 1998, Mr. Larkin was a managing director of BT Alex.
Brown Incorporated, where he focused on the transportation industry. Prior
thereto, he served in various capacities at BT Alex. Brown Incorporated since
1987, including as an equity research analyst, focused exclusively on the
transportation industry. From 1986 to 1987, Mr. Larkin was Assistant Vice
President of CSX Transportation, Inc., where he was responsible for strategic
planning and analysis. From 1985 to 1986, Mr. Larkin was Director of Strategic
Planning of Seaboard System Railroad, Inc. From January 1979 through July of
1982, Mr. Larkin served as an engineering project coordinator for Day &
Zimmermann, Inc., an engineering and construction management firm. During this
period, Mr. Larkin was focused exclusively on railroad and rail transit design
and valuation projects. Mr. Larkin has a Master of Business Administration from
Harvard University and a Master of Science in Civil Engineering from the
University of Texas.

     Michael R. Azarela has served as the Executive Vice President, Chief
Financial Officer and a director of RailWorks since May 1998. Mr. Azarela was
Chief Executive Officer of L.K. Comstock from February 1998 to August 1998 and
Senior Vice President and Chief Financial Officer of CGI and Spie from May 1994
to February 1998, Chairman of the Board of Comstock Holdings, Inc. since
November 1996 and Vice President and Treasurer of L.K. Comstock from September
1992 to April 1994 and in various other positions at Comstock since June 1983.
Mr. Azarela is a certified public accountant and has a Master of Business
Administration from Iona College.

                                       62
<PAGE>   68

     Kenneth R. Burk joined RailWorks in May 1999 to serve as Executive Vice
President and Chief Operating Officer. He has been a director of RailWorks since
July 1999. For the past 17 years, Mr. Burk has worked in the construction
industry with significant emphasis on the transportation market. Prior to
joining RailWorks, Mr. Burk served as Senior Vice President and Chief Financial
Officer at Dick Corporation since July 1994. At Dick Corporation, Mr. Burk was a
member of the executive committee and had overall responsibility for finance and
administration and was the Chairman of corporate marketing, strategic planning
and merger and acquisition teams. Mr. Burk served as Vice President and Chief
Financial Officer with Tutor-Saliba Corporation from April 1989 to June 1994 and
held significant positions with Blount, Inc. from January 1983 to April 1989.
Mr. Burk has a Master of Business Administration degree from Pepperdine
University.

     John Kennedy has served as Vice President and a director of RailWorks since
its inception in March 1998, and Chief Operating Officer -- Track Contractors
since January 1999. From March 1998 to January 1999, he was Chief Operating
Officer of RailWorks. Mr. Kennedy has served as President of Kennedy Railroad, a
Founding Company, from June 1965 to February 1998, as President of Railcorp,
Inc. from April 1986 to February 1998 and as Principal of Alpha-Keystone from
January 1996 to February 1998. From 1980 to 1988, Mr. Kennedy served as an
Elected Member of the Pennsylvania House of Representatives.

     Scott D. Brace has served as a director of RailWorks and President of
Railroad Service since the IPO. Mr. Brace has served as Vice President of
Railroad Service since May 1989 and as President of Minnesota Railroad Service,
Inc. since May 1989. Mr. Brace is President-elect of the NRCMA.

     Ronald W. Drucker has been a director of RailWorks since June 1998. Mr.
Drucker has been an independent consultant on transportation and technology
issues since May 1992. From September 1966 to April 1992, Mr. Drucker served in
various capacities for CSX Corporation and certain of its subsidiaries,
including Chief Engineer, Senior Vice President for Transportation and President
and Chief Executive Officer of CSX Rail Transport. Additionally, from December
1989 to October 1997, he was the Chairman of the Board of Encompass, a global
logistics information partnership. Mr. Drucker also serves on the Board of
Directors of SunTrust Bank, North Florida, N.A., Landstar System, Inc.,
Jacksonville University, the National Defense Transportation Association and the
New World Symphony Orchestra.

     R.C. Matney has been a director of RailWorks since June 1998. Mr. Matney
has been President, Chairman of the Board of Directors and Chief Executive
Officer of Mark VII Transportation Company, Inc., since he founded the Company
in August 1987. From March 1985 to December 1988, he served as President of
American President Distribution Services, Inc. Prior thereto, Mr. Matney was the
President of the Surface Transportation Group of Brae Corporation from October
1980 to March 1985. Mr. Matney is a former member of the Intermodal Freight
Committee of the National Transportation Research Board.

     Donald P. Traviss has been a director of RailWorks since July 1999. Mr.
Traviss has been President and Chief Executive Officer of Envirotrol, Inc., a
private specialty chemicals and services company, since 1998. He was Chief
Executive Officer of Koppers Industries, Inc. from March 1996 to June 1997 and
was President, Chief Operating Officer and a non-voting Director of Koppers from
November 1994 to June 1997. Mr. Traviss had previously served as Vice President,
Refining and Petrochemicals at Universal Oil Products, from 1992 to 1994. Prior
to 1992, he was Vice President, Engineered Products Group. From 1985 to 1988,
Mr. Traviss served as Vice President, Engineering Products and Processes at
Union Carbide Corporation.

     Gene J. Cellini has served as Vice President, Tax of RailWorks since the
IPO. Prior thereto, Mr. Cellini was Vice President, Tax of Comstock and its
predecessor, Spie Group, Inc. and subsidiaries, from January 1985. Before
joining Comstock, Mr. Cellini served in various capacities for two international
public accounting firms, most recently as tax manager in public accounting.
                                       63
<PAGE>   69

     William R. Donley has served as Vice President -- Manufacturing and Supply
since April 1999. For the past 20 years, Mr. Donley has worked in the wood
treating industry serving the railroad, construction, and utility industries.
Before joining RailWorks, Mr. Donley worked for Koppers Industries Inc. in
various capacities including sales and marketing, distribution, operations and
procurement, general management, and most recently as Vice President -- Total
Quality, Productivity, and Strategic Planning. Koppers Industries is the largest
supplier of treated wood products, such as railroad crossties, to the railroad
industry. Mr. Donley has been a member of the American Wood Preservers
Association and the American Wood Preservers Institute. He served the American
Wood Preservers Institute as Chairman, Vice Chairman, and a member of their
Governmental Affairs Committee. Mr. Donley has a Bachelor of Science from
Pennsylvania State University and a Master of Business Administration from the
University of Pittsburgh Katz School of Business.

     Harold C. Kropp, Jr. has served as the Vice President and Chief Accounting
Officer of RailWorks since its inception in March 1998. Prior thereto, Mr. Kropp
was a valuation specialist at Larson, Kellett & Associates, P.C. from May 1996
to March 1998. Prior thereto, he was the Controller of Eck Realty Co. from
September 1994 to May 1996 and the Chief Financial Officer of Dame Media, Inc.
from April 1993 to September 1994. Mr. Kropp was employed by a large regional
certified public accounting firm from January 1983 to April 1993 where he
achieved the level of partner. Mr. Kropp is a certified public accountant
accredited in business valuation, a certified valuation analyst and a certified
management accountant.

     John P. Nuzzo has served as Vice President, Risk Management of RailWorks
since the IPO. Prior thereto, Mr. Nuzzo was Vice President Administration of
Comstock from 1992, where he was responsible for risk management.

     Robert D. Wolff has served as Vice President -- Western Track Construction
and Maintenance of RailWorks since January 1999. From 1977 to January 1999, Mr.
Wolff was the Chief Executive Officer of Mid West Railroad Construction &
Maintenance Corp. Mr. Wolff is a past President of the National Railroad
Construction and Maintenance Association, Inc.

     There are currently eight members of the board of directors. Three of the
directors, Messrs. Drucker, Matney and Traviss, are non-employee, independent
directors of RailWorks. The members of the RailWorks board of directors serve
staggered terms as follows: the terms of Messrs. Azarela, Burk and Traviss
expire at the 2000 Annual Meeting of Stockholders; the terms of Messrs. Larkin,
Brace and Matney expire at the 2001 Annual Meeting of Stockholders; and the
terms of Messrs. Kennedy and Drucker expire at the 2002 Annual Meeting of
Stockholders. The RailWorks board of directors has an audit committee and a
compensation committee that each consist of Messrs. Drucker, Matney and Traviss,
the three independent directors.

DIRECTOR COMPENSATION

     Directors who are not currently receiving compensation as officers,
employees or consultants of RailWorks are entitled to receive fees of $2,000 per
board meeting attended and $1,000 per committee meeting attended, plus
reimbursement of expenses for each meeting of the board of directors and each
committee meeting that they attend in person. In addition, each non-employee
director was granted options to purchase 10,000 shares of common stock upon
consummation of the IPO. See "-- 1998 Stock Incentive Plan".

COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

     During 1998, the members of the Compensation Committee were Messrs.
Drucker, Matney and Traviss, RailWorks's three independent directors. During
1998, neither member of the Compensation Committee engaged in any transactions
with RailWorks.

                                       64
<PAGE>   70

EXECUTIVE COMPENSATION

     The following table sets forth the aggregate compensation earned by the
Chief Executive Officer and the executive officers (collectively, the "Named
Executive Officers") for services rendered in all capacities to the Company
during the year ended December 31, 1998.

<TABLE>
<CAPTION>
                                                                    LONG-TERM
                                                                   COMPENSATION
                                                     ANNUAL           AWARDS
                                                  COMPENSATION     ------------
                                                -----------------   RESTRICTED     ALL OTHER
         NAME                  POSITION          SALARY    BONUS   STOCK AWARDS   COMPENSATION
         ----                  --------         --------  -------  ------------   ------------
<S>                     <C>                     <C>       <C>      <C>            <C>
John G. Larkin........  Chief Executive         $275,000       --    678,299             --
                        Officer
Michael R. Azarela....  Executive Vice           200,000  $23,000    150,735        $85,001(1)
                        President, Chief
                        Financial Officer
Kenneth R. Burk(2)....  Executive Vice                --       --         --             --
                        President and Chief
                        Operating Officer
John Kennedy..........  Vice President, Chief    100,000       --    150,735             --
                        Operating Officer --
                        Track Contractors
Peter Alan Pasch(3)...  Vice President, Chief    200,000   23,000         --         21,200(4)
                        Operating Officer --
                        Transit
</TABLE>

- ---------------

(1) Represents $39,801 in moving expenses that were paid by the Company, $2,000
    in automobile allowance, $1,000 in life insurance premiums, $34,000 in FICA
    and $8,200 in 401(k) contributions.
(2) Mr. Burk joined the Company in May 1999 and is expected to be a Named
    Executive Officer during the year ending December 31, 1999.
(3) Resigned in June 1999.
(4) Represents $3,000 in automobile allowance, $2,000 in life insurance
    premiums, $8,000 in FICA and $8,200 in 401(k) contributions.

EMPLOYMENT AGREEMENTS

     RailWorks has employment agreements with each of Messrs. Larkin, Azarela
and Kennedy. The agreements expire on December 31, 2001, that date is the
"Expiration Date", and will continue on a year-to-year basis, unless terminated
by either party. Each agreement is terminable by RailWorks with or without cause
or upon the employee's death or inability to perform his duties on account of a
disability for a period of six months during any consecutive 12 month period or
by the employee. The agreements provide for annual base salaries of $325,000,
$275,000 and $100,000 for Messrs. Larkin, Azarela and Kennedy, respectively, and
provide that these executive officers will receive 5%, 2% and 1.5% respectively,
of RailWorks's first bonus pool, called the "First Bonus Pool", and 33.3%, 13.3%
and 10.0%, respectively, of RailWorks's second bonus pool, called the "Second
Bonus Pool". The First Bonus Pool consists of 10% of RailWorks's pre-tax
profits, and the Second Bonus Pool consists of 15% of the amount by which
RailWorks's net income exceeds certain benchmarks. In addition, the agreements
provided for the grant of shares of restricted stock and options to purchase
common stock, as described under the heading "-- Executive Compensation." The
agreements provide further that the employee may request a loan from RailWorks
in the amount of the income taxes due on stock granted to the employee under his
employment agreement. These loans are collateralized only by the stock granted
and the employee otherwise has no personal obligation to repay the loan. The
term of

                                       65
<PAGE>   71

these loans are five years, requiring annual interest payments; however, the
term is accelerated following termination of employment. Each agreement also
contains noncompetition, nonsolicitation and confidential information
provisions.

     RailWorks also has an employment agreement with Mr. Burk. The agreement
expires on May 10, 2002 and will continue on a year-to-year basis, unless
terminated by either party. The agreement is terminable by RailWorks with or
without cause or upon the employee's death or inability to perform his duties on
account of a disability for a period of six months during any consecutive
twelve-month period, or by the employee. The agreement provides for an annual
base salary of $275,000 and provides that he will receive, as a bonus for each
fiscal year during which the agreement is in force, .3% of the net income of
RailWorks before income taxes and bonuses (or, for the year ending December 31,
1999, $100,000, if .3% of such net income is less than $100,000), and for the
grant of options to purchase common stock. The agreement also contains
noncompetition, nonsolicitation and confidential information provisions.

     RailWorks has also entered into employment agreements with the key
employees and certain employees of each Founding Company and Acquired Company.
The agreements generally expire on the second anniversary of the closing of the
Company's acquisition of the employee's company. On and after such date, the
agreements automatically renew for successive one-year terms until either party
gives 90 days written notice of termination of the agreement, each termination
date is called the "Expiration Date". Each agreement is terminable by RailWorks
with or without cause or upon the employee's death or inability to perform his
duties on account of a disability for a period of six months during any
consecutive 12-month period or by the employee. Each agreement provides for an
annual base salary and provides that the salary will be adjusted after the
initial term of the agreement to reflect the employee's duties and
responsibilities. Further, each employee is entitled to a portion of the First
Bonus Pool and the Second Bonus Pool. As a group, the owners of the Founding
Companies and Acquired Companies are entitled to an aggregate of 40% of the
First Bonus Pool and 33.3% of the Second Bonus Pool.

1998 STOCK INCENTIVE PLAN

     The RailWorks board of directors has adopted, and the RailWorks
stockholders have approved, the RailWorks 1998 Stock Incentive Plan. There are
2,000,000 shares of common stock reserved for issuance under the Incentive Plan
and, as of June 30, 1999, there were                options outstanding under
the Incentive Plan. The purpose of the Incentive Plan is to provide executive
officers, directors and key employees with additional incentives by enabling
such persons to increase their ownership interests in RailWorks. Individual
awards under the Incentive Plan may take the form of one or more of: (1) either
incentive stock options ("ISOs") or non-qualified stock options ("NQSOs," and
together with ISOs, "Options"); (2) stock appreciation rights ("SARs"); (3)
restricted or deferred stock; (4) dividend equivalents; (5) bonus shares and
awards in lieu of RailWorks obligations to pay cash compensation; and (6) other
awards the value of which is based in whole or in part upon the value of the
common stock. Upon a change of control of RailWorks, as defined in the Incentive
Plan, some of the conditions and restrictions relating to an award with respect
to the exercisability or settlement of such award will lapse.

     The Compensation Committee administers the Incentive Plan and generally
selects the individuals who receive awards. In addition, the Audit Committee
determines the type and number of awards and the terms and conditions of those
awards (including exercise prices, vesting and forfeiture conditions,
performance conditions and periods during which awards will remain outstanding).
The Incentive Plan also provides that no participant may be granted in any
calendar year awards which may be settled by delivery of more than 100,000
shares and limits payments under cash-settled awards in any calendar year to an
amount equal to the fair market value of that number of shares.

                                       66
<PAGE>   72

     RailWorks generally will be entitled to a tax deduction equal to the amount
of compensation realized by a participant through awards under the Incentive
Plan, except that (1) no deduction is permitted in connection with ISOs if the
participant holds the shares acquired upon exercise for the required holding
periods, and (2) deductions for some awards could be limited under the $1.0
million deductibility cap of Section 162(m) of the Internal Revenue Code of
1986, as amended (the "Code"). This limitation, however, should not apply to
awards granted under a plan during a grace period that expires in August 2001,
and should not apply to certain options, SARs and performance-based awards
granted thereafter if RailWorks complies with certain requirements under Section
162(m) of the Code.

     The Incentive Plan will remain in effect until terminated by the board of
directors. The Incentive Plan may be amended by the board of directors without
the consent of the stockholders of RailWorks, except that any amendment,
although effective when made, will be subject to stockholder approval if
required by any federal or state law or regulation or by the rules of any stock
exchange or automated quotation system on which the common stock may then be
listed or quoted.

              CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS

     Set forth below is a description of certain transactions and relationships
between RailWorks and certain officers, directors and principal stockholders of
the Company. In addition, set forth below is certain information regarding
transactions and relationships prior to the IPO between certain of the Founding
Companies and their respective officers, directors and principal stockholders.

GENERAL

     Prior to the IPO, certain of the Founding Companies engaged in transactions
with companies that are under common ownership, which transactions are described
below. Since the IPO, transactions between RailWorks and its officers, directors
or principal stockholders must be approved by a majority of the disinterested
members of the board of directors.

ACQUISITION OF CERTAIN FOUNDING COMPANIES

     On August 4, 1998, concurrently with the consummation of the IPO, RailWorks
acquired all of the outstanding stock of the Founding Companies. Certain of the
directors and executive officers of RailWorks were owners of certain of the
Founding Companies. These companies, and the consideration their owners received
in the acquisitions, are set forth below:

<TABLE>
<CAPTION>
                                                                CONSIDERATION
                                                         ---------------------------
                                                                         SHARES OF
FOUNDING COMPANY                                             CASH       COMMON STOCK
- ----------------                                         -------------  ------------
<S>                                                      <C>            <C>
Comstock Holdings, Inc.................................  $13.1 million   2,959,291
Kennedy Railroad Builders, Inc.........................  2.8 million       386,795
Merit Railroad Contractors, Inc........................  2.0 million       292,456
Railroad Service, Inc..................................  3.5 million       454,680
U.S. Trackworks, Inc...................................  1.3 million       305,609
</TABLE>

     Michael R. Azarela, former Chief Executive Officer of Comstock, is
Executive Vice President and Chief Financial Officer of RailWorks. John Kennedy,
then President of Kennedy, is the Vice President and Chief Operating
Officer -- Track Contractors and a director of RailWorks. Upon completion of the
IPO, Scott D. Brace, President of Railroad Service became a director of
RailWorks. Each of Messrs. Azarela, Kennedy and Brace entered into a two-year
employment agreement with RailWorks in connection with the acquisition of the
Founding Companies.

                                       67
<PAGE>   73

COMSTOCK

     Effective January 1, 1997, Comstock acquired all of the outstanding stock
of L.K. Comstock from Spie for $5.0 million plus a contingent payment of up to
$5.0 million based on 1997, 1998 and 1999 pre-tax income. In May 1998, Comstock
agreed to pay Spie $1.6 million in lieu of such contingent payment, which amount
was paid by RailWorks on September 8, 1998.

     In connection with the Comstock Acquisition, Comstock, L.K. Comstock, Spie
and CGI entered into an Indemnity and Cooperation Agreement pursuant to which
L.K. Comstock issued a contingent promissory note to Spie in the amount of
approximately $14.9 million (the "Contingent Note") collateralized by any
proceeds derived from three projects (the "Spie Projects") for which Comstock
had not been fully paid. Each of these projects is the subject of a lawsuit in
which L.K. Comstock seeks payment of a portion of the contract price. In each
proceeding, the defendant has filed a counterclaim against L.K. Comstock for
breach of contract. Spie is obligated to indemnify L.K. Comstock for all losses
and expenses incurred with respect to these lawsuits. The Contingent Note is
payable only from amounts collected by L.K. Comstock with respect to the Spie
Projects prior to April 3, 2007, at which time the Contingent Note will be
canceled. As such, Spie and any successor or creditor may not look to any other
assets of L.K. Comstock or RailWorks to satisfy the Contingent Note. Because
there is a right of offset for any gains or losses incurred in connection with
the Spie Projects, neither the Contingent Note nor the right to receive proceeds
from the Spie Projects is reflected in Comstock's financial statements, the
RailWorks Consolidated Financial Statements or the RailWorks Pro Forma Financial
Statements.

LOANS TO OFFICERS

     Pursuant to the employment agreements, RailWorks made loans to certain of
its executive officers to cover income taxes due with respect to grants of
restricted common stock. These loans, which are due in full on August 4, 2003,
were in the following principal amounts: John G. Larkin -- $3,982,245; Michael
R. Azarela -- $876,236; and John Kennedy -- $834,047.

                                       68
<PAGE>   74

                             PRINCIPAL STOCKHOLDERS

     The following table sets forth certain information regarding the beneficial
ownership of the common stock as of October 15, 1999 by: (1) each Named
Executive Officer of RailWorks; (2) each director of RailWorks; and (3) all of
the RailWorks directors and executive officers as a group. Unless otherwise
provided, all persons listed have an address c/o RailWorks's principal executive
offices and have sole voting and investment power with respect to their shares
unless otherwise indicated.

<TABLE>
<CAPTION>
                                                                SHARES BENEFICIALLY
                                                                       OWNED
                                                              ------------------------
BENEFICIAL OWNER                                                NUMBER      PERCENT(1)
- ----------------                                              -----------   ----------
<S>                                                           <C>           <C>
John G. Larkin..............................................    [828,309]      [5.9]
Michael R. Azarela..........................................    [551,747]      [4.0]
Kenneth R. Burk(2)..........................................     [50,000]        [*]
John Kennedy................................................    [404,021]      [2.9]
Scott D. Brace..............................................    [200,093]      [1.4]
Ronald W. Drucker(3)........................................      [5,500]        [*]
R.C. Matney(4)..............................................      [4,500]        [*]
Donald P. Traviss...........................................         [--]        [*]
All executive officers and directors as a group(8
  persons)(5)...............................................  [2,044,170]       14.3
Deutsche Bank Securities Inc.(6)............................  [2,003,385]     [13.1]%
</TABLE>

- ---------------

  * Less than one percent

(1) Based on an aggregate of [14,255,706] shares of common stock issued and
    outstanding as of October 15, 1999 plus, for each person, (a) the number of
    shares of common stock issuable upon conversion of shares of Series A
    convertible preferred stock beneficially owned by such person, and (b) the
    number of shares of common stock issuable upon exercise of outstanding stock
    options that are or will become exercisable prior to                , 1999.
(2) Represents [50,000] shares issuable upon exercise of outstanding options.
(3) Includes [2,500] shares issuable upon exercise of outstanding options.
(4) Includes [2,500] shares issuable upon exercise of outstanding options.
(5) Represents (a) [1,989,170] shares beneficially owned by such directors and
    executive officers, and (b) [54,500] shares issuable upon exercise of
    outstanding stock options that are or will become exercisable prior to
              , 1999.
(6) Represents (a) [633,385] shares of common stock of RailWorks and (b)
    [13,700] shares of Series A convertible preferred stock. Each share of
    Series A convertible preferred stock is convertible at any time into 100
    shares of common stock, subject to some exceptions. Conversion is prohibited
    if, after the conversion, Deutsche Bank Securities Inc. (formerly BT Alex.
    Brown Incorporated) would own 5% or more of the RailWorks common stock. The
    address of Deutsche Bank Securities Inc. is 130 Liberty Street, New York,
    New York 10006.

                                       69
<PAGE>   75

                          DESCRIPTION OF CAPITAL STOCK

     The authorized capital stock of RailWorks consists of 100,000,000 shares of
common stock, par value $.01 per share and 10,000,000 shares of preferred stock,
par value $.01 per share. The following summary description of the capital stock
of RailWorks is a summary only and is subject to the detailed provisions of, and
qualified in its entirety by reference to, the Company's Certificate of
Incorporation and Bylaws of RailWorks, copies of which are available from
RailWorks by writing or calling our principal executive offices, and to the
applicable provisions of the Delaware General Corporation Law ("DGCL").

COMMON STOCK

     The holders of common stock are entitled to one vote for each share held of
record on all matters submitted to a vote of the stockholders. Subject to the
rights of any holders of preferred stock, holders of common stock are entitled
to receive ratably such dividends as may be declared by the board of directors
out of funds legally available. In the event of a liquidation, dissolution or
winding up of the Company, holders of the common stock are entitled to share
ratably in the distribution of all assets remaining after payment of
liabilities, subject to the rights of any holders of preferred stock of
RailWorks. The holders of common stock have no preemptive rights to subscribe
for additional shares of RailWorks and no right to convert their common stock
into any other securities. In addition, there are no redemption or sinking fund
provisions applicable to the common stock. All of the outstanding shares of
common stock are fully paid and nonassessable.

PREFERRED STOCK

     RailWorks has 10,000,000 shares of authorized preferred stock. On October
8, 1998, the Company issued 13,700 shares of preferred stock, designated Series
A convertible preferred stock, to Deutsche Bank Securities Inc. (formerly BT
Alex. Brown Incorporated), in exchange for 1,370,000 shares of common stock. The
stock exchange reduced Deutsche Bank Securities Inc.'s common stock holdings to
satisfy the Bank Holding Company Act (the "BHCA"). The BHCA requires that a bank
holding company own less than 5% of the voting stock of a publicly-traded
corporation. Each share of Series A convertible preferred stock is convertible
into 100 shares of common stock; however, subject to certain exceptions allowed
by the BHCA, conversion is prohibited if, after the conversion, Deutsche Bank
Securities Inc. would own 5% or more of the common stock. Shares of Series A
convertible preferred stock carry no voting rights, share ratably with shares of
common stock as to dividend distributions as if shares of Series A convertible
preferred stock had been converted to shares of common stock and have a
liquidation preference over shares of common stock.

     The board of directors is authorized to provide for the issuance of
additional classes and series of preferred stock out of remaining undesignated
shares, and the board of directors may establish the voting powers,
designations, preferences and relative, participating, optional or other special
rights and qualifications, limitations or restrictions of any such additional
class or series of preferred stock, including the dividend rights, dividend
rate, terms of redemption, redemption price or prices, conversion rights and
liquidation preferences of the shares constituting any series, without any
further vote or action by the stockholders of the Company. The issuance of
preferred stock by the board of directors could have the effect of making it
more difficult for a third party to acquire a majority of the outstanding voting
stock of RailWorks, thereby delaying, deferring or preventing a change in
control of RailWorks.

                                       70
<PAGE>   76

CERTAIN PROVISIONS OF DELAWARE LAW AND THE COMPANY'S CERTIFICATE OF
INCORPORATION AND BYLAWS

     We are subject to the provisions of Section 203 of the DGCL. Section 203
prohibits a publicly held Delaware corporation from engaging in a "business
combination" with an "interested stockholder" for a period of three years after
the date of the transaction in which the person became an interested
stockholder, unless the business combination is approved in a prescribed manner.
A "business combination" includes a merger, asset sale or other transaction
resulting in a financial benefit to the interested stockholder. Subject to
certain exceptions, an "interested stockholder" is a person who, together with
affiliates and associates, owns or within three years prior to the proposed
business combination has owned 15% or more of the corporation's voting stock.

     Our Certificate of Incorporation provides that liability of directors of
RailWorks is eliminated to the fullest extent permitted under Section 102(b)(7)
of the DGCL. As a result, no director of RailWorks will be liable to RailWorks
or its stockholders for monetary damages for breach of fiduciary duty as a
director, except for liability: (i) for any breach of the director's duty of
loyalty to RailWorks or its stockholders; (ii) for acts or omissions not in good
faith or which involve intentional misconduct or a knowing violation of law;
(iii) for any willful or negligent payment of an unlawful dividend, stock
purchase or redemption; or (iv) for any transaction from which the director
derived an improper personal benefit.

     Our Bylaws provide that the board of directors be elected to staggered
one-, two-and three-year terms and, thereafter, for successive three-year terms.
In addition, directors may only be removed from office for cause. These
provisions of the Bylaws could discourage potential acquisition proposals and
could delay or prevent a change in control of RailWorks.

                         DESCRIPTION OF CREDIT FACILITY

     Since the IPO, cash for acquisitions and working capital has been financed
by funds generated from operations, together with borrowings under the Company's
three-year, $105 million senior secured revolving credit facility with Bank of
America, N.A. ("B of A"). The credit facility matures on August 5, 2002, subject
to acceleration upon the occurrence of an event of default or a change in
control. Of the $105 million senior secured revolving credit facility, $90
million can be borrowed by RailWorks (the "U.S. credit facility"), and $15
million can be borrowed by Canadian subsidiaries of RailWorks (the "Canadian
credit facility"). Borrowings under the credit facility bear interest, at our
option, at an interest rate equal to (1) LIBOR plus the applicable margin for
LIBOR loans, which ranges from 125 basis points to 250 basis points based on the
ratio of Funded Debt to EBITDA (as such terms are defined in the credit
facility), (2) the Base Rate (defined as the higher of (a) the NationsBank prime
rate and (b) the Federal Funds rate plus 50 basis points) plus up to 100 basis
points based on the ratio of Funded Debt to EBITDA or (3) a rate negotiated with
B of A at the time of borrowing for up to $5 million of the U.S. credit facility
available to RailWorks as a swing line. In addition, borrowings under the
Canadian credit facility can be funded through bankers' acceptances, issued at a
discount to face value. As of June 30, 1999, borrowings under the credit
facility bore interest at a weighted average interest rate of 7.45% per annum.

     Borrowings under the U.S. credit facility are secured by a first priority
lien on all capital stock of our U.S. subsidiaries, 66% of the voting capital
stock of our non-U.S. subsidiaries, all non-voting capital stock of our non-U.S.
subsidiaries and all of our accounts receivable and the accounts receivable of
our U.S. subsidiaries. Repayment of the U.S. credit facility is guaranteed by
all of our U.S. subsidiaries. Borrowings under the Canadian credit facility are
secured by a first priority lien on all capital stock of our U.S. and non-U.S.
subsidiaries and all accounts receivable of RailWorks and its subsidiaries,
other than Canadian subsidiaries, and by a second priority lien on all accounts
receivable of the Canadian subsidiaries. Repayment of the Canadian credit
facility
                                       71
<PAGE>   77

is guaranteed by RailWorks and all of its subsidiaries. The credit facility
contains usual and customary events of default as well as financial covenants
for RailWorks regarding, among other things, debt coverage, net worth and
earnings. The credit facility also contains covenants and provisions that
restrict, among other things, the ability of RailWorks and its subsidiaries to:
(1) incur additional indebtedness and liens on their property, (2) merge or
consolidate with or acquire another person or engage in other fundamental
changes, (3) make certain acquisitions and investments, (4) make dividend and
certain other payments and (5) engage in certain sales, sale-leasebacks and
certain dispositions of property. As of the date of this prospectus, we were in
compliance with all covenants under the credit facility.

                                       72
<PAGE>   78

                          DESCRIPTION OF THE NEW NOTES

     The form and terms of the new notes and the old notes are identical in all
material respects, except that transfer restrictions and registration rights
applicable to the old notes do not apply to the new notes.

     The old notes were, and the new notes will be, issued under the same
indenture as the existing notes, which is dated as of April 7, 1999, among
RailWorks, the Subsidiary Guarantors and First Union National Bank, as trustee.
The following description of the material provisions of the indenture is a
summary only. It does not include all of the provisions of the indenture. We
urge you to read the indenture because it defines your rights. The terms of the
notes include those stated in the indenture and those made part of the indenture
by reference to the Trust Indenture Act of 1939, which will govern the indenture
upon effectiveness of the registration statement that includes this prospectus.
A copy of the indenture may be obtained from RailWorks upon request. You can
find definitions of certain capitalized terms used in this description under
"-- Certain Definitions." For purposes of this section, references to "we,"
"our," "us" and "RailWorks" include only RailWorks Corporation and not its
subsidiaries. References in this section to the "notes" are references to both
the old notes and the new notes.

     The notes are general unsecured obligations of RailWorks, and rank
subordinate in right of payment to all Senior Debt of RailWorks.

     We will issue the new notes in fully registered form in denominations of
$1,000 and integral multiples. The trustee will initially act as paying agent
and registrar for the new notes. The new notes may be presented for registration
or transfer and exchange at the offices of the registrar. We may change any
paying agent and registrar without notice to note holders. We will pay
principal, and premium, if any, on the notes at the trustee's corporate office
in New York, New York. At our option, interest may be paid at the trustee's
corporate trust office or by check mailed to the registered address of holders.
Any notes that remain outstanding after the completion of the exchange offer,
together with the new notes issued in connection with the exchange offer, will
be treated as a single class of securities under the indenture.

PRINCIPAL, MATURITY AND INTEREST

     The notes are limited in aggregate principal amount to $250.0 million, of
which $125.0 million in aggregate principal amount was issued on April 7, 1999,
which we refer to as the "existing notes", and $50.0 million in aggregate
principal amount was issued on September 30, 1999. The notes mature on April 15,
2009. Additional notes may be issued from time to time, subject to the
limitations set forth under "-- Certain Covenants -- Limitation on Incurrence of
Additional Indebtedness" and restrictions contained in the Credit Agreement. Any
additional notes will be part of the same issue as the existing notes, the old
notes and the new notes and will vote on all matters with the existing notes,
the old notes and the new notes. Unless otherwise indicated, references in this
section to the notes include the existing notes but do not include the
additional notes. No offering of any such additional notes is being or shall be
deemed to be made by this prospectus. In addition, there can be no assurance as
to when or whether RailWorks will issue any such additional notes or as to the
aggregate principal amount of any such additional notes.

     Interest on the notes accrues at the annual rate of 11 1/2% and is payable
semi-annually in cash on each April 15 and October 15 commencing on October 15,
1999, to the persons who are registered holders at the close of business on the
April 1 and October 1 immediately preceding the applicable interest payment
date. Interest on the notes accrues from the most recent date to which interest
has been paid or, if no interest has been paid, from and including September 30,
1999. Interest is computed on the basis of a 360-day year comprised of twelve
30-day months.

     The notes are not entitled to the benefit of any mandatory sinking fund.

                                       73
<PAGE>   79

REDEMPTION

     Optional Redemption.  Except as described below, the notes are not
redeemable before April 15, 2004. After April 15, 2004, we may redeem the notes
at our option, in whole or in part, upon not less than 30 nor more than 60 days'
notice, at the redemption prices expressed as percentages of the principal
amount as described in the following table, plus accrued and unpaid interest to
the redemption date, if redeemed during the twelve-month period commencing on
April 15 of the years indicated in the table set forth below:

<TABLE>
<CAPTION>
YEAR                                                          PERCENTAGE
- ----                                                          ----------
<S>                                                           <C>
2004........................................................   105.750%
2005........................................................   103.833%
2006........................................................   101.917%
2007 and thereafter.........................................   100.000%
</TABLE>

     In addition, we must pay accrued and unpaid interest on the notes we
redeem.

     Optional Redemption.  Except as described below, the notes are not
redeemable before April 15, 2004. After April 15, 2004, we may redeem the notes
at our option, in whole or in part, upon not less than 30 nor more than 60 days'
notice, at the redemption prices expressed as percentages of the principal
amount as described in the following table, plus accrued and unpaid interest to
the redemption date, if redeemed during the twelve-month period beginning on
April 15 of the years indicated in the table below:

<TABLE>
<CAPTION>
YEAR                                                          PERCENTAGE
- ----                                                          ----------
<S>                                                           <C>
2004........................................................   105.750%
2005........................................................   103.833%
2006........................................................   101.917%
2007 and thereafter.........................................   100.000%
</TABLE>

     In addition, we must pay accrued and unpaid interest on the notes we
redeem.

     Optional Redemption upon Equity Offerings.  At any time, which may be more
than once, on or prior to April 15, 2002, we may, at our option, use the net
cash proceeds of one or more Equity Offerings to redeem up to 35% of the
principal amount of the notes issued under the indenture at a redemption price
of 111.500% of the principal amount of such notes plus accrued and unpaid
interest, if any, to the redemption date; provided that:

          (1) at least 65% of the principal amount of notes issued under the
     indenture remains outstanding immediately after any such redemption; and

          (2) we make such redemption not more than 120 days after the
     consummation of any such Equity Offering.

     "Equity Offering" means public or private offering of our Qualified Capital
Stock; provided that, in the event such equity offering is not in the form of an
underwritten public offering registered under the Securities Act, the proceeds
we directly or indirectly receive from such offering are not less than $10.0
million.

SELECTION AND NOTICE OF REDEMPTION

     In the event that we choose to redeem less than all of the notes, the
trustee will select notes for redemption either:

          (1) in compliance with the requirements of the principal national
     securities exchange, if any, on which the notes are listed; or,

          (2) on a pro rata basis, by lot or by such method as the trustee shall
     deem fair and appropriate.

                                       74
<PAGE>   80

     No notes of a principal amount of $1,000 or less shall be redeemed in part.
If a partial redemption is made with the proceeds of an Equity Offering, the
trustee will select the notes only on a pro rata basis or on as nearly a pro
rata basis as is practicable, subject to DTC procedures, unless such method is
otherwise prohibited. Notice of redemption will be mailed by first-class mail at
least 30 but not more than 60 days before the redemption date to each holder of
notes to be redeemed at the holder's registered address. On and after the
redemption date, interest will cease to accrue on notes or portions thereof
called for redemption as long as we have deposited with the paying agent funds
in satisfaction of the applicable redemption price.

SUBORDINATION

     The payment of all Obligations on the notes is subordinated in right of
payment to the prior payment in full in cash or Cash Equivalents of all
Obligations on Senior Debt of RailWorks.

     The holders of Senior Debt are entitled to receive payment in full in cash
or Cash Equivalents of all Obligations due in respect of Senior Debt. The
payment includes any interest accruing subsequent to a bankruptcy or other
similar proceeding, whether or not such interest is an allowed claim enforceable
against RailWorks in a bankruptcy case, before the holders of notes will be
entitled to receive any payment with respect to the notes, or any note is
acquired for cash or property or otherwise, in the event of any distribution to
our creditors:

          (1) in a liquidation or dissolution of RailWorks;

          (2) in a bankruptcy, reorganization, insolvency, receivership or
     similar proceeding relating to RailWorks or its property;

          (3) in an assignment for the benefit of creditors; or

          (4) in any marshaling of RailWorks's assets and liabilities.

     We also may not make any payment in respect of the notes, or acquire any
notes for cash or property or otherwise, if:

          (1) a payment default on Designated Senior Debt occurs and is
     continuing; or

          (2) any other default occurs and is continuing on Designated Senior
     Debt (as such event of default is defined in the instrument creating or
     evidencing such Designated Senior Debt) that permits holders of the
     Designated Senior Debt to accelerate its maturity and the trustee receives
     a notice of such default (a "Payment Blockage Notice") from the
     Representative of any Designated Senior Debt.

     Payments on the notes may and shall be resumed:

          (1) in the case of a payment default, upon the date on which such
     default is cured or waived; and

          (2) in case of a nonpayment default, the earliest of the date on which
     such nonpayment default is cured or waived or ceases to exist or such
     Designated Senior Debt is paid in full (so long as no other event of
     default exists), or the trustee receives notice from the Representative for
     the respective issue of Designated Senior Debt terminating the Blockage
     Period, or 180 days after the date on which the applicable Payment Blockage
     Notice is received, unless the maturity of any Designated Senior Debt has
     been accelerated.

     No new Payment Blockage Notice may be delivered unless and until 360 days
have elapsed since the initial effective date of the immediately prior Payment
Blockage Notice.

     No nonpayment default that existed or was continuing on the date of
delivery of any Payment Blockage Notice to the trustee shall be, or be made, the
basis for a subsequent Payment Blockage Notice unless such default shall have
been cured or waived for a period of not less than 90 days.

                                       75
<PAGE>   81

     We must promptly notify holders of Senior Debt if payment of the notes is
accelerated because of an Event of Default.

     As a result of the subordination provisions described above, in the event
of a bankruptcy, liquidation or reorganization of RailWorks, holders of the
notes may recover less ratably than creditors of RailWorks who are holders of
Senior Debt. See "Risk Factors -- Risks Relating to the Notes -- The Notes Rank
Behind Other Indebtedness".

     Pro forma basis for the acquisition of the 1999 Acquired Companies, the
sale of the old notes and the application of the net proceeds, and new
borrowings under the credit facility in August 1999, at June 30, 1999, the
aggregate amount of senior debt outstanding would have been approximately $19.4
million, and RailWorks would have had $85.6 million available for borrowing
under the Credit Agreement.

GUARANTEES

     The Guarantors, which will initially include all of our domestic Restricted
Subsidiaries existing on September 30, 1999, will jointly and severally fully
and unconditionally guarantee, on an unsecured senior subordinated basis, our
obligations under the indenture and the notes. Each Guarantee will be
subordinated to Guarantor Senior Debt on the same basis as the notes are
subordinated to Senior Debt. For purposes hereof, the trustee and the holders
shall have the right to receive and/or retain payments by any of the Guarantors
only at such times as they may receive and/or retain payments from RailWorks in
respect of the notes pursuant to the indenture. The obligations of each
Guarantor under its Guarantee will be limited as necessary to prevent the
Guarantee from constituting a fraudulent conveyance or fraudulent transfer under
applicable law.

     Each Guarantor may consolidate with or merge into or sell its assets to the
Company or another Guarantor that is a Wholly Owned Restricted Subsidiary of
RailWorks without limitation, or with other Persons upon the terms and
conditions set forth in the indenture. See "-- Certain Covenants -- Merger,
Consolidation and Sale of Assets". In the event all or substantially all of the
assets or all of the Capital Stock of a Guarantor is sold by RailWorks and the
sale complies with the provisions set forth in "-- Certain
Covenants -- Limitation on Asset Sales", the Guarantor's Guarantee will be
automatically and unconditionally discharged and released.

     Separate financial statements of the Guarantors are not included herein
because such Guarantors are jointly and severally liable for our obligations
pursuant to the notes, and the aggregate net assets, earnings and equity of the
Guarantors and RailWorks are substantially equivalent to the net assets,
earnings and equity of RailWorks on a consolidated basis.

HOLDING COMPANY STRUCTURE

     RailWorks is a holding company. We have no material operations of our own
and only limited assets. Accordingly, we depend upon the distribution of the
earnings of our subsidiaries, whether in the form of dividends, advances or
payments on account of intercompany obligations, to service our debt
obligations. We cannot assure you that, after providing for all prior claims,
there would be sufficient assets available from RailWorks and our subsidiaries
to satisfy the claims of the holders of our new notes.

CHANGE OF CONTROL

     In the event of a Change of Control, each holder will have the right to
require that we purchase all or a portion of such holder's new notes pursuant to
the offer described below, the "Change of Control Offer", at a purchase price
equal to 101% of the principal amount of the new notes plus accrued and unpaid
interest, if any, to the date of purchase.

     Within 30 days following the date upon which the Change of Control
occurred, we must send, by first class mail, a notice to each holder, with a
copy to the trustee, which notice shall
                                       76
<PAGE>   82

govern the terms of the Change of Control Offer. Such notice shall state, among
other things, the purchase date, which must be no earlier than 30 days nor later
than 60 days from the date such notice is mailed, other than as may be required
by law, the date of such purchase being the "Change of Control Payment Date".
Holders electing to have a note purchased pursuant to a Change of Control Offer
will be required to surrender the note, with the form entitled "Option of Holder
to Elect Purchase" on the reverse of the note completed, to the paying agent at
the address specified in the notice prior to the close of business on the third
business day prior to the Change of Control Payment Date.

     If we make a Change of Control Offer, we cannot guarantee that we will have
available funds sufficient to pay the Change of Control purchase price for all
the notes that might be delivered by holders seeking to accept the Change of
Control Offer. In the event we are required to purchase outstanding notes
pursuant to a Change of Control Offer, we expect that we would seek third-party
financing to the extent we do not have available funds to meet our purchase
obligations. However, we cannot guarantee that we would be able to obtain the
necessary financing.

     In addition, we cannot guarantee that our debt instruments will permit us
to make a Change of Control Offer. Our credit facility does not permit us to
make a Change of Control Offer and, in order to make such offer, we would be
required to pay off the credit facility in full or seek a waiver from the
lenders under the credit facility in order to make the Change of Control Offer.
A Change of Control is an event of default under the credit facility and would
entitle the lenders to accelerate all amounts owing under the credit facility.
Any future credit agreements or other agreements relating to Senior Debt to
which we become a party may contain similar restrictions and provisions.
Moreover, the exercise by the holders of their rights to require us to
repurchase the notes could cause a default under such indebtedness, even if the
Change of Control itself does not, due to the financial effect of such
repurchase on RailWorks. Failure to make a Change of Control Offer, even if
prohibited by our debt instruments, would constitute a default under the
indenture. See "Risk Factors -- Risks Relating to the New Notes -- We May Not
Have Sufficient Cash to Purchase the New Notes Upon a Change of Control."

     We are not required to make a Change of Control Offer upon a Change of
Control if a third party makes the Change of Control Offer in compliance with
the requirements applicable to a Change of Control Offer made by RailWorks and
purchases all notes validly tendered and not withdrawn under such Change of
Control Offer.

     Neither the board of directors of RailWorks nor the trustee may waive the
covenant relating to a holder's right to redemption when a Change of Control
occurs. Each holder's right to require us to purchase that holder's notes upon a
Change of Control, and the restrictions in the indenture described in this
prospectus on the ability of RailWorks and its Restricted Subsidiaries to incur
additional Indebtedness, to grant liens on their property, to make Restricted
Payments and to make Asset Sales, may also make a takeover of RailWorks more
difficult or discourage it, whether favored or opposed by our management.
Carrying out Change of Control Offers may sometimes require redemption or
repurchase of the notes, and we cannot guarantee that we or the acquiring party
will have sufficient financial resources to do so. These restrictions and the
restrictions on transactions with affiliates may, in certain circumstances, make
more difficult or discourage any leveraged buyout of RailWorks or any of its
subsidiaries by our management. While the restrictions cover a wide variety of
arrangements that have traditionally been used to effect highly leveraged
transactions, the indenture may not afford the holders of new notes protection
in all circumstances from the adverse aspects of a highly leveraged transaction,
reorganization, restructuring, merger or similar transaction.

     We will comply with the requirements of Rule 14e-1 under the Exchange Act
and any other securities laws and regulations in connection with the repurchase
of notes pursuant to a Change of Control Offer. To the extent that the
provisions of any securities laws or regulations conflict with the "Change of
Control" provisions of the indenture, we will comply with the applicable

                                       77
<PAGE>   83

securities laws and regulations and will not be deemed to have breached our
obligations under the "Change of Control" provisions of the indenture by doing
so.

CERTAIN COVENANTS

     Limitation on Incurrence of Additional Indebtedness.  We will not, and will
not permit any of our Restricted Subsidiaries to, directly or indirectly,
create, incur, assume, guarantee, acquire, become liable, contingently or
otherwise, with respect to, or otherwise become responsible for payment of
(collectively, "incur") any Indebtedness, other than Permitted Indebtedness;
provided, however, that if no Default or Event of Default shall have occurred
and be continuing at the time of or as a consequence of the incurrence of any
such Indebtedness, RailWorks or any of its Restricted Subsidiaries that is or,
upon such incurrence, becomes a Guarantor may incur Indebtedness (including,
without limitation, Acquired Indebtedness) and Restricted Subsidiaries of
RailWorks that are not Guarantors may incur Acquired Indebtedness, in each case
if on the date of the incurrence of such Indebtedness, after giving effect to
the incurrence thereof, the Consolidated Fixed Charge Coverage Ratio of
RailWorks is greater than (x) 2.0 to 1.0 if the date of such occurrence is on or
prior to April 1, 2001, or (y) 2.25 to 1.0 if the date of such occurrence is on
or after April 1, 2001 and prior to April 1, 2004, or (z) 2.5 to 1.0 if the date
of such occurrence is on or after April 1, 2004.

     Limitation on Restricted Payments.  We will not, and will not cause or
permit any of our Restricted Subsidiaries to, directly or indirectly:

          (1) declare or pay any dividend or make any distribution, other than
     dividends or distributions payable in Qualified Capital Stock of RailWorks
     or in options, warrants or other rights to purchase Qualified Capital Stock
     of RailWorks, on or in respect of shares of the RailWorks Capital Stock to
     holders of such Capital Stock;

          (2) purchase, redeem or otherwise acquire or retire for value any
     Capital Stock of RailWorks or any warrants, rights or options to purchase
     or acquire shares of any class of such Capital Stock, other than in either
     case any RailWorks Capital Stock or other securities owned by RailWorks or
     any of its Restricted Subsidiaries;

          (3) make any principal payment on, purchase, defease, redeem, prepay,
     decrease or otherwise acquire or retire for value, prior to any scheduled
     final maturity, scheduled repayment or scheduled sinking fund payment, any
     Indebtedness of RailWorks that is subordinate or junior in right of payment
     to the notes, (i) other than any such subordinated Indebtedness owed to
     RailWorks or any of its Restricted Subsidiaries and (ii) except the
     prepayment, purchase, repurchase or other acquisition or retirement of
     Indebtedness in anticipation of satisfying a sinking fund obligation,
     principal installment or final maturity, in each case due within one year
     of the date of prepayment, purchase, repurchase or other acquisition or
     retirement; or

          (4) make any Investment (other than Permitted Investments) (each of
     the foregoing actions set forth in clauses (1), (2), (3) and (4) being
     referred to as a "Restricted Payment");

     if at the time of such Restricted Payment or immediately after giving
effect to it,

             (i) a Default or an Event of Default shall have occurred and be
        continuing; or

             (ii) we are not able to incur at least $1.00 of additional
        Indebtedness, other than Permitted Indebtedness, in compliance with the
        "Limitation on Incurrence of Additional Indebtedness" covenant; or

                                       78
<PAGE>   84

             (iii) the aggregate amount of Restricted Payments, including such
        proposed Restricted Payment made subsequent to April 7, 1999 exceeds the
        sum of:

                (w) 50% of the cumulative Consolidated Net Income, or if
           cumulative Consolidated Net Income shall be a loss, minus 100% of
           such loss, of RailWorks earned subsequent to April 7, 1999 and on or
           prior to the date the Restricted Payment occurs (the "Reference
           Date"), and treating such period as a single accounting period; plus

                (x) 100% of the aggregate net cash proceeds received by
           RailWorks from any Person, other than a Restricted Subsidiary, from
           the issuance and sale subsequent to April 7, 1999 and on or prior to
           the Reference Date of (i) Qualified Capital Stock of RailWorks and
           (ii) Indebtedness or Disqualified Capital Stock that has been
           converted into or exchanged for Qualified Capital Stock together with
           the aggregate net cash proceeds received by RailWorks or any
           Restricted Subsidiary at the time of such conversion or exchange;
           plus

                (y) without duplication of any amounts included in clause (iii)
           (x) above, 100% of the aggregate net cash proceeds of any equity
           contribution received by RailWorks from a holder of RailWorks Capital
           Stock, excluding, in the case of clauses (iii) (x) and (y), any net
           cash proceeds from an Equity Offering to the extent used to redeem
           the notes in compliance with the provisions set forth under
           "Redemption -- Optional Redemption upon Equity Offerings"; plus

                (z) without duplication, the sum of:

                    (1) the aggregate amount returned in cash on or with respect
               to Investments, except for Permitted Investments, made subsequent
               to April 7, 1999 whether through interest payments, principal
               payments, dividends or other distributions or payments;

                    (2) the net cash proceeds received by RailWorks or any of
               its Restricted Subsidiaries from the disposition of all or any
               portion of such Investments, other than to a Restricted
               Subsidiary of RailWorks; and

                    (3) upon redesignation of an Unrestricted Subsidiary as a
               Restricted Subsidiary, the fair market value of such Subsidiary;
               provided, however, that the sum of clauses (1), (2) and (3) above
               shall not exceed the aggregate amount of all such Investments
               made subsequent to April 7, 1999.

     Notwithstanding the foregoing, the provisions set forth in the immediately
preceding paragraph do not prohibit:

          (1) the payment of any dividend within 60 days after the date of
     declaration of such dividend if the dividend would have been permitted on
     the date of declaration;

          (2) the acquisition of any shares of Capital Stock of RailWorks,
     either (i) solely in exchange for shares of Qualified Capital Stock of
     RailWorks or (ii) through the application of net proceeds of a
     substantially concurrent sale for cash, other than to a Restricted
     Subsidiary, of shares of Qualified Capital Stock;

          (3) the acquisition of any Indebtedness of RailWorks that is
     subordinate or junior in right of payment to the notes either (i) solely in
     exchange for shares of Qualified Capital Stock of RailWorks, or (ii)
     through the application of net proceeds of a substantially concurrent sale
     for cash, other than to a Restricted Subsidiary of RailWorks of (a) shares
     of Qualified Capital Stock of RailWorks or (b) Refinancing Indebtedness;

          (4) so long as no Default or Event of Default shall have occurred and
     be continuing, repurchases by RailWorks of its Capital Stock from
     employees, former employees, directors or
                                       79
<PAGE>   85

     former directors of RailWorks or any of its Subsidiaries or their
     authorized representatives upon the death, disability or termination of
     employment of such employees or former employees, or termination of the
     term of such director or former director, in an aggregate amount not to
     exceed $1.0 million in any calendar year;

          (5) loans and advances made to officers or other employees to make tax
     payments associated with stock grants and/or the grant or exercise of stock
     options (i) pursuant to existing employment agreements in an amount not to
     exceed $6.5 million within six months after April 7, 1999 and (ii) in an
     amount not to exceed $1.0 million in any calendar year thereafter;

          (6) loans and advances to officers and other employees of RailWorks or
     any of its Restricted Subsidiaries for the exercise of stock options in an
     amount not to exceed $1.0 million at any one time outstanding;

          (7) the repurchase of any subordinated Indebtedness at a purchase
     price not greater than 101% of the principal amount of such subordinated
     Indebtedness in the event of a "change of control" in accordance with
     provisions similar to the "Change of Control" covenant; provided that,
     prior to or simultaneously with such repurchase, RailWorks has made the
     Change of Control Offer as provided in such covenant with respect to the
     notes and has repurchased all notes validly tendered for payment in
     connection with such Change of Control Offer;

          (8) payments or distributions to stockholders pursuant to appraisal
     rights in respect of up to 10% of the Capital Stock of RailWorks or any
     Restricted Subsidiary required by law in connection with a consolidation,
     merger or transfer of assets that complies with the covenant described
     under "-- Merger, Consolidation and Sale of Assets"; and

          (9) other Restricted Payments in an aggregate amount since April 7,
     1999 not to exceed $1.0 million.

     In determining the aggregate amount of Restricted Payments made subsequent
to April 7, 1999 in accordance with clause (iii) of the immediately preceding
paragraph, amounts expended pursuant to clauses (1), (2) (ii), (4), (5), (6),
(7) and (9) shall be included in such calculation.

     Not later than the date of making any Restricted Payment, we shall deliver
to the trustee an officers' certificate stating that such Restricted Payment
complies with the indenture and setting forth in reasonable detail the basis
upon which the required calculations were computed, which calculations may be
based upon our latest available internal quarterly financial statements.

     Limitation on Asset Sales.  We will not, and will not permit any of our
Restricted Subsidiaries to, consummate an Asset Sale unless:

          (1) RailWorks or the applicable Restricted Subsidiary, as the case may
     be, receives consideration at the time of such Asset Sale at least equal to
     the fair market value of the assets sold or otherwise disposed of, as
     determined in good faith by our board of directors;

          (2) at least 75% of the consideration received by RailWorks or the
     Restricted Subsidiary, as the case may be, from such Asset Sale shall be in
     the form of cash or Cash Equivalents and is received at the time of such
     disposition; provided that the amount of (x) any liabilities of RailWorks
     or any of its Restricted Subsidiaries (as shown on the most recent balance
     sheet of RailWorks or such Restricted Subsidiary), other than liabilities
     that are by their terms subordinated to the notes or any Guarantee, as the
     case may be, that are assumed by the transferee of any such assets pursuant
     to a customary novation agreement that releases RailWorks or such
     Restricted Subsidiary from further liability and (y) any securities, notes
     or other obligations received by RailWorks or any such Restricted
     Subsidiary from such transferee that are converted by RailWorks or such
     Restricted Subsidiary into cash, to the
                                       80
<PAGE>   86

     extent of the cash received, within 180 days after receipt, shall be deemed
     to be cash for the purposes of this clause (2); and

          (3) upon the consummation of an Asset Sale, RailWorks shall apply, or
     cause such Restricted Subsidiary to apply, the Net Cash Proceeds relating
     to such Asset Sale within 360 days of receipt thereof either:

             (a) to prepay any Senior Debt and, in the case of any Senior Debt
        under any revolving credit facility, effect a permanent reduction in the
        availability under such revolving credit facility;

             (b) to make an investment in properties and assets that replace the
        properties and assets that were the subject of such Asset Sale or in
        properties and assets that will be used in the business of RailWorks and
        its Restricted Subsidiaries as existing on April 7, 1999 or in
        businesses reasonably related or ancillary thereto ("Replacement
        Assets"); or

             (c) a combination of prepayment and investment permitted by the
        foregoing clauses (3)(a) and (3)(b).

     On the 361st day after an Asset Sale or such earlier date, if any, as the
Board of Directors of RailWorks or of such Restricted Subsidiary determines not
to apply the Net Cash Proceeds relating to such Asset Sale as set forth in
clauses (3)(a), (3)(b) and (3)(c) of the preceding paragraph, each such date a
"Net Proceeds Offer Trigger Date", subject to the immediately succeeding
paragraph, such aggregate amount of Net Cash Proceeds that have not been applied
on or before such Net Proceeds Offer Trigger Date as permitted in clauses
(3)(a), (3)(b) and (3)(c) of the preceding paragraph (each a "Net Proceeds Offer
Amount") shall be applied by RailWorks or such Restricted Subsidiary to make an
offer to purchase, such offer being the "Net Proceeds Offer", on a date, the
"Net Proceeds Offer Payment Date", not less than 30 nor more than 60 days
following the applicable Net Proceeds Offer Trigger Date, from all holders on a
pro rata basis, that amount of notes equal to the Net Proceeds Offer Amount at a
price equal to 100% of the principal amount of the notes to be purchased, plus
accrued and unpaid interest thereon, if any, to the date of purchase.

     We may defer the Net Proceeds Offer until there is an aggregate unutilized
Net Proceeds Offer Amount equal to or in excess of $10.0 million resulting from
one or more Asset Sales, at which time, the entire unutilized Net Proceeds Offer
Amount, and not just the amount in excess of $10.0 million, shall be applied as
required pursuant to this paragraph. Upon completion of a Net Proceeds Offer,
the amount of Net Cash Proceeds and the aggregate unutilized Net Proceeds Offer
Amount will be reset to zero. Accordingly, to the extent that any Net Proceeds
remain after consummation of a Net Proceeds Offer, we may use such Net Proceeds
for any purpose not prohibited by the indenture.

     Notwithstanding the first two paragraphs of this covenant, RailWorks and
its Restricted Subsidiaries will be permitted to consummate an Asset Sale
without complying with such paragraphs to the extent that:

          (1) at least 75% of the consideration for such Asset Sale constitutes
     Replacement Assets; and

          (2) such Asset Sale is for fair market value; provided that any
     consideration not constituting Replacement Assets received by RailWorks or
     any of its Restricted Subsidiaries in connection with any Asset Sale
     permitted to be consummated under this paragraph shall constitute Net Cash
     Proceeds subject to the provisions of the first two paragraphs of this
     covenant.

     Each Net Proceeds Offer will be mailed to the record holders as shown on
the register of holders within 25 days following the Net Proceeds Offer Trigger
Date, with a copy to the trustee, and shall comply with the procedures set forth
in the indenture. Upon receiving notice of the
                                       81
<PAGE>   87

Net Proceeds Offer, holders may elect to tender their notes in whole or in part
in integral multiples of $1,000 in exchange for cash. To the extent holders
properly tender notes in an amount exceeding the Net Proceeds Offer Amount,
notes of tendering holders will be purchased on a pro rata basis. A Net Proceeds
Offer shall remain open for a period of 20 business days or such longer period
as may be required by law.

     We will comply with the requirements of Rule 14e-1 under the Exchange Act
and any other securities laws and regulations thereunder to the extent such laws
and regulations are applicable in connection with the repurchase of notes
pursuant to a Net Proceeds Offer. To the extent that the provisions of any
securities laws or regulations conflict with the "Asset Sale" provisions of the
indenture, we shall comply with the applicable securities laws and regulations
and shall not be deemed to have breached its obligations under the "Asset Sale"
provisions of the indenture by doing so.

     Limitation on Dividend and Other Payment Restrictions Affecting Restricted
Subsidiaries. We will not, and will not permit any of our Restricted
Subsidiaries to, directly or indirectly, create or otherwise cause or permit to
exist or become effective any encumbrance or restriction on the ability of any
Restricted Subsidiary to:

          (1) pay dividends or make any other distributions on or in respect of
     its Capital Stock;

          (2) make loans or advances or to pay any Indebtedness owed to
     RailWorks or any of its Restricted Subsidiaries; or

          (3) transfer any of its property or assets to RailWorks or any of its
     Restricted Subsidiaries, except for such encumbrances or restrictions
     existing under or by reason of:

             (a) applicable law;

             (b) the indenture, the Guarantees and the notes;

             (c) customary non-assignment provisions of any contract or any
        lease governing a leasehold interest of any of our Restricted
        Subsidiaries;

             (d) any instrument governing Acquired Indebtedness, which
        encumbrance or restriction is not applicable to any Person, or the
        properties or assets of any Person, other than the Person or the
        properties or assets of the Person so acquired;

             (e) the Credit Agreement and any other agreements in effect on
        April 7, 1999;

             (f) an agreement entered into for the sale or disposition of
        Capital Stock or assets of a Restricted Subsidiary or an agreement
        entered into for the sale of specified assets, in either case, so long
        as such encumbrance or restriction, by its terms, terminates upon
        consummation of such sale or termination of such agreements;

             (g) any agreement or instrument governing Indebtedness or Capital
        Stock of any Person in effect at the time it is acquired by RailWorks or
        any of its Restricted Subsidiaries;

             (h) purchase money obligations for assets acquired in the ordinary
        course of business that impose restrictions of the nature described in
        (3) above on the property so acquired;

             (i) customary provisions with respect to the disposition or
        distribution of assets in joint venture agreements and other similar
        agreements;

             (j) customary restrictions on transfers of property subject to a
        Lien permitted under the indenture imposed by the holder of such Lien;
        or

             (k) an agreement governing Indebtedness incurred to Refinance the
        Indebtedness issued, assumed or incurred pursuant to an agreement
        permitted above; provided,
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<PAGE>   88

        however, that the provisions relating to such encumbrance or restriction
        contained in any such Indebtedness are no less favorable to RailWorks in
        any material respect as determined by the RailWorks board of directors
        in their reasonable and good faith judgment than the provisions relating
        to such encumbrance or restriction contained in agreements referred to
        above.

     Limitation on Preferred Stock of Restricted Subsidiaries.  We will not
permit any of our Restricted Subsidiaries that are not Guarantors to issue any
Preferred Stock (other than to or to a Wholly Owned Restricted Subsidiary of
RailWorks) or permit any Person (other than RailWorks or a Wholly Owned
Restricted Subsidiary of RailWorks) to own any Preferred Stock of any Restricted
Subsidiary that is not a Guarantor. Notwithstanding the foregoing, nothing in
such covenant will prohibit Preferred Stock issued by a Person prior to the time
(A) such Person becomes a Restricted Subsidiary of RailWorks, (B) such Person
merges with or into a Restricted Subsidiary of RailWorks or (C) a Restricted
Subsidiary of RailWorks merges with or into such Person; provided that such
Preferred Stock was not issued or incurred by such Person in anticipation of a
transaction contemplated by subclause (A), (B) or (C) above.

     Limitation on Liens.  We will not, and will not permit any of our
Restricted Subsidiaries to, directly or indirectly, create, incur, assume or
permit or suffer to exist any Liens of any kind against or upon any property or
assets of ours or of any of our Restricted Subsidiaries whether owned on, or
acquired after April 7, 1999, or any proceeds therefrom, or assign or otherwise
convey any right to receive income or profits therefrom unless:

          (1) in the case of Liens securing Indebtedness that is expressly
     subordinate or junior in right of payment to the notes, the notes are
     secured by a Lien on such property, assets or proceeds that is senior in
     priority to such Liens; and

          (2) in all other cases, the notes are equally and ratably secured,
     except for:

             (a) Liens existing as of April 7, 1999 to the extent and in the
        manner such Liens are in effect on April 7, 1999;

             (b) Liens securing Senior Debt and Liens securing Guarantor Senior
        Debt;

             (c) Liens securing the notes and the Guarantees;

             (d) Liens of RailWorks or a Wholly Owned Restricted Subsidiary of
        RailWorks on assets of any Restricted Subsidiary of RailWorks;

             (e) Liens securing Refinancing Indebtedness which is incurred to
        Refinance any Indebtedness which has been secured by a Lien permitted
        under the indenture and which has been incurred in accordance with the
        provisions of the indenture; provided, however, that such Liens: (i) are
        no less favorable to the holders and are not more favorable to the
        lienholders with respect to such Liens than the Liens in respect of the
        Indebtedness being Refinanced; and (ii) do not extend to or cover any
        property or assets of RailWorks or any of its Restricted Subsidiaries
        not securing the Indebtedness so Refinanced; and

             (f) Permitted Liens.

     Prohibition on Incurrence of Senior Subordinated Debt.  We will not, and
will not permit any Restricted Subsidiary that is a Guarantor to, incur or
suffer to exist Indebtedness that is senior in right of payment to the notes or
such Guarantor's Guarantee, as the case may be, and subordinate in right of
payment to any other Indebtedness of RailWorks or such Guarantor, as the case
may be.

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<PAGE>   89

     Merger, Consolidation and Sale of Assets.  We will not, in a single
transaction or series of related transactions, consolidate or merge with or into
any Person, or sell, assign, transfer, lease, convey or otherwise dispose of, or
permit any of our Restricted Subsidiaries to sell, assign, transfer, lease,
convey or otherwise dispose of, all or substantially all of our assets
(determined on a consolidated basis for RailWorks and its Restricted
Subsidiaries), whether as an entirety or substantially as an entirety to any
Person unless:

          (1) either:

             (a) RailWorks shall be the surviving or continuing corporation; or

             (b) the Person, if other than RailWorks, formed by such
        consolidation or into which RailWorks is merged or the Person which
        acquires by sale, assignment, transfer, lease, conveyance or other
        disposition the properties and assets of RailWorks and of its Restricted
        Subsidiaries substantially as an entirety, such Person being referred to
        as the "Surviving Entity":

                (x) shall be a corporation organized and validly existing under
           the laws of the United States or any State thereof or the District of
           Columbia; and

                (y) shall expressly assume, by supplemental indenture (in form
           and substance reasonably satisfactory to the trustee), executed and
           delivered to the trustee, the due and punctual payment of the
           principal of (and premium, if any) and interest on all of the notes
           and the performance of every covenant of the notes, the indenture and
           the registration rights agreement to be performed or observed by
           RailWorks;

          (2) immediately after giving effect to such transaction and the
     assumption contemplated by clause (1)(b)(y) above (including giving effect
     to any Indebtedness and Acquired Indebtedness incurred or anticipated to be
     incurred in connection with or in respect of such transaction), RailWorks
     or such Surviving Entity, as the case may be, (a) shall have a Consolidated
     Net Worth equal to or greater than the Consolidated Net Worth of RailWorks
     immediately prior to such transaction and (b) shall be able to incur at
     least $1.00 of additional Indebtedness, not including Permitted
     Indebtedness, pursuant to the "Limitation on Incurrence of Additional
     Indebtedness" covenant;

          (3) immediately before and immediately after giving effect to such
     transaction and the assumption contemplated by clause (1)(b)(y) above,
     including, without limitation, giving effect to any Indebtedness and
     Acquired Indebtedness incurred or anticipated to be incurred and any Lien
     granted in connection with or in respect of the transaction, no Default or
     Event of Default shall have occurred or be continuing; and

          (4) RailWorks or the Surviving Entity shall have delivered to the
     trustee an officers' certificate and an opinion of counsel, each stating
     that such consolidation, merger, sale, assignment, transfer, lease,
     conveyance or other disposition and, if a supplemental indenture is
     required in connection with such transaction, such supplemental indenture
     comply with the applicable provisions of the indenture and that all
     conditions precedent in the indenture relating to such transaction have
     been satisfied.

     Notwithstanding the foregoing clauses (2), (3) and (4), (a) any Restricted
Subsidiary may consolidate with, merge into or transfer all or part of its
property and assets to RailWorks or any other Restricted Subsidiary and (b)
RailWorks may merge with an Affiliate incorporated solely for the purpose of
reincorporating RailWorks in another jurisdiction in the United States.

     For purposes of the foregoing, the transfer (by lease, assignment, sale or
otherwise, in a single transaction or series of transactions) of all or
substantially all of the properties or assets of one or more of our Restricted
Subsidiaries, the Capital Stock of which constitutes all or substantially all of
the properties and assets of RailWorks, shall be deemed to be the transfer of
all or substantially all of the properties and assets of RailWorks.
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<PAGE>   90

     The indenture provides that upon any consolidation, combination or merger
or any transfer of all or substantially all of the assets of RailWorks in
accordance with the foregoing, in which RailWorks is not the Surviving Entity,
the Surviving Entity shall succeed to, and be substituted for, and may exercise
every right and power of, RailWorks under the indenture and the notes with the
same effect as if such surviving entity had been named as such.

     Each Guarantor (other than any Guarantor whose Guarantee is to be released
in accordance with the terms of the Guarantee and the Indenture in connection
with any transaction complying with the provisions of "-- Limitation on Asset
Sales") will not, and we will not cause or permit any Guarantor to, consolidate
with or merge with or into any Person other than RailWorks or any other
Guarantor unless:

          (1) the entity formed by or surviving any such consolidation or merger
     (if other than the Guarantor) or to which such sale, lease, conveyance or
     other disposition shall have been made is a corporation organized and
     existing under the laws of the United States or any State thereof or the
     District of Columbia;

          (2) such entity assumes by supplemental indenture all of the
     obligations of the Guarantor on the Guarantee;

          (3) immediately after giving effect to such transaction, no Default or
     Event of Default shall have occurred and be continuing; and

          (4) immediately after giving effect to such transaction and the use of
     any net proceeds therefrom on a pro forma basis, RailWorks could satisfy
     the provisions of clause (2) of the first paragraph of this covenant.

     Any merger or consolidation of a Guarantor with and into RailWorks (with
RailWorks being the surviving entity) or another Guarantor that is a Wholly
Owned Restricted Subsidiary of RailWorks need only comply with clause (4) of the
first paragraph of this covenant.

     Limitations on Transactions with Affiliates.  (a) We will not, and will not
permit any of our Restricted Subsidiaries to, directly or indirectly, enter into
or permit to exist any transaction or series of related transactions (including,
without limitation, the purchase, sale, lease or exchange of any property or the
rendering of any service) with, or for the benefit of, any of our Affiliates,
each such transaction is referred to as an "Affiliate Transaction", other than
(x) Affiliate Transactions permitted under paragraph (b) below and (y) Affiliate
Transactions on terms that are no less favorable than those that might
reasonably have been obtained in a comparable transaction at such time on an
arm's-length basis from a Person that is not an Affiliate of RailWorks or such
Restricted Subsidiary.

     All Affiliate Transactions, and each series of related Affiliate
Transactions which are similar or part of a common plan, involving aggregate
payments or other property with a fair market value in excess of $2.0 million
shall be approved by the board of directors of RailWorks or such Restricted
Subsidiary, as the case may be, such approval to be evidenced by a Board
Resolution stating that such board of directors has determined that the
transaction complies with the foregoing provisions. If RailWorks or any of its
Restricted Subsidiaries enters into an Affiliate Transaction, or a series of
related Affiliate Transactions related to a common plan, that involves an
aggregate fair market value of more than $5.0 million, RailWorks or such
Restricted Subsidiary, as the case may be, will, prior to the consummation of
the transaction, obtain a favorable opinion as to the fairness of such
transaction or series of related transactions to RailWorks or the relevant
Restricted Subsidiary, as the case may be, from a financial point of view, from
an Independent Financial Advisor and file the same with the trustee.

     (b) The restrictions set forth in the first paragraph of this covenant
shall not apply to:

          (1) reasonable fees and compensation, including severance payments and
     compensation in the form of securities, and customary expense reimbursement
     paid to and indemnity and
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<PAGE>   91

     reimbursement provided on behalf of, officers, directors, employees or
     consultants of RailWorks or any of its RailWorks Restricted Subsidiaries as
     determined in good faith by RailWorks's board of directors or senior
     management;

          (2) transactions exclusively between or among RailWorks and any of its
     Restricted Subsidiaries or exclusively between or among such Restricted
     Subsidiaries, provided such transactions are not otherwise prohibited by
     the indenture;

          (3) transactions pursuant to or contemplated by any agreement as in
     effect as of April 7, 1999 or any amendment thereto or any replacement
     agreement so long as any such amendment or replacement agreement is not
     more disadvantageous to the holders in any material respect than the
     original agreement as in effect on April 7, 1999;

          (4) loans and advances to employees or officers of RailWorks and its
     Restricted Subsidiaries permitted by clause (4) of the definition of
     "Permitted Investments;"

          (5) Restricted Payments permitted by the indenture; and

          (6) contingent and "earn out" payments incurred in connection with any
     Asset Acquisition or otherwise, which are contingent on the performance of
     the assets or properties acquired.

     Additional Subsidiary Guarantees.  If RailWorks or any of its Restricted
Subsidiaries transfers or causes to be transferred, in one transaction or a
series of related transactions, any property to any domestic Restricted
Subsidiary that is not a Guarantor, or if RailWorks or any of its Restricted
Subsidiaries organizes, acquires or otherwise invests in another domestic
Restricted Subsidiary having total assets with a book value in excess of
$500,000, then such transferee or acquired or other Restricted Subsidiary shall:

          (1) execute and deliver to the trustee a supplemental indenture in
     form reasonably satisfactory to the trustee pursuant to which such
     Restricted Subsidiary unconditionally guarantees on a senior subordinated
     basis all of the RailWorks obligations under the notes and the indenture on
     the terms set forth in the indenture; and

          (2) deliver to the trustee an opinion of counsel that such
     supplemental indenture has been duly authorized, executed and delivered by
     such Restricted Subsidiary and constitutes a legal, valid, binding and
     enforceable obligation of such Restricted Subsidiary. Thereafter, such
     Restricted Subsidiary shall be a Guarantor for all purposes of the
     indenture.

     Conduct of Business.  RailWorks and its Restricted Subsidiaries will not
engage in any businesses which are not the same, similar or reasonably related
or ancillary to the businesses in which RailWorks and its Restricted
Subsidiaries are engaged on April 7, 1999, except to such extent as would not be
material to RailWorks and its Restricted Subsidiaries taken as a whole.

     Reports to Holders.  The indenture will provide that, whether or not
required by the rules and regulations of the SEC, so long as any notes are
outstanding, RailWorks will furnish the holders of notes:

          (1) all quarterly and annual financial information that would be
     required to be contained in a filing with the SEC on Forms 10-Q and 10-K if
     RailWorks were required to file such Forms, including a "Management's
     Discussion and Analysis of Financial Condition and Results of Operations"
     that describes the financial condition and results of operations of
     RailWorks and its consolidated Subsidiaries, showing in reasonable detail,
     either on the face of the financial statements or in the footnotes thereto
     and in Management's Discussion and Analysis of Financial Condition and
     Results of Operations, the financial condition and results of operations of
     RailWorks and its Restricted Subsidiaries separate from the financial
     condition and results of operations of the Unrestricted Subsidiaries of
     RailWorks, if any, and,

                                       86
<PAGE>   92

     with respect to the annual information only, a report thereon by
     RailWorks's certified independent accounts; and

          (2) all current reports that would be required to be filed with SEC on
     Form 8-K if RailWorks were required to file such reports, in each case
     within the time periods specified in the SEC's rules and regulations.

     In addition, following the consummation of the exchange offer contemplated
by the registration rights agreement, whether or not required by the rules and
regulations of the SEC, we will file a copy of all such information and reports
with the SEC for public availability within the time periods specified in the
SEC's rules and regulations, unless the SEC will not accept such a filing, and
make such information available to securities analysts and prospective investors
upon request. In addition, we have agreed that, for so long as any notes remain
outstanding, we will furnish to the holders and to securities analysts and
prospective investors, upon their request, the information required to be
delivered pursuant to Rule 144A(d)(4) under the Securities Act.

EVENTS OF DEFAULT

     The following events are defined in the indenture as "Events of Default":

          (1) the failure to pay interest on any notes when they become due and
     payable and the default continues for a period of 30 days, whether or not
     such payment is prohibited by the subordination provisions of the
     indenture;

          (2) the failure to pay the principal on any notes, when such principal
     becomes due and payable, at maturity, upon redemption or otherwise,
     including the failure to make a payment to purchase notes tendered pursuant
     to a Change of Control Offer or a Net Proceeds Offer, whether or not such
     payment is prohibited by the subordination provisions of the indenture;

          (3) a default in the observance or performance of any other covenant
     or agreement contained in the indenture, which default continues for a
     period of 60 days after RailWorks receives written notice specifying the
     default, and demanding that such default be remedied, from the trustee or
     the holders of at least 25% of the outstanding principal amount of the
     notes (except in the case of a default with respect to the "Merger,
     Consolidation and Sale of Assets" covenant, which will constitute an Event
     of Default with such notice requirement but without such passage of time
     requirement);

          (4) the failure to pay at final maturity, after giving effect to any
     applicable grace periods and any extensions thereof, the principal amount
     of any Indebtedness of RailWorks or any Restricted Subsidiary of RailWorks
     and such failure continues for a period of 20 days or more, or the
     acceleration of the final stated maturity of any such Indebtedness, which
     acceleration is not rescinded, annulled or otherwise cured within 20 days
     of receipt by RailWorks or such Restricted Subsidiary of notice of any such
     acceleration, if the aggregate principal amount of such Indebtedness,
     whether outstanding under one or more agreements, together with the
     principal amount of any other such Indebtedness in default for failure to
     pay principal at final maturity or which has been accelerated, aggregates
     $10.0 million or more at any time;

          (5) one or more judgments in an aggregate amount in excess of $10.0
     million shall have been rendered against RailWorks or any of its Restricted
     Subsidiaries and such judgments remain undischarged, unpaid or unstayed for
     a period of 60 days after such judgment or judgments become final and
     non-appealable;

          (6) certain events of bankruptcy affecting RailWorks or any of its
     Significant Subsidiaries; or

          (7) any Guarantee of a Significant Subsidiary ceases to be in full
     force and effect or any Guarantee of a Significant Subsidiary is declared
     to be null and void and unenforceable or
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<PAGE>   93

     any Guarantee of a Significant Subsidiary is found to be invalid or any
     Guarantor that is a Significant Subsidiary denies its liability under its
     Guarantee (other than by reason of release of a Guarantor in accordance
     with the terms of the indenture) and such condition has continued for a
     period of 30 days after written notice of such failure requiring the
     Guarantor and RailWorks to remedy the same has been given (x) to RailWorks
     by the trustee or (y) to RailWorks and the trustee by the holders of 25% in
     aggregate principal amount of the notes then outstanding.

     If an Event of Default, other than an Event of Default specified in clause
(6) above with respect to RailWorks, shall occur and be continuing, the trustee
or the holders of at least 25% in principal amount of outstanding notes may
declare the principal of and accrued interest on all the notes to be due and
payable by notice in writing to RailWorks and the trustee specifying the
respective Event of Default and that it is a "notice of acceleration", such
notice being an "Acceleration Notice", and the same:

          (1) shall become immediately due and payable; or

          (2) if there are any amounts outstanding under the Credit Agreement,
     shall become immediately due and payable upon the first to occur of an
     acceleration under the Credit Agreement or 5 business days after receipt by
     RailWorks and the Representative under the Credit Agreement of such
     Acceleration Notice but only if such Event of Default is then continuing.
     If an Event of Default specified in clause (6) above with respect to
     RailWorks occurs and is continuing, then all unpaid principal of, and
     premium, if any, and accrued and unpaid interest on all of the outstanding
     notes shall ipso facto become and be immediately due and payable without
     any declaration or other act on the part of the trustee or any holder.

     The indenture provides that, at any time after a declaration of
acceleration with respect to the notes as described in the preceding paragraph,
the holders of a majority in principal amount of the notes may rescind and
cancel such declaration and its consequences:

          (1) if the rescission would not conflict with any judgment or decree;

          (2) if all existing Events of Default have been cured or waived except
     nonpayment of principal or interest that has become due solely because of
     the acceleration;

          (3) to the extent the payment of such interest is lawful, interest on
     overdue installments of interest and overdue principal, which has become
     due otherwise than by such declaration of acceleration, has been paid;

          (4) if RailWorks has paid the trustee its reasonable compensation and
     reimbursed the trustee for its expenses, disbursements and advances; and

          (5) in the event of the cure or waiver of an Event of Default of the
     type described in clause (6) of the description above of Events of Default,
     the trustee shall have received an officers' certificate and an opinion of
     counsel that such Event of Default has been cured or waived. No such
     rescission shall affect any subsequent Default or impair any right
     consequent to a Default.

     The holders of not less than a majority in principal amount of the notes
may waive any existing Default or Event of Default under the indenture, and its
consequences, except a default in the payment of the principal of or interest on
any notes.

     Holders of the notes may not enforce the indenture or the notes except as
provided in the indenture and under the Trust Indenture Act. Subject to the
provisions of the indenture relating to the duties of the trustee, the trustee
is under no obligation to exercise any of its rights or powers under the
indenture at the request, order or direction of any of the holders, unless such
holders have offered reasonable indemnity to the trustee. Subject to all
provisions of the indenture and applicable law, the holders of a majority in
aggregate principal amount of the then

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<PAGE>   94

outstanding notes have the right to direct the time, method and place of
conducting any proceeding for any remedy available to the trustee or exercising
any trust or power conferred on the trustee.

     Under the indenture, we are required to provide an officers' certificate to
the trustee promptly upon any such officer's obtaining knowledge of any Default
or Event of Default, provided that such officers shall provide such
certification at least annually whether or not they know of any Default or Event
of Default, that has occurred and, if applicable, describe such Default or Event
of Default and the status thereof.

LEGAL DEFEASANCE AND COVENANT DEFEASANCE

     We may, at our option and at any time, elect to have our obligations and
the obligations of the Guarantors discharged with respect to the outstanding
notes, such discharge is called "Legal Defeasance". Legal Defeasance means that
RailWorks and, if it so elects, the Guarantors, shall be deemed to have paid and
discharged the entire indebtedness represented by the outstanding notes, except
for:

          (1) the rights of holders to receive payments in respect of the
     principal of, premium, if any, and interest on the notes when those
     payments are due;

          (2) our obligations with respect to the notes concerning issuing
     temporary notes, registration of notes, mutilated, destroyed, lost or
     stolen notes and the maintenance of an office or agency for payments;

          (3) the rights, powers, trust, duties and immunities of the trustee
     and our related obligations; and

          (4) the Legal Defeasance provisions of the indenture.

     In addition, we may, at our option and at any time, elect to have our
obligations and the obligations of the Guarantors released with respect to
certain covenants that are described in the indenture, such release is called
"Covenant Defeasance", and thereafter any omission to comply with those
obligations shall not constitute a Default or Event of Default with respect to
the notes. In the event Covenant Defeasance occurs, certain events, described
under "Events of Default" but not including non-payment, bankruptcy,
receivership, reorganization and insolvency events, will no longer constitute an
Event of Default with respect to the notes. Concurrently with any Legal
Defeasance or Covenant Defeasance, we may, at our further option, cause to be
terminated, as of the date on which such Legal Defeasance or Covenant Defeasance
occurs, all of the obligations under any or all of the Guarantees, if any, then
existing. In order to exercise such option regarding a Guarantee, we will
provide the trustee with written notice of our desire to terminate that
Guarantee prior to the delivery of the opinion of counsel referred to in clause
(2) or (3), as applicable, of the next succeeding paragraph.

     In order to exercise either Legal Defeasance or Covenant Defeasance:

          (1) we must irrevocably deposit with the trustee, in trust, for the
     benefit of the holders, cash in U.S. dollars, non-callable U.S. government
     obligations, or a combination thereof, in amounts as will be sufficient, in
     the opinion of a nationally recognized firm of independent public
     accountants, to pay the principal of, premium, if any, and interest on the
     notes on the stated date for their payment or on the applicable redemption
     date, as the case may be;

          (2) in the case of Legal Defeasance, we must deliver to the trustee an
     opinion of counsel in the United States reasonably acceptable to the
     trustee confirming that:

             (a) we have received from, or there has been published by, the
        Internal Revenue Service a ruling; or

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<PAGE>   95

             (b) since the date of the indenture, there has been a change in the
        applicable federal income tax law, in either case to the effect that,
        and based thereon such opinion of counsel shall confirm that, the
        holders will not recognize income, gain or loss for federal income tax
        purposes as a result of such Legal Defeasance and will be subject to
        federal income tax on the same amounts, in the same manner and at the
        same times as would have been the case if such Legal Defeasance had not
        occurred;

          (3) in the case of Covenant Defeasance, we must deliver to the trustee
     an opinion of counsel in the United States reasonably acceptable to the
     trustee confirming that the holders will not recognize income, gain or loss
     for federal income tax purposes as a result of such Covenant Defeasance and
     will be subject to federal income tax on the same amounts, in the same
     manner and at the same times as would have been the case if such Covenant
     Defeasance had not occurred;

          (4) no Default or Event of Default shall have occurred and be
     continuing on the date of such deposit (other than a Default or an Event of
     Default resulting from the borrowing of funds to be applied to such deposit
     and the grant of any Lien securing such borrowing) or insofar as Events of
     Default from bankruptcy or insolvency events are concerned, at any time in
     the period ending on the 91st day after the date of deposit;

          (5) such Legal Defeasance or Covenant Defeasance shall not result in a
     breach or violation of, or constitute a default under the indenture (other
     than a Default or an Event of Default resulting from the borrowing of funds
     to be applied to such deposit and the grant of any Lien securing such
     borrowing) or any other material agreement or instrument to which we or any
     of our subsidiaries is a party or by which we or any of our subsidiaries is
     bound;

          (6) we must deliver to the trustee an officers' certificate stating
     that we did not make the deposit with the intent of preferring the holders
     over any of our other creditors or with the intent of defeating, hindering,
     delaying or defrauding any of our other creditors or others;

          (7) we must deliver to the trustee an officers' certificate and an
     opinion of counsel, each stating that all conditions precedent provided for
     or relating to the Legal Defeasance or the Covenant Defeasance have been
     complied with;

          (8) we must deliver to the trustee an opinion of counsel to the effect
     that, subject to customary assumptions and exclusions:

             (a) the trust funds will not be subject to any rights of holders of
        Senior Debt, including, without limitation, those arising under the
        indenture; and

             (b) assuming no intervening bankruptcy of RailWorks between the
        date of deposit and the 91st day following the date of deposit and that
        no holder is an insider of RailWorks, after the 91st day following the
        date of deposit, the trust funds will not be subject to the effect of
        any applicable bankruptcy, insolvency, reorganization or similar laws
        affecting creditors' rights generally; and

          (9) certain other customary conditions precedent are satisfied.

     Despite the above, the opinion of counsel required by clause (2) above with
respect to a Legal Defeasance need not be delivered if all notes not theretofore
delivered to the trustee for cancellation (1) have become due and payable, (2)
will become due and payable on the maturity date within one year or (3) are to
be called for redemption within one year under arrangements satisfactory to the
trustee for the giving of notice of redemption by the trustee in our name, and
at our expense.

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<PAGE>   96

SATISFACTION AND DISCHARGE

     The indenture, the notes and the Guarantees will be discharged and will
cease to be of further effect, except as to surviving rights or registration of
transfer or exchange of the notes, as expressly provided for in the indenture,
as to all outstanding notes when:

          (1) either:

             (a) all the notes previously authenticated and delivered, except
        lost, stolen or destroyed notes which have been replaced or paid and
        notes for whose payment money has previously been deposited in trust or
        segregated and held in trust by us and afterwards repaid to us or
        discharged from such trust, have been delivered to the trustee for
        cancellation; or

             (b) all notes not previously delivered to the trustee for
        cancellation have become due and payable and we have irrevocably
        deposited or caused to be deposited with the trustee funds in an amount
        sufficient to pay and discharge the entire Indebtedness on the notes not
        previously delivered to the trustee for cancellation, for principal of,
        premium, if any, and interest on the notes to the date of deposit
        together with irrevocable instructions from us directing the trustee to
        apply the funds to the payment at maturity or redemption;

          (2) we have paid all other sums payable under the indenture by us; and

          (3) we have delivered to the trustee an officers' certificate and an
     opinion of counsel stating that all conditions precedent under the
     indenture relating to the satisfaction and discharge of the indenture have
     been complied with.

MODIFICATION OF THE INDENTURE

     From time to time, we, the Guarantors and the trustee, without the consent
of the holders, may amend the indenture for certain specified purposes,
including:

          (1) to evidence the succession of another person to RailWorks or any
     Guarantor and the assumption by any such succession of the covenants of
     RailWorks or any Guarantor in the indenture and in the notes;

          (2) to add to the covenants of RailWorks or any Guarantor for the
     benefit of the holders, or to surrender any right or power herein conferred
     upon RailWorks or any Guarantor; or

          (3) to add additional Events of Default; or

          (4) to provide for uncertificated notes in addition to or in place of
     the certificated notes; or

          (5) to evidence and provide for the acceptance of appointment under
     the indenture by a successor trustee; or

          (6) to secure the notes or any Guarantee; or

          (7) to cure any ambiguity or inconsistencies or to correct or
     supplement any provision in the indenture that may be defective or
     inconsistent with any other provisions in the indenture or to make any
     other provisions with respect to matters or questions arising under the
     indenture so long as such change does not adversely affect the rights of
     the holders in any material respect; or

          (8) to comply with any requirements of the SEC in order to effect and
     maintain the qualification of the indenture under the Trust Indenture Act,
     if applicable; or

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<PAGE>   97

          (9) to release any Guarantor from its Guarantee in accordance with the
     provisions of the indenture, including in connection with a sale of all of
     the Capital Stock or all or substantially all of the assets of the
     Guarantor.

     Other modifications and amendments of the indenture may be made with the
consent of the holders of a majority in principal amount of the then outstanding
notes issued under the indenture, including without limitation, consents
obtained in connection with a purchase of, or tender offer or exchange offer
for, notes, except that, without the consent of each holder affected thereby, no
amendment may:

          (1) reduce the amount of notes whose holders must consent to an
     amendment;

          (2) reduce the rate of or change or have the effect of changing the
     time for payment of interest, including defaulted interest, on any notes;

          (3) reduce the principal of or change or have the effect of changing
     the fixed maturity of any notes, or change the date on which any notes may
     be subject to redemption or reduce the redemption price therefor;

          (4) make any notes payable in money other than that stated in the
     notes;

          (5) make any change in provisions of the indenture protecting the
     right of each holder to receive payment of principal of and interest on
     such note on or after the due date thereof or to bring suit to enforce such
     payment, or permitting holders of a majority in principal amount of notes
     to waive Defaults or Events of Default;

          (6) after our obligation to purchase notes arises under the indenture,
     amend, change or modify in any material respect our obligation to make and
     consummate a Change of Control Offer in the event of a Change of Control or
     make and consummate a Net Proceeds Offer with respect to any Asset Sale
     that has been consummated or, after such Change of Control has occurred or
     such Asset Sale has been consummated, modify any of the related provisions
     or definitions;

          (7) modify or change any provision of the indenture or the related
     definitions affecting the subordination or ranking of the notes or any
     Guarantee in a manner materially adverse to the holders; or

          (8) release any Guarantor that is a Significant Subsidiary from any of
     its obligations under its Guarantee or the indenture otherwise than in
     accordance with the terms of the indenture.

GOVERNING LAW

     The indenture provides that it, the notes and the Guarantees are governed
by, and construed in accordance with, the laws of the State of New York but
without giving effect to applicable principles of conflicts of law to the extent
that the application of the law of another jurisdiction would be required by New
York State law.

THE TRUSTEE

     The indenture provides that, except during the continuance of an Event of
Default, the trustee will perform only such duties as are specifically set forth
in the indenture. During the existence of an Event of Default, the trustee will
exercise such rights and powers vested in it by the indenture, and use the same
degree of care and skill in its exercise as a prudent person would exercise or
use under the circumstances in the conduct of such person's own affairs.

     The indenture and the provisions of the Trust Indenture Act contain certain
limitations on the rights of the trustee, should it become a creditor of
RailWorks, to obtain payments of claims in certain cases or to realize on
certain property received in respect of any such claim as security
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<PAGE>   98

or otherwise. Subject to the Trust Indenture Act, the trustee will be permitted
to engage in other transactions; provided that if the trustee acquires any
conflicting interest as described in the Trust Indenture Act, it must eliminate
such conflict or resign.

CERTAIN DEFINITIONS

     Set forth below is a summary of certain of the defined terms used in the
indenture. We refer you to the indenture for the full definition of all these
terms, as well as any other terms used in this prospectus for which no
definition is provided.

     "Acquired Indebtedness" means Indebtedness of a Person or any of its
Subsidiaries existing at the time such Person becomes a Restricted Subsidiary of
RailWorks or at the time it merges or consolidates with RailWorks or any of its
Subsidiaries or assumed in connection with the acquisition of assets from such
Person and in each case whether or not incurred by such Person in connection
with, or in anticipation or contemplation of, such Person becoming a Restricted
Subsidiary of RailWorks or such acquisition, merger or consolidation, provided
that any Indebtedness of such Person that is redeemed, defeased, retried or
otherwise repaid at the time of or immediately upon consummation of the
transaction by which such Person is merged with or into RailWorks, becomes a
Restricted Subsidiary or such assets are acquired from such Person will not be
Acquired Indebtedness.

     "Affiliate" means, with respect to any specified Person, any other Person
who directly or indirectly through one or more intermediaries controls, or is
controlled by, or is under common control with, such specified Person. The term
"control" means the possession, directly or indirectly, of the power to direct
or cause the direction of the management and policies of a Person, whether
through the ownership of voting securities, by contract or otherwise; and the
terms "controlling" and "controlled" have meanings correlative of the foregoing.

     "Asset Acquisition" means (1) an Investment by RailWorks or any Restricted
Subsidiary of RailWorks in any other Person pursuant to which such Person shall
become a Restricted Subsidiary of RailWorks or any Restricted Subsidiary of
RailWorks, or shall be merged with or into RailWorks or any Restricted
Subsidiary of RailWorks, or (2) the acquisition by RailWorks or any Restricted
Subsidiary of RailWorks of the assets of any Person, other than a Restricted
Subsidiary of RailWorks, which constitute all or substantially all of the assets
of such Person or comprises any division or line of business of such Person or
any other properties or assets of such Person other than in the ordinary course
of business.

     "Asset Sale" means any direct or indirect sale, issuance, conveyance,
transfer, lease (other than operating leases entered into in the ordinary course
of business), assignment or other transfer for value by RailWorks or any of its
Restricted Subsidiaries, including any Sale and Leaseback Transaction, to any
Person other than the Company or a Restricted Subsidiary of RailWorks of: (1)
any Capital Stock of any Restricted Subsidiary of RailWorks; or (2) any other
property or assets of RailWorks or any Restricted Subsidiary of RailWorks other
than in the ordinary course of business; provided, however, that asset sales or
other dispositions shall not include: (a) a transaction or series of related
transactions for which RailWorks or its Restricted Subsidiaries receive
aggregate consideration of less than $1.0 million; (b) the sale, lease,
conveyance, disposition or other transfer of all or substantially all of the
assets of RailWorks as permitted under "Merger, Consolidation and Sale of
Assets"; (c) a transaction constituting a Restricted Payment permitted under
"-- Restricted Payments" above; (d) sales of obsolete, worn out, damaged or used
equipment in the ordinary course of business; (e) sales of equipment or
inventory in the ordinary course of business; (f) any Permitted Investment; and
(g) granting of Liens as permitted under "Limitation on Liens" above.

     "Borrowing Base" means the sum of (i) 85% of the net book value (after
allowance for doubtful accounts) of accounts receivable (other than intercompany
receivables) of RailWorks and the Restricted Subsidiaries arising in the
ordinary course of business from the sale of
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<PAGE>   99

products sold by RailWorks and the Restricted Subsidiaries or the provision of
services by RailWorks and the Restricted Subsidiaries and (ii) 60% of the net
book value (after appropriate write-downs of obsolescence, quality problems and
the like) of inventories of RailWorks and the Restricted Subsidiaries held in
the ordinary course of business, calculated in each case on a consolidated basis
with the Restricted Subsidiaries in accordance with GAAP.

     "Board Resolution" means, with respect to any Person, a copy of a
resolution certified by the Secretary or an Assistant Secretary of such Person
to have been duly adopted by the Board of Directors of such Person and to be in
full force and effect on the date of such certification, and delivered to the
trustee.

     "Capitalized Lease Obligation" means, as to any Person, the obligations of
such Person under a lease that are required to be classified and accounted for
as capital lease obligations under GAAP and, for purposes of this definition,
the amount of such obligations at any date shall be the capitalized amount of
such obligations at such date, determined in accordance with GAAP.

     "Capital Stock" means:

          (1) with respect to any Person that is a corporation, any and all
     shares, interests, participations or other equivalents (however designated
     and whether or not voting) of corporate stock, including each class of
     Common Stock and Preferred Stock of such Person; and

          (2) with respect to any Person that is not a corporation, any and all
     partnership, membership or other equity interests of such Person.

     "Cash Equivalents" means:

          (1) marketable direct obligations issued by, or unconditionally
     guaranteed by, the United States Government or issued by any agency thereof
     and backed by the full faith and credit of the United States, in each case
     maturing within one year from the date of acquisition thereof;

          (2) marketable direct obligations issued by any state of the United
     States of America or any political subdivision of any such state or any
     public instrumentality thereof maturing within one year from the date of
     acquisition thereof and, at the time of acquisition, having one of the two
     highest ratings obtainable from either Standard & Poor's Ratings Group
     ("S&P") or Moody's Investors Service, Inc. ("Moody's");

          (3) commercial paper maturing no more than one year from the date of
     creation thereof and, at the time of acquisition, having a rating of at
     least A-1 from S&P or at least P-1 from Moody's;

          (4) certificates of deposit or bankers' acceptances maturing within
     one year from the date of acquisition thereof issued by any bank organized
     under the laws of the United States of America or any state thereof or the
     District of Columbia or any U.S. branch of a foreign bank having at the
     date of acquisition thereof combined capital and surplus of not less than
     $250,000,000;

          (5) repurchase obligations with a term of not more than seven days for
     underlying securities of the types described in clause (1) above entered
     into with any bank meeting the qualifications specified in clause (4)
     above; and

          (6) investments in money market funds which invest substantially all
     their assets in securities of the types described in clauses (1) through
     (5) above.

     "Change of Control" means the occurrence of one or more of the following
events:

          (1) any sale, lease, exchange or other transfer (in one transaction or
     a series of related transactions) of all or substantially all of the assets
     of RailWorks to any Person or group of
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<PAGE>   100

     related Persons for purposes of Section 13(d) of the Exchange Act, called a
     "Group", together with any Affiliates thereof, whether or not otherwise in
     compliance with the provisions of the indenture;

          (2) the approval by the holders of Capital Stock of RailWorks of any
     plan or proposal for the liquidation or dissolution of RailWorks, whether
     or not otherwise in compliance with the provisions of the indenture;

          (3) any Person or Group shall become the owner, directly or
     indirectly, beneficially or of record, of shares representing more than 50%
     of the aggregate ordinary voting power represented by the issued and
     outstanding Capital Stock of RailWorks; or

          (4) the replacement of a majority of the RailWorks board of directors
     over any consecutive two-year period from the directors who constituted the
     RailWorks board of directors at the beginning of such period, and such
     replacement shall not have been approved by a vote of at least a majority
     of the RailWorks board of directors then still in office who either were
     members of such board of directors at the beginning of such period or whose
     election as a member of such board of directors was previously so approved.

     "Common Stock" of any Person means any and all shares, interests or other
participations in, and other equivalents (however designated and whether voting
or non-voting) of such Person's common stock, whether outstanding on April 7,
1999 or issued after April 7, 1999, and includes, without limitation, all series
and classes of such common stock.

     "Consolidated EBITDA" means, with respect to any Person, for any period,
the sum (without duplication) of:

          (1) Consolidated Net Income; and

          (2) to the extent Consolidated Net Income has been reduced thereby,

             (a) all income taxes of such Person and its Restricted Subsidiaries
        paid or accrued in accordance with GAAP for such period (other than
        income taxes attributable to extraordinary, unusual or nonrecurring
        gains or losses or taxes attributable to sales or dispositions outside
        the ordinary course of business);

             (b) Consolidated Interest Expense; and

             (c) Consolidated Non-cash Charges less any non-cash items
        increasing Consolidated Net Income for such period, all as determined on
        a consolidated basis for such Person and its Restricted Subsidiaries in
        accordance with GAAP.

     "Consolidated Fixed Charge Coverage Ratio" means, with respect to any
Person, the ratio of (a) Consolidated EBITDA of such Person during the four full
fiscal quarters (the "Four Quarter Period") ending prior to the date of the
transaction giving rise to the need to calculate the Consolidated Fixed Charge
Coverage Ratio for which financial statements are available, that date being the
"Transaction Date", to (b) Consolidated Fixed Charges of such Person for the
Four Quarter Period. In addition to and without limitation of the foregoing, for
purposes of this definition, "Consolidated EBITDA" and "Consolidated Fixed
Charges" shall be calculated after giving effect on a pro forma basis for the
period of such calculation to:

          (1) the incurrence, repayment or retirement of any Indebtedness of
     such Person or any of its Restricted Subsidiaries (and the application of
     the proceeds thereof) giving rise to the need to make such calculation and
     any incurrence or repayment of other Indebtedness (and the application of
     the proceeds thereof), other than the incurrence or repayment of
     Indebtedness in the ordinary course of business for working capital
     purposes pursuant to any revolving Credit Agreement, occurring during the
     Four Quarter Period or at any time subsequent to the last day of the Four
     Quarter Period and on or prior to the Transaction

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<PAGE>   101

     Date, as if such incurrence, repayment or retirement, as the case may be
     (and the application of the proceeds thereof), occurred on the first day of
     the Four Quarter Period; and

          (2) any Asset Sales or Asset Acquisitions (including, without
     limitation, any Asset Acquisition giving rise to the need to make such
     calculation as a result of such Person or one of its Restricted
     Subsidiaries (including any Person who becomes a Restricted Subsidiary as a
     result of the Asset Acquisition) incurring, assuming or otherwise being
     liable for Acquired Indebtedness and also including any Consolidated EBITDA
     (including any pro forma expense and cost reductions calculated on a basis
     consistent with Regulation S-X of the Exchange Act) attributable to the
     assets which are the subject of the Asset Acquisition or asset sale or
     other disposition during the Four Quarter Period) occurring during the Four
     Quarter Period or at any time subsequent to the last day of the Four
     Quarter Period and on or prior to the Transaction Date, as if such Asset
     Sale or Asset Acquisition, including the incurrence, assumption or
     liability for any such Acquired Indebtedness, occurred on the first day of
     the Four Quarter Period. If such Person or any of its Restricted
     Subsidiaries directly or indirectly guarantees Indebtedness of a third
     Person, the preceding sentence shall give effect to the incurrence of such
     guaranteed Indebtedness as if such Person or any Restricted Subsidiary of
     such Person had directly incurred or otherwise assumed such guaranteed
     Indebtedness. For purposes of calculating the Consolidated Fixed Charge
     Coverage Ratio only, clause (c) of the definition of Asset Sale shall not
     be given effect to the extent it relates to a dividend or distribution in
     respect of shares of the RailWorks Capital Stock consisting of shares of
     Capital Stock of a Restricted Subsidiary of RailWorks.

     Furthermore, in calculating "Consolidated Fixed Charges" for purposes of
determining the denominator (but not the numerator) of this "Consolidated Fixed
Charge Coverage Ratio":

          (1) interest on outstanding Indebtedness determined on a fluctuating
     basis as of the Transaction Date and which will continue to be so
     determined thereafter shall be deemed to have accrued at a fixed rate per
     annum equal to the rate of interest on such Indebtedness in effect on the
     Transaction Date;

          (2) notwithstanding clause (1) above, interest on Indebtedness
     determined on a fluctuating basis, to the extent such interest is covered
     by agreements relating to Interest Swap Obligations, shall be deemed to
     accrue at the rate per annum resulting after giving effect to the operation
     of such agreements; and

          (3) if interest on any Indebtedness actually incurred on the
     Transaction Date may optionally be determined at an interest rate based
     upon a factor of a prime or similar rate, a eurocurrency interbank offered
     rate; or other rates, then the interest rate in effect on the Transaction
     Date will be deemed to have been in effect during the Four Quarter Period.

     "Consolidated Fixed Charges" means, with respect to any Person for any
period, the sum, without duplication, of:

          (1) Consolidated Interest Expense; plus

          (2) the product of (x) the amount of all dividend payments on any
     series of Preferred Stock of such Person and, to the extent permitted under
     the Indenture, its Restricted Subsidiaries (other than dividends paid in
     Qualified Capital Stock) paid or accrued during such period times (y) a
     fraction, the numerator of which is one and the denominator of which is one
     minus the then current effective consolidated federal, state and local tax
     rate of such Person, expressed as a decimal, provided that Consolidated
     Fixed Charges shall not include (x) gain or loss from the extinguishment of
     debt, including, without limitation, write-off of debt issuance costs,
     commissions, fees and expenses, (y) amortization of customary debt issuance
     costs, commissions, fees and expenses or (z) customary commitment,
     administrative and transaction fees or charges.

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<PAGE>   102

     "Consolidated Interest Expense" means, with respect to any Person for any
period, the sum of, without duplication:

          (1) the aggregate of the interest expense of such Person and its
     Restricted Subsidiaries for such period determined on a consolidated basis
     in accordance with GAAP, including without limitation: (a) any amortization
     of debt discount and amortization or write-off deferred financing costs;
     (b) the net costs under Interest Swap Obligations; (c) all capitalized
     interest; and (d) the interest portion of any deferred payment obligation;
     and

          (2) the interest component of Capitalized Lease Obligations paid or
     accrued by such Person and its Restricted Subsidiaries during such period
     as determined on a consolidated basis in accordance with GAAP.

     "Consolidated Net Income" means, with respect to any Person, for any
period, the aggregate net income (or loss) of such Person and its Restricted
Subsidiaries for such period on a consolidated basis, determined in accordance
with GAAP; provided that there shall be excluded therefrom:

          (1) after-tax gains or losses (to the extent such losses are non-cash
     losses) from Asset Sales (without regard to the $1,000,000 limitation set
     forth in the definition thereof) or abandonments or reserves relating
     thereto;

          (2) after-tax items classified as extraordinary or nonrecurring gains
     or losses (to the extent such losses are non-cash losses);

          (3) solely for purposes of calculating Consolidated Net Income for the
     covenant described under "Limitation on Restricted Payments," the net
     income of any Person acquired in a "pooling of interests" transaction
     accrued prior to the date it becomes a Restricted Subsidiary of the
     referent Person or is merged or consolidated with the referent Person or
     any Restricted Subsidiary of the referent Person;

          (4) the net income (but not loss) of any Restricted Subsidiary of the
     referent Person to the extent that the declaration of dividends or similar
     distributions by that Restricted Subsidiary of that income is restricted by
     a contract, operation of law or otherwise, except to the extent that such
     net income is actually paid to the Company or one of its Restricted
     Subsidiaries through dividends, loans or otherwise;

          (5) the net income of any Person, other than a Restricted Subsidiary
     of the referent Person, except to the extent of cash dividends or
     distributions paid to the referent Person or to a Wholly Owned Restricted
     Subsidiary of the referent Person by such Person;

          (6) any restoration to income of any contingency reserve, except to
     the extent that provision for such reserve was made out of Consolidated Net
     Income accrued at any time following April 7, 1999;

          (7) income or loss attributable to discontinued operations (including,
     without limitation, operations disposed of during such period whether or
     not such operations were classified as discontinued); and

          (8) in the case of a successor to the referent Person by consolidation
     or merger or as a transferee of the referent Person's assets, any earnings
     of the successor corporation prior to such consolidation, merger or
     transfer of assets.

     "Consolidated Net Worth" of any Person means the consolidated stockholders'
equity of such Person, determined on a consolidated basis in accordance with
GAAP, less (without duplication) amounts attributable to Disqualified Capital
Stock of such Person.

     "Consolidated Non-Cash Charges" means, with respect to any Person, for any
period, (a) the sum of (i) the aggregate depreciation, amortization (including
amortization of goodwill and

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<PAGE>   103

other intangibles) and other non-cash expenses of such Person and its Restricted
Subsidiaries reducing Consolidated Net Income of such Person and its Restricted
Subsidiaries for such period, (ii) expenses and charges relating to any equity
offering or incurrence of Indebtedness permitted to be incurred by the
Indenture, (iii) the amount of any restructuring charge or reserve, (iv)
unrealized gains and losses from hedging, foreign currency or commodities
translations and transactions, and (v) the amount of any reduction representing
a minority interest in Guarantors, minus (b) any cash payment with respect to
which a charge or reserve referred to in clause (a) was taken in a prior period,
in each case, determined on a consolidated basis in accordance with GAAP
(excluding any such charges constituting an extraordinary item or loss or any
such charge which requires an accrual of or a reserve for cash payments for any
future period).

     "Credit Agreement" means the Credit Agreement, dated as of August 4, 1998,
as amended, among RailWorks, the lenders party thereto in their capacities as
lenders thereunder and Nationsbank N.A., as agent, together with the related
documents thereto (including, without limitation, any guarantee agreements and
security documents), in each case as such agreements may be amended (including,
any amendment and restatement thereof), supplemented or otherwise modified in
any manner from time to time, including any agreement extending the maturity of,
refinancing, replacing, extending the maturity of or restructuring (including
increasing the amount of available borrowings thereunder or adding Restricted
Subsidiaries of RailWorks as additional borrowers or guarantors thereunder) all
or any portion of the Indebtedness under such agreement or any successor or
replacement agreement and whether by the same or any other agent, lender or
group of lenders.

     "Currency Agreement" means any foreign exchange contract, currency swap
agreement or other similar agreement or arrangement designed to protect the
Company or any Restricted Subsidiary of RailWorks against fluctuations in
currency values.

     "Default" means an event or condition the occurrence of which is, or with
the lapse of time or the giving of notice or both would be, an Event of Default.

     "Designated Senior Debt" means (1) Indebtedness under or in respect of the
Credit Agreement and (2) any other Indebtedness constituting Senior Debt which,
at the time of determination, has an aggregate principal amount of at least
$25.0 million and is specifically designated in the instrument evidencing such
Senior Debt as "Designated Senior Debt" by RailWorks.

     "Disqualified Capital Stock" means that portion of any Capital Stock which,
by its terms (or by the terms of any security into which it is convertible or
for which it is exchangeable at the option of the holder thereof), or upon the
happening of any event (other than an event which would constitute a Change of
Control), matures or is mandatorily redeemable, pursuant to a sinking fund
obligation or otherwise, or is redeemable at the sole option of the holder
thereof (except, in each case, upon the occurrence of a Change of Control) on or
prior to the final maturity date of the notes.

     "Exchange Act" means the Securities Exchange Act of 1934, as amended, or
any successor statute or statutes thereto.

     "Fair market value" means, with respect to any asset or property, the price
which could be negotiated in an arm's-length, free market transaction, for cash,
between a willing seller and a willing and able buyer, neither of whom is under
undue pressure or compulsion to complete the transaction. Fair market value
shall be determined by the RailWorks board of directors acting reasonably and in
good faith and shall be evidenced by a Board Resolution of the RailWorks board
of directors delivered to the trustee.

     "GAAP" means generally accepted accounting principles set forth in the
opinions and pronouncements of the Accounting Principles Board of the American
Institute of Certified Public Accountants and statements and pronouncements of
the Financial Accounting Standards Board or
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in such other statements by such other entity as may be approved by a
significant segment of the accounting profession of the United States, which are
in effect as of the April 7, 1999.

     "Guarantee" means the guarantee of the Obligations of RailWorks with
respect to the notes by each Guarantor pursuant to the terms of the indenture.

     "Guarantor" means: (1) each of the domestic Restricted Subsidiaries of
RailWorks as of the Issue Date and (2) each of the domestic Restricted
Subsidiaries of RailWorks that in the future executes a supplemental indenture
in which such Restricted Subsidiary agrees to be bound by the terms of the
indenture as a Guarantor; provided that any Person constituting a Guarantor as
described above shall cease to constitute a Guarantor when its respective
Guarantee is released in accordance with the terms of the indenture.

     "Guarantor Senior Debt" means, with respect to any Guarantor: the principal
of, premium, if any, and interest (including any interest accruing subsequent to
the filing of a petition of bankruptcy at the rate provided for in the
documentation with respect thereto, whether or not such interest is an allowed
claim under applicable law) on any Indebtedness of a Guarantor, whether
outstanding on April 7, 1999 or thereafter created, incurred or assumed, unless,
in the case of any particular Indebtedness, the instrument creating or
evidencing the same or pursuant to which the same is outstanding expressly
provides that such Indebtedness shall not be senior in right of payment to the
Guarantee of such Guarantor. Without limiting the generality of the foregoing,
"Guarantor Senior Debt" shall also include the principal of, premium, if any,
interest (including any interest accruing subsequent to the filing of a petition
of bankruptcy at the rate provided for in the documentation with respect
thereto, whether or not such interest is an allowed claim under applicable law)
on, and all other amounts owing in respect of:

          (x) all monetary obligations of every nature of such Guarantor under
     the Credit Agreement, including, without limitation, obligations to pay
     principal and interest, reimbursement obligations under letters of credit,
     fees, expenses and indemnities;

          (y) all Interest Swap Obligations; and

          (z) all obligations under Currency Agreements;

in each case whether outstanding on April 7, 1999 or thereafter incurred.

     Notwithstanding the foregoing, "Guarantor Senior Debt" shall not include:

          (1) any Indebtedness of such Guarantor to a Restricted Subsidiary of
     such Guarantor or an Affiliate of such Guarantor or any of such Affiliate's
     subsidiaries;

          (2) Indebtedness to, or guaranteed on behalf of, any shareholder,
     director, officer or employee of such Guarantor or any Subsidiary of such
     Guarantor (including, without limitation, amounts owed for compensation);

          (3) Indebtedness to trade creditors and other amounts incurred in
     connection with obtaining goods, materials or services;

          (4) Indebtedness represented by Disqualified Capital Stock;

          (5) any liability for federal, state, local or other taxes owed or
     owing by such Guarantor;

          (6) that portion of any Indebtedness incurred in violation of the
     Indenture provisions set forth under "Limitation on Incurrence of
     Additional Indebtedness", but, as to any such obligation, no such violation
     shall be deemed to exist for purposes of this clause (6) if the holder(s)
     of such obligation or their representative and the trustee shall have
     received an officers' certificate of RailWorks to the effect that the
     incurrence of such Indebtedness does not, or, in the case of revolving
     credit indebtedness, that the incurrence of the entire committed amount
     thereof at the date on which the initial borrowing thereunder is made would
     not, violate such provisions of the indenture;
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<PAGE>   105

          (7) Indebtedness which, when incurred and without respect to any
     election under Section 1111(b) of Title 11, United States Code, is without
     recourse to RailWorks; and

          (8) any Indebtedness which is, by its express terms, subordinated in
     right of payment to any other Indebtedness of such Guarantor.

     "Indebtedness" means with respect to any Person, without duplication:

          (1) all Obligations of such Person for borrowed money;

          (2) all Obligations of such Person evidenced by bonds, debentures,
     notes or other similar instruments;

          (3) all Capitalized Lease Obligations of such Person;

          (4) all Obligations of such Person issued or assumed as the deferred
     purchase price of property, all conditional sale obligations and all
     Obligations under any title retention agreement (but excluding trade
     accounts payable and other accrued liabilities arising in the ordinary
     course of business);

          (5) all Obligations for the reimbursement of any obligor on any letter
     of credit, banker's acceptance or similar credit transaction;

          (6) guarantees and other contingent obligations in respect of
     Indebtedness referred to in clauses (1) through (5) above and clause (8)
     below;

          (7) all Obligations of any other Person of the type referred to in
     clauses (1) through (6) which are secured by any lien on any property or
     asset of such Person, the amount of such Obligation being deemed to be the
     lesser of the fair market value of such property or asset or the amount of
     the Obligation so secured;

          (8) all Obligations under Currency Agreements and Interest Swap
     Agreements of such Person; and

          (9) all Disqualified Capital Stock issued by such Person with the
     amount of Indebtedness represented by such Disqualified Capital Stock being
     equal to the greater of its voluntary or involuntary liquidation preference
     and its maximum fixed repurchase price, but excluding accrued dividends, if
     any.

     For purposes hereof, the "maximum fixed repurchase price" of any
Disqualified Capital Stock which does not have a fixed repurchase price shall be
calculated in accordance with the terms of such Disqualified Capital Stock as if
such Disqualified Capital Stock were purchased on any date on which Indebtedness
shall be required to be determined pursuant to the Indenture, and if such price
is based upon, or measured by, the fair market value of such Disqualified
Capital Stock, such fair market value shall be determined reasonably and in good
faith by the board of directors of the issuer of such Disqualified Capital
Stock.

     Notwithstanding the foregoing, "Indebtedness" shall not include (i) any
holdback or escrow of the purchase price for any assets or properties of any
Person, (ii) any contingent payment obligations incurred in connection with any
Asset Acquisition or otherwise, which are contingent on the performance of the
assets or properties acquired or (iii) obligations in the ordinary course of
business with respect to performance bonds, surety bonds, appeal bonds, security
deposits or similar obligations.

     "Independent Financial Advisor" means a firm: (1) which does not, and whose
directors, officers and employees or Affiliates do not, have a direct or
indirect financial interest in RailWorks; and (2) which, in the judgment of the
RailWorks board of directors, is otherwise independent and qualified to perform
the task for which it is to be engaged.

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<PAGE>   106

     "Interest Swap Obligations" means the obligations of any Person pursuant to
any arrangement with any other Person, whereby, directly or indirectly, such
Person is entitled to receive from time to time periodic payments calculated by
applying either a floating or a fixed rate of interest on a stated notional
amount in exchange for periodic payments made by such other Person calculated by
applying a fixed or a floating rate of interest on the same notional amount and
shall include, without limitation, interest rate swaps, caps, floors, collars
and similar agreements.

     "Investment" means, with respect to any Person, any direct or indirect loan
or other extension of credit (including, without limitation, a guarantee) or
capital contribution to (by means of any transfer of cash or other property to
others or any payment for property or services for the account or use of
others), or any purchase or acquisition by such Person of any Capital Stock,
bonds, notes, debentures or other securities or evidences of Indebtedness issued
by, any Person. "Investment" shall exclude extensions of trade credit by
RailWorks and its Restricted Subsidiaries on commercially reasonable terms in
accordance with normal trade practices of RailWorks or such Restricted
Subsidiary, as the case may be. If RailWorks or any Restricted Subsidiary of
RailWorks sells or otherwise disposes of any Common Stock of any direct or
indirect Restricted Subsidiary of RailWorks such that, after giving effect to
any such sale or disposition, RailWorks no longer owns, directly or indirectly,
100% of the outstanding Common Stock of such Restricted Subsidiary, RailWorks
shall be deemed to have made an Investment on the date of any such sale or
disposition equal to the fair market value of the Common Stock of such
Restricted Subsidiary not sold or disposed of.

     "Joint Venture" means any partnership, corporation or other entity, in
which up to and including 50% of the partnership interests, outstanding voting
stock or other equity interests is owned, directly or indirectly, by RailWorks
and/or one or more of its Restricted Subsidiaries.

     "Lien" means any lien, mortgage, deed of trust, pledge, security interest,
charge or encumbrance of any kind (including any conditional sale or other title
retention agreement, any lease in the nature thereof and any agreement to give
any security interest).

     "Net Cash Proceeds" means, with respect to any Asset Sale, the proceeds in
the form of cash or Cash Equivalents including payments in respect of deferred
payment obligations when received in the form of cash or Cash Equivalents (other
than the portion of any such deferred payment constituting interest) received by
RailWorks or any of its Restricted Subsidiaries from such Asset Sale net of:

          (1) reasonable out-of-pocket expenses and fees relating to such Asset
     Sale (including, without limitation, legal, accounting and investment
     banking fees and sales commissions);

          (2) taxes paid or required to be accrued in accordance with GAAP after
     taking into account any reduction in consolidated tax liability due to
     available tax credits or deductions and any tax sharing arrangements;

          (3) repayment of Indebtedness that is required to be repaid in
     connection with such Asset Sale; and

          (4) appropriate amounts to be provided by RailWorks or any Restricted
     Subsidiary, as the case may be, as a reserve, in accordance with GAAP,
     against any liabilities associated with such Asset Sale and retained by
     RailWorks or any Restricted Subsidiary, as the case may be, after such
     Asset Sale, including, without limitation, pension and other
     post-employment benefit liabilities, liabilities related to environmental
     matters and liabilities under any indemnification obligations associated
     with such Asset Sale.

     "Obligations" means all obligations for principal, premium, interest,
penalties, fees, indemnification, reimbursements, damages and other liabilities
payable under the documentation governing any Indebtedness.

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<PAGE>   107

     "Permitted Indebtedness" means, without duplication, each of the following:

          (1) Indebtedness under the existing notes issued on April 7, 1999 in
     an aggregate principal amount not to exceed $125.0 million and the related
     Guarantees;

          (2) Indebtedness incurred pursuant to the Credit Agreement or one or
     more other credit agreements in an aggregate principal amount at any time
     outstanding not to exceed the greater of (A) $100.0 million or (B) the
     Borrowing Base reduced, in either case, by any required permanent
     repayments under the Credit Agreement or any such other credit agreement
     actually made with the proceeds from Asset Sales (which in the case of a
     revolving Credit Agreement are accompanied by a corresponding permanent
     commitment reduction) thereunder;

          (3) other Indebtedness of RailWorks and its Restricted Subsidiaries
     outstanding on April 7, 1999 reduced by the amount of any scheduled
     amortization payments or mandatory prepayments when actually paid or
     permanent reductions thereon;

          (4) Interest Swap Obligations of RailWorks covering Indebtedness of
     RailWorks or any of its Restricted Subsidiaries and Interest Swap
     Obligations of any Restricted Subsidiary of RailWorks covering Indebtedness
     of such Restricted Subsidiary; provided, however, that such Interest Swap
     Obligations are entered into to protect RailWorks and its Restricted
     Subsidiaries from fluctuations in interest rates on Indebtedness incurred
     in accordance with the Indenture to the extent the notional principal
     amount of such Interest Swap Obligation does not exceed the principal
     amount of the Indebtedness to which such Interest Swap Obligation relates;

          (5) Indebtedness under Currency Agreements; provided that in the case
     of Currency Agreements which relate to Indebtedness, such Currency
     Agreements do not increase the Indebtedness of RailWorks and its Restricted
     Subsidiaries outstanding other than as a result of fluctuations in foreign
     currency exchange rates or by reason of fees, indemnities and compensation
     payable thereunder;

          (6) Indebtedness of a Wholly Owned Restricted Subsidiary of RailWorks
     to RailWorks or to a Wholly Owned Restricted Subsidiary of RailWorks for so
     long as such Indebtedness is held by RailWorks or a Wholly Owned Restricted
     Subsidiary of RailWorks, in each case subject to no Lien held by a Person
     other than RailWorks or a Wholly Owned Restricted Subsidiary of RailWorks;
     provided that if as of any date any Person other than RailWorks or a Wholly
     Owned Restricted Subsidiary of RailWorks owns or holds any such
     Indebtedness or holds a Lien in respect of such Indebtedness, such date
     shall be deemed the incurrence of Indebtedness not constituting Permitted
     Indebtedness by the issuer of such Indebtedness;

          (7) Indebtedness of RailWorks to a Wholly Owned Restricted Subsidiary
     of RailWorks for so long as such Indebtedness is held by a Wholly Owned
     Restricted Subsidiary of RailWorks, in each case subject to no Lien held by
     a Person other than a Wholly Owned Restricted Subsidiary; provided that (a)
     any Indebtedness of RailWorks to any Wholly Owned Restricted Subsidiary of
     RailWorks that is not a Guarantor is unsecured and subordinated, pursuant
     to a written agreement, to the RailWorks obligations under the indenture
     and the notes and (b) if as of any date any Person other than a Wholly
     Owned Restricted Subsidiary of RailWorks owns or holds any such
     Indebtedness or Lien in respect of such Indebtedness, such date shall be
     deemed the incurrence of Indebtedness not constituting Permitted
     Indebtedness by RailWorks;

          (8) Indebtedness arising from the honoring by a bank or other
     financial institution of a check, draft or similar instrument inadvertently
     (except in the case of daylight overdrafts) drawn against insufficient
     funds in the ordinary course of business; provided, however, that such
     Indebtedness is extinguished within five business days of incurrence;

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<PAGE>   108

          (9) Indebtedness of RailWorks or any of its Restricted Subsidiaries
     represented by letters of credit for the account of RailWorks or such
     Restricted Subsidiary, as the case may be, in order to provide security for
     workers' compensation claims, payment obligations in connection with
     self-insurance or similar requirements in the ordinary course of business;

          (10) Indebtedness represented by Capitalized Lease Obligations and
     Purchase Money Indebtedness of RailWorks and its Restricted Subsidiaries
     incurred in the ordinary course of business not to exceed at any one time
     outstanding the greater of (a) $5.0 million or (b) 5% of the Consolidated
     Net Worth of RailWorks and its Restricted Subsidiaries;

          (11) Indebtedness in respect of financed insurance premium obligations
     incurred in the ordinary course of business;

          (12) Refinancing Indebtedness;

          (13) Guarantees by RailWorks or a Guarantor of Indebtedness that was
     permitted to be incurred under the indenture; and

          (14) additional Indebtedness of RailWorks and its Restricted
     Subsidiaries in an aggregate principal amount not to exceed at any one time
     outstanding the greater of (a) $10.0 million or (b) 5% of the Consolidated
     Net Worth of RailWorks and its Restricted Subsidiaries.

     For purposes of determining compliance with the "Limitation on Incurrence
of Additional Indebtedness" covenant, in the event that an item of Indebtedness
meets the criteria of more than one of the categories of Permitted Indebtedness
described in clauses (1) through (14) above or is entitled to be incurred
pursuant to the Consolidated Fixed Charge Coverage Ratio provisions of such
covenant, RailWorks shall, in its sole discretion, classify (or later
reclassify) such item of Indebtedness in any manner that complies with this
covenant. Accrual of interest, accretion or amortization of original issue
discount, the payment of interest on any Indebtedness in the form of additional
Indebtedness with the same terms, and the payment of dividends on Disqualified
Capital Stock in the form of additional shares of the same class of Disqualified
Capital Stock will not be deemed to be an incurrence of Indebtedness or an
issuance of Disqualified Capital Stock for purposes of the "Limitations on
Incurrence of Additional Indebtedness" covenant.

     "Permitted Investments" means:

          (1) Investments by RailWorks or any Restricted Subsidiary of RailWorks
     in any Person that is or will become immediately after such Investment a
     Wholly Owned Restricted Subsidiary of RailWorks or that will merge or
     consolidate into RailWorks or a Wholly Owned Restricted Subsidiary of
     RailWorks;

          (2) Investments in RailWorks by any Restricted Subsidiary of
     RailWorks; provided that any Indebtedness evidencing such Investment to the
     extent held by a Restricted Subsidiary that is not a Guarantor is unsecured
     and subordinated, pursuant to a written agreement, to the obligations of
     RailWorks under the notes and the indenture;

          (3) Investments in cash and Cash Equivalents;

          (4) loans and advances to employees and officers of RailWorks and its
     Restricted Subsidiaries (A) in the ordinary course of business for bona
     fide business purposes not in excess of $1.0 million at any one time
     outstanding, (B) for reasonable travel and business expenses in the
     ordinary course of business for bona fide business purposes and (C) for
     reasonable relocation expenses in the ordinary course of business not in
     excess of $1.0 million at any one time outstanding;

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<PAGE>   109

          (5) Currency Agreements and Interest Swap Obligations entered into in
     the ordinary course of the business of RailWorks or of its Restricted
     Subsidiaries' businesses and otherwise in compliance with the indenture;

          (6) Investments in securities of trade creditors or customers received
     pursuant to any plan of reorganization or similar arrangement upon the
     bankruptcy or insolvency of such trade creditors or customers;

          (7) Investments made by RailWorks or its Restricted Subsidiaries as a
     result of consideration received in connection with an Asset Sale made in
     compliance with the "Limitation on Asset Sales" covenant;

          (8) Guarantees of Indebtedness otherwise permitted under the
     indenture;

          (9) Investments in Joint Ventures in an aggregate amount not to exceed
     $5.0 million at any one time outstanding; and

          (10) additional Investments not to exceed $5.0 million at any one time
     outstanding.

     "Permitted Liens" means the following types of Liens:

          (1) Liens for taxes, assessments or governmental charges or claims
     either (a) not delinquent or (b) contested in good faith by appropriate
     proceedings and as to which RailWorks or its Restricted Subsidiaries shall
     have set aside on its books such reserves as may be required pursuant to
     GAAP;

          (2) statutory Liens of landlords and Liens of carriers, warehousemen,
     mechanics, suppliers, materialmen, repairmen and other Liens imposed by law
     incurred in the ordinary course of business for sums not yet delinquent or
     being contested in good faith, if such reserve or other appropriate
     provision, if any, as shall be required by GAAP shall have been made in
     respect thereof;

          (3) Liens incurred or deposits made in the ordinary course of business
     in connection with workers' compensation, unemployment insurance and other
     types of social security, including any Lien securing letters of credit
     issued in the ordinary course of business consistent with past practice in
     connection therewith, or to secure the performance of tenders, statutory
     obligations, surety and appeal bonds, bids, leases, government contracts,
     performance and return-of-money bonds and other similar obligations
     (exclusive of obligations for the payment of borrowed money);

          (4) judgment Liens not giving rise to an Event of Default;

          (5) easements, rights-of-way, zoning restrictions and other similar
     charges or encumbrances in respect of real property not interfering in any
     material respect with the ordinary conduct of the business of RailWorks or
     any of its Restricted Subsidiaries;

          (6) any interest or title of a lessor under any Capitalized Lease
     Obligation; provided that such Liens do not extend to any property or
     assets which is not leased property subject to such Capitalized Lease
     Obligation;

          (7) purchase money Liens to finance property or assets of the Company
     or any Restricted Subsidiary of RailWorks acquired in the ordinary course
     of business; provided, however, that (a) the related purchase money
     Indebtedness shall not exceed the cost of such property or assets and shall
     not be secured by any property or assets of RailWorks or any Restricted
     Subsidiary of RailWorks other than the property and assets so acquired and
     (b) the Lien securing such Indebtedness shall be created within 90 days of
     such acquisition;

          (8) Liens upon specific items of inventory or other goods and proceeds
     of any Person securing such Person's obligations in respect of bankers'
     acceptances issued or created for

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<PAGE>   110

     the account of such Person to facilitate the purchase, shipment or storage
     of such inventory or other goods;

          (9) Liens securing reimbursement obligations with respect to
     commercial letters of credit which encumber documents and other property
     relating to such letters of credit and products and proceeds thereof;

          (10) Liens encumbering deposits made to secure obligations arising
     from statutory, regulatory, contractual, or warranty requirements of
     RailWorks or any of its Restricted Subsidiaries, including rights of offset
     and set-off;

          (11) Liens securing Interest Swap Obligations which Interest Swap
     Obligations relate to Indebtedness that is otherwise permitted under the
     indenture;

          (12) Liens securing Capitalized Lease Obligations and Purchase Money
     Indebtedness permitted pursuant to clause (10) of the definition of
     "Permitted Indebtedness"; provided, however, that in the case of Purchase
     Money Indebtedness (a) the Indebtedness shall not exceed the cost of such
     property or assets and shall not be secured by any property or assets of
     RailWorks or any Restricted Subsidiary of RailWorks other than the property
     and assets so acquired or constructed and (b) the Lien securing such
     Indebtedness shall be created within 180 days of such acquisition or
     construction or, in the case of a refinancing of any Purchase Money
     Indebtedness, within 180 days of such refinancing;

          (13) Liens securing Indebtedness under Currency Agreements;

          (14) Liens securing Acquired Indebtedness incurred in accordance with
     the "Limitation on Incurrence of Additional Indebtedness" covenant;
     provided that:

             (a) such Liens secured such Acquired Indebtedness at the time of
        and prior to the incurrence of such Acquired Indebtedness by RailWorks
        or a Restricted Subsidiary of RailWorks and were not granted in
        connection with, or in anticipation of, the incurrence of such Acquired
        Indebtedness by RailWorks or a Restricted Subsidiary of RailWorks; and

             (b) such Liens do not extend to or cover any property or assets of
        RailWorks or of any of its Restricted Subsidiaries other than the
        property or assets that secured the Acquired Indebtedness prior to the
        time such Indebtedness became Acquired Indebtedness of RailWorks or a
        Restricted Subsidiary of RailWorks and are no more favorable to the
        lienholders than those securing the Acquired Indebtedness prior to the
        incurrence of such Acquired Indebtedness by RailWorks or a Restricted
        Subsidiary of RailWorks; and

          (15) Liens not permitted by clauses (1) through (14) that are incurred
     in the ordinary course of business of RailWorks or any Restricted
     Subsidiary of RailWorks with respect to obligations that do not exceed $5.0
     million at any one time outstanding.

     "Person" means an individual, partnership, corporation, limited liability
company, unincorporated organization, trust or joint venture, or a governmental
agency or political subdivision thereof.

     "Preferred Stock" of any Person means any Capital Stock of such Person that
has preferential rights to any other Capital Stock of such Person with respect
to dividends or redemptions or upon liquidation.

     "Purchase Money Indebtedness" means Indebtedness of the Company and its
Restricted Subsidiaries incurred in the normal course of business for the
purpose of financing all or any part of the purchase price, or the cost of
installation, construction or improvement, of property or equipment.

     "Qualified Capital Stock" means any Capital Stock that is not Disqualified
Capital Stock.

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     "Refinance" means, in respect of any security or Indebtedness, to
refinance, extend, renew, refund, repay, prepay, redeem, defease or retire, or
to issue a security or Indebtedness in exchange or replacement for, such
security or Indebtedness in whole or in part. "Refinanced" and "Refinancing"
shall have correlative meanings.

     "Refinancing Indebtedness" means any Refinancing by RailWorks or any
Restricted Subsidiary of RailWorks of Indebtedness incurred in accordance with
the ratio under the "Limitation on Incurrence of Additional Indebtedness"
covenant or pursuant to clause (1), (3), or (11) of the definition of Permitted
Indebtedness), in each case that does not:

          (1) result in an increase in the aggregate principal amount of the
     Indebtedness of such Person being Refinanced (plus the amount of any
     premium required to be paid under the terms of the instrument governing
     such Indebtedness and plus the amount of reasonable expenses incurred by
     RailWorks in connection with such Refinancing); or

          (2) create Indebtedness with: (a) a Weighted Average Life to Maturity
     that is less than the Weighted Average Life to Maturity of the Indebtedness
     being Refinanced; or (b) a final maturity earlier than the final maturity
     of the Indebtedness being Refinanced; provided that (x) if such
     Indebtedness being Refinanced is Indebtedness of RailWorks, then such
     Refinancing Indebtedness shall be Indebtedness of RailWorks or any
     Restricted Subsidiary that is a Guarantor and (y) if such Indebtedness
     being Refinanced is subordinate or junior to the notes, then such
     Refinancing Indebtedness shall be subordinate to the notes at least to the
     same extent and in the same manner as the Indebtedness being Refinanced.

     "Representative" means the indenture trustee or other trustee, agent or
representative in respect of any Designated Senior Debt; provided that if, and
for so long as, any Designated Senior Debt lacks such a representative, then the
Representative for such Designated Senior Debt shall at all times constitute the
holders of a majority in outstanding principal amount of such Designated Senior
Debt in respect of any Designated Senior Debt.

     "Restricted Subsidiary" of any Person means any Subsidiary of such Person
which at the time of determination is not an Unrestricted Subsidiary.

     "Sale and Leaseback Transaction" means any direct or indirect arrangement
with any Person or to which any such Person is a party, providing for the
leasing to RailWorks or a Restricted Subsidiary of any property, whether owned
by RailWorks or any Restricted Subsidiary at April 7, 1999 or later acquired,
which has been or is to be sold or transferred by RailWorks or such Restricted
Subsidiary to such Person or to any other Person from whom funds have been or
are to be advanced by such Person on the security of such Property.

     "Senior Debt" means the principal of, premium, if any, and interest
(including any interest accruing subsequent to the filing of a petition of
bankruptcy at the rate provided for in the documentation with respect thereto,
whether or not such interest is an allowed claim under applicable law) on any
Indebtedness of RailWorks, whether outstanding on April 7, 1999 or thereafter
created, incurred or assumed, unless, in the case of any particular
Indebtedness, the instrument creating or evidencing the same or pursuant to
which the same is outstanding expressly provides that such Indebtedness shall
not be senior in right of payment to the notes. Without limiting the generality
of the foregoing, "Senior Debt" shall also include the principal of, premium, if
any, interest (including any interest accruing subsequent to the filing of a
petition of bankruptcy at the rate provided for in the documentation with
respect thereto, whether or not such interest is an allowed claim under
applicable law) on, and all other amounts owing in respect of:

          (1) all monetary obligations of every nature of RailWorks under the
     Credit Agreement, including, without limitation, obligations to pay
     principal and interest, reimbursement obligations under letters of credit,
     fees, expenses and indemnities;

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<PAGE>   112

          (2) all Interest Swap Obligations; and

          (3) all obligations under Currency Agreements, in each case whether
     outstanding on the Issue Date or thereafter incurred.

     Notwithstanding the foregoing, "Senior Debt" shall not include:

          (1) any Indebtedness of RailWorks to a Restricted Subsidiary of
     RailWorks or any Affiliate of RailWorks or any of such Affiliate's
     Subsidiaries;

          (2) Indebtedness to, or guaranteed on behalf of, any shareholder,
     director, officer or employee of RailWorks or any Subsidiary of RailWorks
     (including, without limitation, amounts owed for compensation);

          (3) Indebtedness to trade creditors and other amounts incurred in
     connection with obtaining goods, materials or services;

          (4) Indebtedness represented by Disqualified Capital Stock;

          (5) any liability for federal, state, local or other taxes owed or
     owing by RailWorks;

          (6) that portion of any Indebtedness incurred in violation of the
     Indenture provisions set forth under "Limitation on Incurrence of
     Additional Indebtedness" (but, as to any such obligation, no such violation
     shall be deemed to exist for purposes of this clause (6) if the holder(s)
     of such obligation or their representative and the trustee shall have
     received an officers' certificate of RailWorks to the effect that the
     incurrence of such Indebtedness does not (or, in the case of revolving
     credit indebtedness, that the incurrence of the entire committed amount
     thereof at the date on which the initial borrowing thereunder is made would
     not) violate such provisions of the indenture);

          (7) Indebtedness which, when incurred and without respect to any
     election under Section 1111(b) of Title 11, United States Code, is without
     recourse to RailWorks; and

          (8) any Indebtedness which is, by its express terms, subordinated in
     right of payment to any other Indebtedness of RailWorks.

     "Significant Subsidiary", with respect to any Person, means any Restricted
Subsidiary of such Person that satisfies the criteria for a "significant
subsidiary" set forth in Rule 1.02(w) of Regulation S-X under the Securities
Act.

     "Subsidiary", with respect to any Person, means:

          (1) any corporation of which the outstanding Capital Stock having at
     least a majority of the votes entitled to be cast in the election of
     directors under ordinary circumstances shall at the time be owned, directly
     or indirectly, by such Person; or

          (2) any other Person of which at least a majority of the voting
     interest under ordinary circumstances is at the time, directly or
     indirectly, owned by such Person.

     "Unrestricted Subsidiary" of any Person means:

          (1) any Subsidiary of such Person that at the time of determination
     shall be or continue to be designated an Unrestricted Subsidiary by the
     board of directors of such Person in the manner provided below; and

          (2) any Subsidiary of an Unrestricted Subsidiary.

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<PAGE>   113

     The RailWorks board of directors may designate any Subsidiary (including
any newly acquired or newly formed Subsidiary) to be an Unrestricted Subsidiary
unless such Subsidiary owns any Capital Stock of, or owns or holds any Lien on
any property of, RailWorks or any other Subsidiary of RailWorks that is not a
Subsidiary of the Subsidiary to be so designated; provided that:

          (1) RailWorks certifies to the trustee that such designation complies
     with the "Limitation on Restricted Payments" covenant; and

          (2) each Subsidiary to be so designated and each of its Subsidiaries
     has not at the time of designation, and does not thereafter, create, incur,
     issue, assume, guarantee or otherwise become directly or indirectly liable
     with respect to any Indebtedness pursuant to which the lender has recourse
     to any of the assets of RailWorks or any of its Restricted Subsidiaries.

     The RailWorks board of directors may designate any Unrestricted Subsidiary
to be a Restricted Subsidiary only if:

          (1) immediately after giving effect to such designation, RailWorks is
     able to incur at least $1.00 of additional Indebtedness (other than
     Permitted Indebtedness) in compliance with the "Limitation on Incurrence of
     Additional Indebtedness" covenant; and

          (2) immediately before and immediately after giving effect to such
     designation, no Default or Event of Default shall have occurred and be
     continuing. Any such designation by the RailWorks board of directors shall
     be evidenced to the trustee by promptly filing with the trustee a copy of
     the Board Resolution giving effect to such designation and an officers'
     certificate certifying that such designation complied with the foregoing
     provisions.

     "Weighted Average Life to Maturity" means, when applied to any Indebtedness
at any date, the number of years obtained by dividing (a) the then outstanding
aggregate principal amount of such Indebtedness into (b) the sum of the total of
the products obtained by multiplying (i) the amount of each then remaining
installment, sinking fund, serial maturity or other required payment of
principal, including payment at final maturity, in respect thereof, by (ii) the
number of years (calculated to the nearest one-twelfth) which will elapse
between such date and the making of such payment.

     "Wholly Owned Restricted Subsidiary" of any Person means any Wholly Owned
Subsidiary of such Person which at the time of determination is a Restricted
Subsidiary of such Person.

     "Wholly Owned Subsidiary" of any Person means any Subsidiary of such Person
of which all the outstanding voting securities (other than in the case of a
foreign Subsidiary, directors' qualifying shares or an immaterial amount of
shares required to be owned by other Persons pursuant to applicable law) are
owned by such Person or any Wholly Owned Subsidiary of such Person.

                                       108
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                      EXCHANGE OFFER; REGISTRATION RIGHTS

     As part of the sale of the old notes to First Union Capital Markets
pursuant to the purchase agreement, dated September 23, 1999, among RailWorks
and the initial purchaser, the holder of the old notes became entitled to the
benefits of the registration rights agreement, dated as of September 30, 1999 by
and among RailWorks and the initial purchaser.

     Under the registration rights agreement, we have agreed:

     - to file a registration statement with the SEC with respect to a
       registered offer to exchange the old notes for new 11 1/2% Senior
       Subordinated Notes due 2009, having terms substantially identical in all
       material respects to the old notes, except that the new notes will not
       contain transfer restrictions, by November 13, 1999;

     - to use our reasonable best efforts to cause the registration statement to
       become effective under the Securities Act by [DATE], 1999;

     - to offer the new notes and the related guarantees in exchange for
       surrender of the old notes following the effective date of the
       registration statement; and

     - to use our reasonable best efforts to keep the exchange offer open for at
       least 30 days, or longer if required by applicable law, after the date
       that the notice of the exchange offer is mailed to the holders of the old
       notes.

     The exchange offer being made hereby, if consummated within the required
time periods, will satisfy our obligations under the registration rights
agreement. We understand that there are approximately twenty-seven record
holders of old notes. For each old note validly surrendered to us pursuant to
the exchange offer and not validly withdrawn, the holder will receive a new note
having a principal amount equal to that of the surrendered old note. Interest on
each old note will accrue (i) from the later of (A) the last interest payment
date on which interest was paid on the old note surrendered in exchange for the
new note or, (B) if the old note is surrendered for exchange on a date in a
period that includes the record date for an interest payment date to occur on or
after the date of the exchange and as to which interest will be paid, the date
of such interest payment date, or (ii) if no interest has been paid on the old
notes, from September 30, 1999.

     Under existing interpretations of the SEC contained in several no-action
letters to third parties, we believe that the new notes and the related
guarantees will be freely transferable by the holders, other than affiliates of
RailWorks, after the exchange offer without further registration under the
Securities Act; provided, however, that if you want to exchange your old notes
for new notes, you will be required to represent:

          (1) you have full power and authority to tender, sell, assign and
     transfer the old notes surrendered;

          (2) we will acquire good title to the old notes being surrendered,
     free and clear of all security interests, liens, restrictions, charges,
     encumbrances, conditional sale agreements or other obligations relating to
     their sale or transfer, and not subject to any adverse claim when we accept
     the old notes;

          (3) you are acquiring the new notes in the ordinary course of your
     business;

          (4) you are not engaging and do not intend to engage in a distribution
     of the new notes;

          (5) you have no arrangement or understanding with any person to
     participate in the distribution of the new notes;

          (6) you acknowledge and agree that if you are a broker-dealer
     registered under the Exchange Act or you are participating in the exchange
     offer for the purpose of distributing
                                       109
<PAGE>   115

     the new notes, you must comply with the registration and prospectus
     delivery requirements of the Securities Act in connection with a secondary
     resale of the new notes, and that you cannot rely on the position of the
     SEC's staff set forth in their no-action letters;

          (7) you understand that a secondary resale transaction described above
     and any resales of new notes obtained by you in exchange for old notes
     acquired by you directly from us should be covered by an effective
     registration statement containing the selling security holder information
     required by Item 507 or 508, as applicable, of Regulation S-K of the SEC;
     and

          (8) you are not an "affiliate", as defined in Rule 405 under the
     Securities Act, of RailWorks or any subsidiary guarantor, or, if you are an
     "affiliate," that you will comply with the registration and prospectus
     delivery requirements of the Securities Act to the extent applicable.

     We agree to make available, during the period required by the Securities
Act, a prospectus meeting the requirements of the Securities Act for use by
Participating Broker-Dealers and other persons, if any, with similar prospectus
delivery requirements for use in connection with any resale of new notes.

     If (1) because of any change in law or in currently prevailing
interpretations of the staff of the SEC, we are not permitted to effect an
exchange offer, (2) we do not complete the exchange offer by [DATE], 1999, (3)
under certain circumstances, some holders of unregistered new notes so request,
or (4) in the case of any holder that participates in the exchange offer, that
holder does not receive new notes on the date of the exchange that may be sold
without restriction under state and federal securities laws, other than due
solely to the status of that holder as an affiliate of RailWorks or within the
meaning of the Securities Act, then in each case, we will

     - promptly deliver to the holders and the trustee written notice of one of
       these changes and

     - at our sole expense, file a shelf registration statement covering resales
       of the old notes;

     - use our reasonable best efforts to keep the shelf registration statement
       effective until the earlier of April 7, 2001 or such time as all of the
       applicable old notes have been sold under the shelf registration
       statement.

     In the event that we file a shelf registration statement, we will provide
each holder with copies of the prospectus that is a part of the shelf
registration statement, notify each holder when the shelf registration statement
for the notes has become effective, and take some other actions that are
required to permit unrestricted resales of the notes. A holder that sells notes
pursuant to the shelf registration statement will be required to be named as a
selling security holder in the related prospectus and to deliver a prospectus to
purchasers, will be subject to certain of the civil liability provisions under
Securities Act in connection with such sales and will be bound by the provisions
of the registration rights agreement that are applicable to that kind of holder,
including certain indemnification rights and obligations.

     If we fail to comply with the above provisions or if the exchange offer
registration statement or the shelf registration statement fails to become
effective, then, as liquidated damages, we will pay "additional interest" on the
notes as follows:

          (1) if (A) neither the exchange offer registration statement nor the
     shelf registration statement is filed with the SEC on or prior to the
     applicable filing date or (B) despite the fact that we have consummated or
     will consummate an exchange offer, we are required to file a shelf
     registration statement and we do not file the shelf registration statement
     on or prior to the date required by the registration rights agreement, then
     commencing on the day after either such required filing date, additional
     interest will accrue on the principal amount of the notes at a yearly rate
     of 0.25% for the first 90 days immediately following each such

                                       110
<PAGE>   116

     filing date; the additional interest rate will increase by an additional
     0.25% per annum at the beginning of each subsequent 90-day period; or

          (2) if (A) neither the exchange offer registration statement nor a
     shelf registration statement is declared effective by the SEC on or prior
     to 150 days after the applicable filing date set forth in the registration
     rights agreement or (B) despite the fact that we have consummated or will
     consummate an exchange offer, we are required to file a shelf registration
     statement and the SEC does not declare the shelf registration statement
     effective on or prior to the 150th day following the date the shelf
     registration statement was filed, then, commencing on the day after either
     required effective date, additional interest will accrue on the principal
     amount of the note at a yearly rate of 0.25% for the first 90 days
     immediately following that required effective date; the additional interest
     rate will increase by an additional 0.25% per annum at the beginning of
     each subsequent 90-day period; or

          (3) if (A) we have not exchanged new notes for all old notes validly
     surrendered in accordance with the terms of the exchange offer on or prior
     to [DATE], 1999, or (B) if applicable, the shelf registration statement has
     been declared effective and the shelf registration statement ceases to be
     effective at any time prior to September 30, 2001, other than after such
     time as all notes have been disposed of under the shelf registration
     statement, then additional interest will accrue on the principal amount of
     the notes at a yearly rate of 0.25% for the first 90 days commencing on (x)
     the 36th day after the effective date, in the case of (A) above, or (y) the
     day the shelf registration statement ceases to be effective, in the case of
     (B) above; the additional interest rate will increase by an additional
     0.25% per annum at the beginning of each subsequent 90-day period;

provided, however, that the additional interest rate on the notes may not accrue
under more than one of the foregoing clauses (1) -- (3) at any one time and at
no time shall the aggregate amount of additional interest accruing exceed in the
aggregate 1.5% per year; provided, further, however, that (c) upon the filing of
the exchange offer registration statement or a shelf registration statement, in
the case of clause (1) above, (d) upon the effectiveness of the exchange offer
registration statement or a shelf registration statement, in the case of clause
(2) above, or (e) upon the exchange of new notes for all old notes surrendered,
in the case of clause (3)(A) above, or upon the effectiveness of the shelf
registration statement that had ceased to remain effective, in the case of
clause (3)(B) above, additional interest on the notes as a result of such
clause, or the relevant subclause of that clause, as the case may be, shall
cease to accrue.

     Any amounts of additional interest due pursuant to clause (1), (2) or (3)
above will be payable in cash on the same original interest payment dates as the
notes.

                                       111
<PAGE>   117

                         BOOK-ENTRY; DELIVERY AND FORM

     The new notes initially will be represented by one or more permanent global
certificates in definitive, fully registered form (the "Global notes"). The
Global notes will be deposited upon issuance with DTC and registered in the name
of a nominee of DTC.

THE GLOBAL NOTE

     We expect that pursuant to procedures established by DTC (1) upon the
issuance of the Global notes, DTC or its custodian will credit, on its internal
system, the principal amount at maturity of the individual beneficial interests
represented by such Global notes to the respective accounts of persons who have
accounts with such depositary and (2) ownership of beneficial interests in the
Global notes will be shown on, and the transfer of such ownership will be
effected only through, records maintained by DTC or its nominee (with respect to
interests of participants) and the records of participants (with respect to
interests of persons other than participants). Ownership of beneficial interests
in the Global notes will be limited to persons who have accounts with DTC
("participants") or persons who hold interests through participants. Holders may
hold their interests in the Global notes directly through DTC if they are
participants in DTC's system, or indirectly through organizations that are
participants in such system.

     So long as DTC, or its nominee, is the registered owner or holder of the
new notes, DTC or such nominee, as the case may be, will be considered the sole
owner or holder of the new notes represented by such Global notes for all
purposes under the indenture. No beneficial owner of an interest in the Global
notes will be able to transfer that interest except in accordance with DTC's
procedures, in addition to those provided for under the indenture with respect
to the new notes.

     Payments of the principal of, premium, if any, interest, including
additional interest, on, the Global notes will be made to DTC or its nominee as
the registered owner of the Global notes. None of RailWorks, the trustee or any
paying agent will have any responsibility or liability for any aspect of the
records relating to or payments made on account of beneficial ownership
interests in the Global notes or for maintaining, supervising or reviewing any
records relating to such beneficial ownership interest.

     We expect that DTC or its nominee, upon receipt of any payment of
principal, premium, if any, interest, including additional interest, on the
Global notes, will credit participants' accounts with payments in amounts
proportionate to their respective beneficial interests in the principal amount
of the Global notes as shown on the records of DTC or its nominee. We also
expect that payments by participants to owners of beneficial interests in the
Global notes held through such participants will be governed by standing
instructions and customary practice, as is now the case with securities held for
the accounts of customers registered in the names of nominees for such
customers. Such payments will be the responsibility of such participants.

     Transfers between participants in DTC will be effected in the ordinary way
through DTC's same-day funds system in accordance with DTC rules and will be
settled in same day funds. If a holder requires physical delivery of a
certificated security for any reason, including to sell new notes to persons in
states that require physical delivery of the new notes, or to pledge such
securities, such holder must transfer its interest in a Global note, in
accordance with the normal procedures of DTC and with the procedures set forth
in the indenture.

     DTC has advised us that it will take any action permitted to be taken by a
holder of new notes, including the presentation of new notes for exchange as
described below, only at the direction of one or more participants to whose
account the DTC interests in the Global notes are credited and only in respect
of such portion of the aggregate principal amount of notes as to which such
participant or participants has or have given such direction. However, if there
is an

                                       112
<PAGE>   118

Event of Default under the Indenture, DTC will exchange the Global notes for
certificated securities, which it will distribute to its participants.

     DTC has advised us as follows: DTC is a limited purpose trust company
organized under the laws of the State of New York, a member of the Federal
Reserve System, a "clearing corporation" within the meaning of the Uniform
Commercial Code and a "Clearing Agency" registered pursuant to the provisions of
Section 17A of the Exchange Act. DTC was created to hold securities for its
participants and facilitate the clearance and settlement of securities
transactions between participants through electronic book-entry changes in
accounts of its participants, thereby eliminating the need for physical movement
of certificates. Participants include securities brokers and dealers, banks,
trust companies and clearing corporations and certain other organizations.
Indirect access to the DTC system is available to others such as banks, brokers,
dealers and trust companies that clear through or maintain a custodial
relationship with a participant, either directly or indirectly.

     Although DTC has agreed to the foregoing procedures in order to facilitate
transfers of interests in the Global note among participants of DTC, it is under
no obligation to perform such procedures, and such procedures may be
discontinued at any time. Neither RailWorks nor the trustee will have any
responsibility for the performance by DTC or its participants or indirect
participants of their respective obligations under the rules and procedures
governing their operations.

CERTIFICATED SECURITIES

     Certificated securities will be issued in exchange for beneficial interests
in the Global notes (1) if requested by a holder of such interests or (2) if DTC
is at any time unwilling or unable to continue as a depositary for the Global
notes and a successor depositary is not appointed by RailWorks within 90 days.

                              PLAN OF DISTRIBUTION

     We are not using any underwriters for this exchange offer. We are also
bearing the expenses of the exchange.

     This prospectus, as it may be amended or supplemented from time to time,
may be used by a broker-dealer in connection with resales of any new notes
received in exchange for old notes acquired by such broker-dealer as a result of
market-making or other trading activities. Each such broker-dealer that receives
new notes for its own account in exchange for such old notes pursuant to the
exchange offer must acknowledge that it will deliver a prospectus in connection
with any resale of such new notes. We have agreed that for a period of up to 180
days after the registration statement is declared effective, we will make this
prospectus, as amended or supplemented, available to any such broker-dealer that
requests copies of this prospectus in the letter of transmittal for use in
connection with any such resale.

     We will not receive any proceeds from any sale of new notes by
broker-dealers or any other persons. New notes received by broker-dealers for
their own account pursuant to the exchange offer may be sold from time to time
in one or more transactions in the over-the-counter market, in negotiated
transactions or through the writing of options on the exchange notes, or a
combination of such methods of resale, at market prices prevailing at the time
of resale or negotiated prices. Any such resale may be made directly to
purchasers or to or through brokers or dealers who may receive compensation in
the form of commissions or concessions from any such broker-dealer and/or the
purchasers of any such exchange notes. Any broker-dealer that resells new notes
that were received by it for its own account pursuant to the exchange offer in
exchange for old notes acquired by such broker-dealer as a result of
market-making or other trading activities and any broker-dealer that
participates in a distribution of such new notes may

                                       113
<PAGE>   119

be deemed to be an "underwriter" within the meaning of the Securities Act. Any
profit on these resales of new notes and any commissions or concessions received
by any persons may be deemed to be underwriting compensation under the
Securities Act. The letter of transmittal states that by acknowledging that it
will deliver and by delivering a prospectus, a broker-dealer will not be deemed
to admit that it is an "underwriter" within the meaning of the Securities Act.

     We have agreed to pay all expenses incident to our performance of, or
compliance with, the registration rights agreement and will indemnify the
holders of old notes, including any broker-dealers, and certain parties related
to these holders, against various liabilities, including liabilities under the
Securities Act.

                                       114
<PAGE>   120

                CERTAIN UNITED STATES FEDERAL TAX CONSIDERATIONS

     THIS SUMMARY IS OF A GENERAL NATURE AND IS INCLUDED HEREIN SOLELY FOR
INFORMATIONAL PURPOSES. IT IS NOT INTENDED TO BE, NOR SHOULD IT BE CONSTRUED AS
BEING, LEGAL OR TAX ADVICE. WE MAKE NO REPRESENTATION WITH RESPECT TO THE
CONSEQUENCES TO ANY HOLDER OF THE NOTES. YOU SHOULD CONSULT YOUR OWN TAX
ADVISORS WITH RESPECT TO YOUR PARTICULAR CIRCUMSTANCES.

     The following discussion is a summary of certain United States federal
income tax considerations relevant to the exchange of old notes for new notes
pursuant to the exchange offer. The summary is based upon current provisions of
the Internal Revenue Code of 1986, as amended, judicial decisions, and
administrative interpretations, all of which are subject to change at any time
by legislative, judicial or administrative action. Any such changes may be
applied retroactively in a manner that could adversely affect a holder of the
notes. There can be no complete assurance that the Internal Revenue Service will
not challenge the conclusions stated below, and no ruling from the Internal
Revenue Service has been or will be sought on any of the matters discussed
below.

     The following discussion does not purport to be a complete analysis of all
the potential federal income tax consequences of exchanging old notes for new
notes, and, without limiting the generality of the foregoing, this summary does
not address the effect of any special rules applicable to certain types of
holders, including dealers in securities, insurance companies, financial
institutions, tax-exempt entities, persons owning notes through partnerships or
other pass-through entities, former citizens or residents of the United States
and persons who hold notes as part of a straddle, hedge, or conversion
transaction. In addition, this discussion is limited to holders who hold the
notes as capital assets within the meaning of Section 1221 of the Internal
Revenue Code. This discussion does not address the effect of any state, local,
or foreign tax laws.

     The exchange of old notes for new notes pursuant to the exchange offer will
not be treated as an "exchange" for federal income tax purposes because the new
notes do not differ materially in kind or extent from the old notes.
Accordingly, (i) holders will not recognize taxable gain or loss upon the
receipt of new notes in exchange for old notes in the exchange offer, (ii) the
holding period for a new note received in the exchange offer will include the
holding period of the old note surrendered in exchange for the new note, and
(iii) the adjusted tax basis of a new note immediately after the exchange will
be the same as the adjusted tax basis of the old note surrendered in exchange
for the new note.

     We recommend that you consult your own tax advisor as to the particular
consequences of exchanging your old notes for new notes, including the
applicability and effect of any state, local or foreign tax laws.

                                       115
<PAGE>   121

                                 LEGAL MATTERS

     The validity of the new notes will be passed upon for us by King &
Spalding, New York, New York.

                                    EXPERTS

     The financial statements of RailWorks Corporation and Subsidiaries, [THE
NEOSHO COMPANIES,] Mid West Railroad Construction and Maintenance Corporation of
Wyoming and F&V Metro Contracting Corp. and Affiliates included in this
prospectus and elsewhere in the registration statement have been audited by
Arthur Andersen LLP, independent public accountants, as indicated in their
reports with respect thereto, and are included herein in reliance upon the
authority of said firm as experts in giving said reports.

     The financial statements of Gantrex Group included in this prospectus and
elsewhere in the registration statement have been audited by Arthur Andersen
LLP, independent chartered accountants, as indicated in their report with
respect thereto, and are included herein in reliance upon the authority of said
firm as experts in giving said report.

                      WHERE YOU CAN FIND MORE INFORMATION

     RailWorks Corporation files annual, quarterly and other reports, proxy
statements and other information with the SEC. Our current SEC filings are
available to the public over the Internet at the SEC's web site at
http://www.sec.gov. You may also read and copy any document we file at the SEC's
public reference rooms in Washington, D.C., New York, New York and Chicago,
Illinois. Please call the SEC at 1-800-SEC-0330 for further information on the
public reference rooms.

     Because our common stock is listed on The Nasdaq National Market, our
reports, proxy statements and other information can be reviewed and copied at
the offices of The Nasdaq Stock Market, Inc. at 1735 K Street, N.W. Washington,
D.C. 20006-1506.

     We recommend that you review the following reports, which we have filed
with the SEC:

         Form 10-K for the year ended December 31, 1998
         Current Report on Form 8-K dated March 17, 1999
         Form 10-Q for the quarter ended March 31, 1999
         Form 10-Q for the quarter ended June 30, 1999

     You may request a copy of our SEC filings (without exhibits) at no cost, by
writing or telephoning us at the following address:

         RailWorks Corporation
         1104 Kenilworth Drive, Suite 301
         Baltimore, Maryland 21204
         (410) 512-0500

                                       116
<PAGE>   122

               SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

     This prospectus contains forward-looking statements within the meaning of
Section 27A of the Securities Act of 1933. You can find discussions containing
forward-looking statements in the "Prospectus Summary," the "Management's
Discussion and Analysis of Financial Condition and Results of Operation,"
"Business  -- Competitive Strengths," "Business  -- Strategy" and "Business
 -- Competition" sections, as well as within this prospectus generally. We use
the words "believes," "anticipates," "expects," "estimates," "plans," "intends"
and similar expressions so as to identify forward-looking statements. All
forward-looking statements involve substantial risks and uncertainties. There
may be events in the future that we are not accurately able to predict, or over
which we have no control. Some factors that may cause actual results to differ
from projected results are:

     - absence of a combined operating history of the operating companies and
       difficulties in integrating their operations;

     - unanticipated difficulties or delays in implementing our acquisition
       program;

     - cyclicality in the demand for rail system services and products;

     - availability of capital, including our ability to service or refinance
       indebtedness;

     - an unanticipated decrease in public sector contracts and funding;

     - changes in our relationships with major customers;

     - effects of changes in general economic conditions;

     - actions by competitors;

     - ability to retain qualified personnel; and

     - unanticipated costs, difficulties or delays in implementing our Year 2000
       compliance program.

     Forward-looking statements include, without limitation, our expectations
and estimates as to development of our services and products and expansion of
our customer base, future financial performance, including growth in revenues
and earnings and the effect on our finances of new acquisitions, cash flows from
operations, acquisitions, capital expenditures, the availability of funds from
credit facilities, the sale of securities and the cost and timely implementation
of our Year 2000 compliance modifications.

     Consequently, you should regard forward-looking statements only as our
current plans, estimates and beliefs. We do not promise to notify you if we
learn that our assumptions or projections are wrong for any reason. Before you
decide to exchange your notes, you should be aware that the factors we discuss
in the "Risk Factors" section and elsewhere in this prospectus could cause our
actual results to differ from what we have stated in any forward-looking
statements.
                             ---------------------

     Our principal executive offices are located at 1104 Kenilworth Drive, Suite
301, Baltimore, Maryland 21204. The telephone number at that address is (410)
512-0500.

                                       117
<PAGE>   123

                         INDEX TO FINANCIAL STATEMENTS

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<S>                                                           <C>
                         [TO COME]
</TABLE>

                                       F-1
<PAGE>   124

- ------------------------------------------------------
- ------------------------------------------------------

     NO DEALER, SALESPERSON OR OTHER INDIVIDUAL HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATION NOT CONTAINED IN THIS PROSPECTUS AND,
IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS
HAVING BEEN AUTHORIZED BY RAILWORKS. THIS PROSPECTUS DOES NOT CONSTITUTE AN
OFFER TO SELL OR A SOLICITATION OF AN OFFER TO BUY ANY OF THE SECURITIES OFFERED
HEREBY IN ANY JURISDICTION TO ANY PERSON TO WHOM IT IS UNLAWFUL TO MAKE SUCH
OFFER IN SUCH JURISDICTIONS. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY
SALE MADE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCE, CREATE ANY IMPLICATION THAT
THE INFORMATION HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO THE DATE HEREOF
OR THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF RAILWORKS SINCE SUCH DATE.

                               ------------------

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                        PAGE
                                        ----
<S>                                     <C>
Risk Factors..........................   10
Use of Proceeds.......................   18
Capitalization........................   19
Pro Forma Financial Information.......   20
Selected Historical Consolidated
  Financial Data......................   28
Management's Discussion and Analysis
  of Financial Condition and Results
  of Operations.......................   30
Business..............................   38
The Exchange Offer....................   52
Management............................   62
Certain Relationships and Related
  Party Transactions..................   67
Principal Stockholders................   69
Description of Capital Stock..........   70
Description of Credit Facility........   71
Description of the New Notes..........   73
Exchange Offer; Registration Rights...  109
Book-Entry; Delivery and Form.........  112
Plan of Distribution..................  113
Certain United States Federal Tax
  Considerations......................  115
Legal Matters.........................  116
Experts...............................  116
Where You Can Find More Information...  116
Special Note Regarding Forward-
  Looking Statements..................  117
Index to Financial Statements.........  F-1
</TABLE>

- ------------------------------------------------------
- ------------------------------------------------------
- ------------------------------------------------------
- ------------------------------------------------------

                               OFFER TO EXCHANGE

                                (RAILWORKS LOGO)
                          11 1/2% SENIOR SUBORDINATED
                                 NOTES DUE 2009
                           THAT HAVE BEEN REGISTERED
                                   UNDER THE
                             SECURITIES ACT OF 1933
                        FOR ALL OUTSTANDING UNREGISTERED
                          11 1/2% SENIOR SUBORDINATED
                                 NOTES DUE 2009
                              -------------------

                                   PROSPECTUS
                              -------------------
                               NOVEMBER   , 1999

- ------------------------------------------------------
- ------------------------------------------------------
<PAGE>   125

                                    PART II

                   INFORMATION NOT REQUIRED IN THE PROSPECTUS

ITEM 20.  INDEMNIFICATION OF DIRECTORS AND OFFICERS

     Section 102(b)(7) of the Delaware General Corporation Law (the "DGCL")
permits a corporation, in its certificate of incorporation, to limit or
eliminate, subject to some statutory limitations, the liability of directors to
the corporation or its stockholders for monetary damages for breaches of
fiduciary duty, except for liability (a) for any breach of the director's duty
of loyalty to the corporation or its stockholders, (b) for acts or omissions not
in good faith or which involve intentional misconduct or a knowing violation of
law, (c) under Section 174 of the DGCL, or (d) for any transaction from which
the director derived an improper personal benefit. Article 10 of the
registrant's restated Certificate of Incorporation provides that the personal
liability of directors of the registrant is eliminated to the fullest extent
permitted by Section 102(b)(7) of the DGCL.

     Under Section 145 of the DGCL, a corporation has the power to indemnify
directors and officers under certain prescribed circumstances and subject to
certain limitations against certain costs and expenses, including attorneys'
fees actually and reasonably incurred in connection with any action, suit or
proceeding, whether civil, criminal, administrative or investigative, to which
any of them is a party by reason of being a director or officer of the
corporation if it is determined that the director or officer acted in accordance
with the applicable standard of conduct set forth in such statutory provision.
Article 7 of the registrant's Bylaws provides that the registrant will indemnify
any person who was or is a party or is threatened to be made a party to any
threatened, pending or completed action, suit or proceeding by reason of the
fact that he is or was a director, officer, employee or agent of the registrant,
or is or was serving at the request of the registrant as a director, officer,
employee or agent of another entity, against certain liabilities, costs and
expenses. Article 7 further permits the registrant to maintain insurance on
behalf of any person who is or was a director, officer, employee or agent of the
registrant, or is or was serving at the request of the registrant as a director,
officer, employee or agent of another entity, against any liability asserted
against such person and incurred by such person in any such capacity or arising
out of his status as such, whether or not the registrant would have the power to
indemnify such person against such liability under the DGCL. The registrant
expects to maintain directors' and officers' liability insurance.

     The foregoing statements are subject to the detailed provisions of Article
10 of the registrant's restated Certificate of Incorporation.

     Pursuant to the Registration Rights Agreement, RailWorks has agreed to
indemnify holders of registrable notes against certain liabilities. Also
pursuant to the Registration Rights Agreement, RailWorks and certain
broker-dealers, including certain persons associated with such broker-dealers,
have agreed to indemnify each other against certain liabilities.

ITEM 21.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

     (a) Exhibits

<TABLE>
<CAPTION>
EXHIBIT
NUMBER                            DESCRIPTION OF EXHIBIT
- -------                           ----------------------
<C>       <C>  <S>
 3.1       --  Restated Certificate of Incorporation of RailWorks
               Corporation (incorporated by reference to Exhibit 3.1 to
               Registration Statement on Form S-1 (File No. 333-53483)).
 3.2       --  Bylaws of RailWorks Corporation (incorporated by reference
               to Exhibit 3.2 to Registration Statement on Form S-1 (File
               No. 333-53483)).
</TABLE>

                                      II-1
<PAGE>   126

<TABLE>
<CAPTION>
EXHIBIT
NUMBER                            DESCRIPTION OF EXHIBIT
- -------                           ----------------------
<C>       <C>  <S>
 3.3       --  Certificate of Designation of the Series A Convertible
               Preferred Stock (incorporated by reference to Exhibit 3.1 to
               the Registrant's Current Report on Form 8-K filed on October
               14, 1998).
 4.1       --  Specimen Common Stock Certificate (incorporated herein by
               reference to Exhibit 4.1 to Registration Statement on Form
               S-1, File No. 333-53483).
 4.3       --  Form of 11 1/2% Senior Subordinated Notes due 2009 (included
               in Exhibit 4.5).
 4.4       --  Certificate of Designation of the Series A Convertible
               Preferred Stock (incorporated by reference to Exhibit 3.1 to
               the Registrant's Current Report on Form 8-K filed on October
               14, 1998).
 4.5       --  Indenture, dated as of April 7, 1999 (the "Indenture") among
               RailWorks, the Guarantors named therein and First Union
               National Bank, as Trustee (incorporated by reference to
               Exhibit 4.5 to Registration Statement on Form S-4 (File No.
               333-79649)).
 4.6**     --  Registration Rights Agreement, dated as of September 30,
               1999, among RailWorks, the Guarantors named therein and
               First Union Capital Markets Corp., as Initial Purchaser.
 5.1**     --  Opinion of King & Spalding.
10.1       --  Uniform Provisions for the Acquisition of Founding Companies
               (incorporated by reference to Exhibit 10.1 to Registration
               Statement on Form S-1 (File No. 333-53483)).
10.2       --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Wildcats
               Alpha-Keystone Company, Alpha-Keystone Engineering, Inc. and
               the stockholders named therein (incorporated by reference to
               Exhibit 10.2 to Registration Statement on Form S-1 (File No.
               333-53483)).
10.3       --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Bulldog Comtrak
               Company, Comtrak Construction, Inc. and the stockholders
               named therein (incorporated by reference to Exhibit 10.3 to
               Registration Statement on Form S-1 (File No. 333-53483)).
10.4       --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Cardinal Annex
               Railroad Builders Company, Annex Railroad Builders, Inc. and
               the stockholders named therein (incorporated by reference to
               Exhibit 10.4 to Registration Statement on Form S-1 (File No.
               333-53483)).
10.5       --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Huskies Condon
               Brothers Company, Condon Brothers Inc. and the stockholders
               named therein (incorporated by reference to Exhibit 10.5 to
               Registration Statement on Form S-1 (File No. 333-53483)).
10.6       --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Commodores
               Concrete Company, CPI Concrete Products, Inc. and the
               stockholders named therein (incorporated by reference to
               Exhibit 10.6 to Registration Statement on Form S-1 (File No.
               333-53483)).
10.7       --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Nittany Lions
               McGinley Company, HP McGinley Inc. and the stockholders
               named therein (incorporated by reference to Exhibit 10.7 to
               Registration Statement on Form S-1 (File No. 333-53483)).
10.8       --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Owls Kennedy
               Railroad Builders Company, Kennedy Railroad Builders, Inc.
               and the stockholders named therein (incorporated by
               reference to Exhibit 10.8 to Registration Statement on Form
               S-1 (File No. 333-53483)).
</TABLE>

                                      II-2
<PAGE>   127

<TABLE>
<CAPTION>
EXHIBIT
NUMBER                            DESCRIPTION OF EXHIBIT
- -------                           ----------------------
<C>       <C>  <S>
10.9       --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Red Storm
               Comstock Company, Inc., L.K. Comstock & Company, Inc. and
               the stockholders named therein (incorporated by reference to
               Exhibit 10.9 to Registration Statement on Form S-1 (File No.
               333-53483)).
10.10      --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Sycamores Midwest
               Construction Company, Midwest Construction Services, Inc.
               and the stockholders named therein (incorporated by
               reference to Exhibit 10.10 to Registration Statement on Form
               S-1 (File No. 333-53483)).
10.11      --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Bears Merit
               Company, Merit Railroad Contractors, Inc. and the
               stockholders named therein (incorporated by reference to
               Exhibit 10.11 to Registration Statement on Form S-1 (File
               No. 333-53483)).
10.12      --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Hoosier Mize
               Company, Mize Construction Company and the stockholders
               named therein (incorporated by reference to Exhibit 10.12 to
               Registration Statement on Form S-1 (File No. 333-53483)).
10.13      --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Husky New England
               Railroad Construction Company, New England Railroad
               Construction Company Inc. and the stockholders named therein
               (incorporated by reference to Exhibit 10.13 to Registration
               Statement on Form S-1 (File No. 333-53483)).
10.14      --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Wolverines
               Northern Rail Services Company, Northern Rail Service and
               Supply Company, Inc. and the stockholders named therein
               (incorporated by reference to Exhibit 10.14 to Registration
               Statement on Form S-1 (File No. 333-53483)).
10.15      --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Big Orange
               Minnesota Company, Minnesota Railroad Service Company and
               the stockholders named therein (incorporated by reference to
               Exhibit 10.15 to Registration Statement on Form S-1 (File
               No. 333-53483)).
10.16      --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Buckeye Railcorp,
               Inc., Railcorp Inc. and the stockholders named therein
               (incorporated by reference to Exhibit 10.16 to Registration
               Statement on Form S-1 (File No. 333-53483)).
10.17      --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Runnin' Rebels
               Railroad Service Company, Railroad Service, Inc. and the
               stockholders named therein (incorporated by reference to
               Exhibit 10.17 to Registration Statement on Form S-1 (File
               No. 333-53483)).
10.18      --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Crusader Railroad
               Specialties Company, Railroad Specialties, Inc. and the
               stockholders named therein (incorporated by reference to
               Exhibit 10.18 to Registration Statement on Form S-1 (File
               No. 333-53483)).
10.19      --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Screaming Eagle
               Wood Preserving Company, Southern Indiana Wood Preserving
               Company, Inc. and the stockholders named therein
               (incorporated by reference to Exhibit 10.19 to Registration
               Statement on Form S-1 (File No. 333-53483)).
</TABLE>

                                      II-3
<PAGE>   128

<TABLE>
<CAPTION>
EXHIBIT
NUMBER                            DESCRIPTION OF EXHIBIT
- -------                           ----------------------
<C>       <C>  <S>
10.20      --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Fighting
               Irish-U.S. Railway Supply Company, U.S. Railway Supply, Inc.
               and the stockholders named therein (incorporated by
               reference to Exhibit 10.20 to Registration Statement on Form
               S-1 (File No. 333-53483)).
10.21      --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Spartans
               Trackworks Company, U.S. Trackworks, Inc. and the
               stockholders named therein (incorporated by reference to
               Exhibit 10.21 to Registration Statement on Form S-1 (File
               No. 333-53483)).
10.22      --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Mustang Smith
               Construction Company, Wm. A. Smith Construction Co., Inc.
               and the stockholders named therein (incorporated by
               reference to Exhibit 10.22 to Registration Statement on Form
               S-1 (File No. 333-53483)).
10.23      --  Agreement and Plan of Reorganization dated as of May 21,
               1998 by and between RailWorks Corporation, Longhorn Smith
               Rerailing Company, Wm. A. Smith Rerailing Services, Inc. and
               the stockholders named therein (incorporated by reference to
               Exhibit 10.23 to Registration Statement on Form S-1 (File
               No. 333-53483)).
10.24      --  Amended and Restated Employment Agreement between RailWorks
               Corporation and John G. Larkin dated as of August 4, 1998
               (incorporated by reference to Exhibit 10.1 to the
               Registrant's Quarterly Report on Form 10-Q filed on
               September 11, 1998).
10.25      --  Amended and Restated Employment Agreement between RailWorks
               Corporation and Michael R. Azarela dated as of August 4,
               1998 (incorporated by reference to Exhibit 10.2 to the
               Registrant's Quarterly Report on Form 10-Q filed on
               September 11, 1998).
10.26      --  Amended and Restated Employment Agreement between RailWorks
               Corporation and John Kennedy dated as of August 4, 1998
               (incorporated by reference to Exhibit 10.3 to the
               Registrant's Quarterly Report on Form 10-Q filed on
               September 11, 1998).
10.27      --  Amended and Restated Employment Agreement between RailWorks
               Corporation and Harold C. Kropp, Jr. dated as of August 4,
               1998 (incorporated by reference to Exhibit 10.4 to the
               Registrant's Quarterly Report on Form 10-Q filed on
               September 11, 1998).
10.28      --  Form of Employment Agreement between each Founding Company
               and Founding Company Officer (incorporated by reference to
               Exhibit 10.28 to the Registrant's Registration Statement on
               Form S-1 (File No. 333-53483)).
10.29      --  1998 Incentive Stock Plan (incorporated by reference to
               Exhibit 10.29 to the Registrant's Registration Statement on
               Form S-1 (File No. 333-53483)).
10.30      --  Indemnity and Cooperation Agreement dated as of April 3,
               1997 between Spie Enertrans S.A., Comstock Group, Inc., L.K.
               Comstock & Company and LKC Acquisition Corp., together with
               Memorandum of Understanding dated August 20, 1997 between
               Spie Enertrans S.A., Comstock Group, Inc., L.K. Comstock &
               Company and LKC Acquisition Corp. (incorporated by reference
               to Exhibit 10.30 to the Registrant's Registration Statement
               on Form S-1 (File No. 333-53483)).
10.31      --  Stock Purchase Agreement dated April 3, 1997 between
               Comstock Group, Inc. and LKC Acquisition Corp., as amended
               (incorporated by reference to Exhibit 10.31 to the
               Registrant's Registration Statement on Form S-1 (File No.
               333-53483)).
10.32      --  Contingent Promissory Note dated April 3, 1997 made by L.K.
               Comstock & Company, Inc. to the order of Spie Enertrans S.A.
               (incorporated by reference to Exhibit 10.32 to the
               Registrant's Registration Statement on Form S-1 (File No.
               333-53483)).
10.33      --  Employment Agreement dated as of January 7, 1999 between
               Robert D. Wolff and MidWest Railroad Construction and
               Maintenance Corporation of Wyoming (incorporated by
               reference to Exhibit 10.33 to the Registrant's Annual Report
               on Form 10-K filed on March 29, 1999).

</TABLE>

                                      II-4
<PAGE>   129

<TABLE>
<CAPTION>
EXHIBIT
NUMBER                            DESCRIPTION OF EXHIBIT
- -------                           ----------------------
<C>       <C>  <S>
10.34      --  Credit Agreement dated as of August 4, 1998 among RailWorks
               Corporation, as Borrower, Certain Subsidiaries, as
               Guarantors, the Lenders named therein, First Union National
               Bank, as Documentation Agent and NationsBank, N.A., as
               Administrative Agent (incorporated by reference to Exhibit
               10.34 to the Registrant's Annual Report on Form 10-K filed
               on March 29, 1999).
10.35      --  Amendment No. 1 to Credit Agreement dated December   , 1998
               among RailWorks Corporation, as Borrower, the Guarantors and
               Lenders named therein and NationsBank, N.A., as
               Administrative Agent (incorporated by reference to Exhibit
               10.35 to the Registrant's Annual Report on Form 10-K filed
               on March 29, 1999).
10.36      --  Amendment No. 2 to Credit Agreement dated February 2, 1999
               among RailWorks Corporation, and as Borrower, the Guarantors
               and Lenders named therein and NationsBank, N.A., as
               Administrative Agent (incorporated by reference to Exhibit
               10.36 to the Registrant's Annual Report on Form 10-K filed
               on March 29, 1999).
10.37      --  Credit Agreement dated as of February 2, 1999 among
               RailWorks Corporation, as Borrower, Certain Subsidiaries, as
               Guarantors, the Lenders named therein and NationsBank, N.A.,
               as Administrative Agent (incorporated by reference to
               Exhibit 10.37 to the Registrant's Annual Report on Form 10-K
               filed on March 29, 1999).
10.38      --  Employment Agreement between RailWorks Corporation and
               Kenneth R. Burk dated as of May 10, 1999 (incorporated by
               reference to Exhibit 10.1 to the Registrant's Quarterly
               Report on Form 10-Q filed on May 14, 1999).
10.39**    --  Amendment to Employment Agreement dated as of
                              , 1999 between RailWorks Corporation and
               Michael R. Azarela.
10.40**    --  Amendment to Employment Agreement dated as of
                              , 1999 between RailWorks Corporation and John
               G. Larkin.
12.1**     --  Computation of Ratio of Earnings to Fixed Charges.
21.1**     --  List of Subsidiaries.
23.1**     --  Consent of King & Spalding (included as part of its opinion
               filed as Exhibit 5.1).
23.2*      --  Consent of Arthur Andersen LLP.
23.3*      --  Consent of Arthur Andersen LLP (Canada).
24.1*      --  Powers of Attorney.
25.1**     --  Statement of Eligibility of Trustee on Form T-1
               (incorporated by reference to Exhibit 25.1 to Registration
               Statement on Form S-4 (File No. 333-79649)).
99.1*      --  Form of Letter of Transmittal for 11 1/2% Senior
               Subordinated Notes Due 2009.
99.2*      --  Form of Notice of Guaranteed Delivery for 11 1/2% Senior
               Subordinated Notes Due 2009.
99.3*      --  Guidelines for Certification of Taxpayer Identification
               Number on Substitute Form W-9.
99.4       --  Stock Exchange Agreement dated October 8, 1998 between the
               Registrant and BT Alex. Brown Incorporated (incorporated by
               reference to Exhibit 99.1 to the Registrant's Current Report
               on Form 8-K filed on October 14, 1998).
</TABLE>

- ---------------

 * Filed herewith.
** To be filed by amendment.

ITEM 22.  UNDERTAKINGS

     That, for purposes of determining any liability under the Securities Act of
1933, each filing of any Registrant's annual report pursuant to Section 13(a) or
Section 15(d) of the Securities
                                      II-5
<PAGE>   130

Exchange Act of 1934 (and, where applicable, each filing of an employee benefit
plan's annual report pursuant to Section 15(d) of the Securities Exchange Act of
1934) that is incorporated by reference in the Registration Statement shall be
deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.

     Insofar as indemnification for liabilities arising under the Securities Act
of 1993 may be permitted to directors, officers and controlling persons of the
registrants pursuant to the foregoing provisions, or otherwise, the registrants
have been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Act and is,
therefore, unenforceable. In the event that a claim for indemnification against
such liabilities (other than the payment by the registrants of expenses incurred
or paid by a director, officer or controlling person of the registrants in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the registrants will, unless in the opinion of their counsel the
matter has been settled by controlling precedent, submit to a court of
appropriate jurisdiction the question whether such indemnification by them is
against public policy as expressed in the Act and will be governed by the final
adjudication of such issue.

     The undersigned registrants hereby undertake to supply by means of a
post-effective amendment all information concerning a transaction, and the
company being acquired involved therein, that was not the subject of and
included in the registration statement when it became effective.

                                      II-6
<PAGE>   131

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          RAILWORKS CORPORATION

                                          By:      /s/ JOHN G. LARKIN
                                            ------------------------------------
                                                       John G. Larkin
                                                   Chairman of the Board
                                                and Chief Executive Officer

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, Chairman of the Board and Chief
Executive Officer of RailWorks, and Michael R. Azarela, Executive Vice
President, Chief Financial Officer and a Director of RailWorks, or either one of
them, and any agent for service named in this Registration Statement and each of
them, his or her true and lawful attorney-in-fact and agent, with full power of
substitution and resubstitution, for him or her and in his or her name, place
and stead, in any and all capacities, to sign any registration statement filed
pursuant to Rule 462(b) under the Securities Act of 1933, as amended and any and
all amendments (including post-effective amendments) to this Registration
Statement, and to file the same, with all exhibits thereto, and other documents
in connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, full power and
authority to do and perform each and every act and thing requisite or necessary
to be done in and about the premises, as fully to all intents and purposes as he
or she might or could do in person, hereby ratifying and confirming all that
said attorney-in-fact and agents or any of them, their, or his or her,
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with RailWorks Corporation, and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                  TITLE                   DATE
                      ---------                                  -----                   ----
<C>                                                    <S>                         <C>
                 /s/ JOHN G. LARKIN                    Chairman of the Board       November 1, 1999
- -----------------------------------------------------
                   John G. Larkin

               /s/ MICHAEL R. AZARELA                  Executive Vice President,   November 1, 1999
- -----------------------------------------------------    Chief Financial Officer
                 Michael R. Azarela                      and Director (Principal
                                                         Financial Officer)

                 /s/ HAROLD C. KROPP                   Vice President and Chief    November 1, 1999
- -----------------------------------------------------    Accounting Officer
                   Harold C. Kropp                       (Principal Accounting
                                                         Officer)

                  /s/ JOHN KENNEDY                     Vice President, Chief       November 1, 1999
- -----------------------------------------------------    Operating Officer --
                    John Kennedy                         Track Contractors and
                                                         Director
</TABLE>

                                      II-7
<PAGE>   132

<TABLE>
<CAPTION>
                      SIGNATURE                                  TITLE                   DATE
                      ---------                                  -----                   ----
<C>                                                    <S>                         <C>
                 /s/ SCOTT D. BRACE                    Director                    November 1, 1999
- -----------------------------------------------------
                   Scott D. Brace

                 /s/ KENNETH R. BURK                   Director                    November 1, 1999
- -----------------------------------------------------
                   Kenneth R. Burk

                /s/ RONALD W. DRUCKER                  Director                    November 1, 1999
- -----------------------------------------------------
                  Ronald W. Drucker

                  /s/ R. C. MATNEY                     Director                    November 1, 1999
- -----------------------------------------------------
                    R. C. Matney

                   /s/ DON TRAVISS                     Director                    November 1, 1999
- -----------------------------------------------------
                     Don Traviss
</TABLE>

                                      II-8
<PAGE>   133

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          ALPHA KEYSTONE ENGINEERING, INC.

                                          By:     /s/ FULTON J. KENNEDY
                                            ------------------------------------
                                                     Fulton J. Kennedy
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Alpha Keystone
Engineering, Inc., and Michael R. Azarela, Executive Vice President, Assistant
Secretary and a Director of Alpha Keystone Engineering, Inc., or either one of
them, and any agent for service named in this Registration Statement and each of
them, his or her true and lawful attorney-in-fact and agent, with full power of
substitution and resubstitution, for him or her and in his or her name, place
and stead, in any and all capacities, to sign any registration statement filed
pursuant to Rule 462(b) under the Securities Act of 1933, as amended and any and
all amendments (including post-effective amendments) to this Registration
Statement, and to file the same, with all exhibits thereto, and other documents
in connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, full power and
authority to do and perform each and every act and thing requisite or necessary
to be done in and about the premises, as fully to all intents and purposes as he
or she might or could do in person, hereby ratifying and confirming all that
said attorney-in-fact and agents or any of them, their, or his or her,
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Alpha Keystone Engineering, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----
<C>                                                    <S>                           <C>
                /s/ FULTON J. KENNEDY                  President                     November 1, 1999
- -----------------------------------------------------
                  Fulton J. Kennedy

                 /s/ HAROLD C. KROPP                   Treasurer                     November 1, 1999
- -----------------------------------------------------
                   Harold C. Kropp

               /s/ MICHAEL R. AZARELA                  Executive Vice President,     November 1, 1999
- -----------------------------------------------------    Assistant Secretary and
                 Michael R. Azarela                      Director

                  /s/ JOHN KENNEDY                     Assistant Secretary and       November 1, 1999
- -----------------------------------------------------    Director
                    John Kennedy

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-9
<PAGE>   134

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          ARMCORE ACQUISITION CORP.

                                          By:       /s/ RALPH JACKSON
                                            ------------------------------------
                                                       Ralph Jackson
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Armcore Acquisition
Corp., and Michael R. Azarela, Executive Vice President and a Director of
Armcore Acquisition Corp., or either one of them, and any agent for service
named in this Registration Statement and each of them, his or her true and
lawful attorney-in-fact and agent, with full power of substitution and
resubstitution, for him or her and in his or her name, place and stead, in any
and all capacities, to sign any registration statement filed pursuant to Rule
462(b) under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Armcore Acquisition Corp. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                  /s/ RALPH JACKSON                    President and Director        November 1, 1999
- -----------------------------------------------------
                    Ralph Jackson

                 /s/ HAROLD C. KROPP                   Treasurer                     November 1, 1999
- -----------------------------------------------------
                   Harold C. Kropp

               /s/ MICHAEL R. AZARELA                  Executive Vice President and  November 1, 1999
- -----------------------------------------------------    Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-10
<PAGE>   135

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          ARMCORE RAILROAD CONTRACTORS, INC.

                                          By:       /s/ RALPH JACKSON
                                            ------------------------------------
                                                       Ralph Jackson
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Armcore Railroad
Contractors, Inc., and Michael R. Azarela, Executive Vice President and Director
of Armcore Railroad Contractors, Inc., or either one of them, and any agent for
service named in this Registration Statement and each of them, his or her true
and lawful attorney-in-fact and agent, with full power of substitution and
resubstitution, for him or her and in his or her name, place and stead, in any
and all capacities, to sign any registration statement filed pursuant to Rule
462(b) under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Armcore Railroad Contractors, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                  /s/ RALPH JACKSON                    President and Director        November 1, 1999
- -----------------------------------------------------
                    Ralph Jackson

                 /s/ HAROLD C. KROPP                   Treasurer                     November 1, 1999
- -----------------------------------------------------
                   Harold C. Kropp

               /s/ MICHAEL R. AZARELA                  Executive Vice President and  November 1, 1999
- -----------------------------------------------------    Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-11
<PAGE>   136

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          ANNEX RAILROAD BUILDERS, INC.

                                          By:      /s/ RONALD E. BROWN
                                            ------------------------------------
                                                      Ronald E. Brown
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Annex Railroad
Builders, Inc., and Michael R. Azarela, Executive Vice President, Assistant
Secretary and a Director of Annex Railroad Builders, Inc., or either one of
them, and any agent for service named in this Registration Statement and each of
them, his or her true and lawful attorney-in-fact and agent, with full power of
substitution and resubstitution, for him or her and in his or her name, place
and stead, in any and all capacities, to sign any registration statement filed
pursuant to Rule 462(b) under the Securities Act of 1933, as amended and any and
all amendments (including post-effective amendments) to this Registration
Statement, and to file the same, with all exhibits thereto, and other documents
in connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, full power and
authority to do and perform each and every act and thing requisite or necessary
to be done in and about the premises, as fully to all intents and purposes as he
or she might or could do in person, hereby ratifying and confirming all that
said attorney-in-fact and agents or any of them, their, or his or her,
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Annex Railroad Builders, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                     TITLE                     DATE
                      ---------                                     -----                     ----

<C>                                                      <S>                            <C>
                 /s/ RONALD E. BROWN                     President and Director         November 1, 1999
- -----------------------------------------------------
                   Ronald E. Brown

               /s/ PAMELA J. WHITAKER                    Treasurer                      November 1, 1999
- -----------------------------------------------------
                 Pamela J. Whitaker

               /s/ MICHAEL R. AZARELA                    Executive Vice President,      November 1, 1999
- -----------------------------------------------------      Assistant Secretary and
                 Michael R. Azarela                        Director

                 /s/ JOHN G. LARKIN                      Director                       November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-12
<PAGE>   137

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          COMSTOCK HOLDINGS, INC.

                                          By:     /s/ C. WILLIAM MOORE
                                            ------------------------------------
                                                      C. William Moore
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Comstock Holdings,
Inc., and Michael R. Azarela, Executive Vice President, Assistant Secretary and
a Director of Comstock Holdings, Inc., or either one of them, and any agent for
service named in this Registration Statement and each of them, his or her true
and lawful attorney-in-fact and agent, with full power of substitution and
resubstitution, for him and her and in his or her name, place and stead, in any
and all capacities, to sign any registration statement filed pursuant to Rule
462(b) under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Comstock Holdings, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                     TITLE                     DATE
                      ---------                                     -----                     ----

<C>                                                      <S>                            <C>
                /s/ C. WILLIAM MOORE                     President and Director         November 1, 1999
- -----------------------------------------------------
                  C. William Moore

               /s/ ROBERT HERSCHENFELD                   Treasurer                      November 1, 1999
- -----------------------------------------------------
                 Robert Herschenfeld

               /s/ MICHAEL R. AZARELA                    Director                       November 1, 1999
- -----------------------------------------------------
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                      Director                       November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-13
<PAGE>   138

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          L.K. COMSTOCK & COMPANY, INC.

                                          By:     /s/ C. WILLIAM MOORE
                                            ------------------------------------
                                                      C. William Moore
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints , John G. Larkin, a Director of L.K. Comstock &
Company, Inc., and Michael R. Azarela, a Director of L.K. Comstock & Company,
Inc., or either one of them, and any agent for service named in this
Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with L.K. Comstock & Company, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                /s/ C. WILLIAM MOORE                   President and Director        November 1, 1999
- -----------------------------------------------------
                  C. William Moore

               /s/ ROBERT HERSCHENFELD                 Treasurer                     November 1, 1999
- -----------------------------------------------------
                 Robert Herschenfeld

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin

               /s/ MICHAEL R. AZARELA                  Director                      November 1, 1999
- -----------------------------------------------------
                 Michael R. Azarela
</TABLE>

                                      II-14
<PAGE>   139

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          COMTRAK CONSTRUCTION, INC.

                                          By:       /s/ JOHN H. LAPP
                                            ------------------------------------
                                                        John H. Lapp
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Comtrak
Construction, Inc., and Michael R. Azarela, Executive Vice President, Assistant
Secretary and a Director of Comtrak Construction, Inc., or either one of them,
and any agent for service named in this Registration Statement and each of them,
his or her true and lawful attorney-in-fact and agent, with full power of
substitution and resubstitution, for him or her and in his or her name, place
and stead, in any and all capacities, to sign any registration statement filed
pursuant to Rule 462(b) under the Securities Act of 1933, as amended and any and
all amendments (including post-effective amendments) to this Registration
Statement, and to file the same, with all exhibits thereto, and other documents
in connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, full power and
authority to do and perform each and every act and thing requisite or necessary
to be done in and about the premises, as fully to all intents and purposes as he
or she might or could do in person, hereby ratifying and confirming all that
said attorney-in-fact and agents or any of them, their, or his or her,
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Comtrak Construction, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                  /s/ JOHN H. LAPP                     President and Director        November 1, 1999
- -----------------------------------------------------
                    John H. Lapp

                 /s/ HAROLD C. KROPP                   Treasurer                     November 1, 1999
- -----------------------------------------------------
                   Harold C. Kropp

               /s/ MICHAEL R. AZARELA                  Executive Vice President,     November 1, 1999
- -----------------------------------------------------    Assistant Secretary and
                 Michael R. Azarela                      Director

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-15
<PAGE>   140

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          CONDON BROTHERS, INC.

                                          By:      /s/ MARK E. CONDON
                                            ------------------------------------
                                                       Mark E. Condon
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Condon Brothers,
Inc., and Michael R. Azarela, Executive Vice President, Assistant Secretary and
a Director of Condon Brothers, Inc., or either one of them, and any agent for
service named in this Registration Statement and each of them, his or her true
and lawful attorney-in-fact and agent, with full power of substitution and
resubstitution, for him or her and in his or her name, place and stead, in any
and all capacities, to sign any registration statement filed pursuant to Rule
462(b) under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Condon Brothers, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                 /s/ MARK E. CONDON                    President and Director        November 1, 1999
- -----------------------------------------------------
                   Mark E. Condon

                  /s/ KENNETH REGER                    Treasurer                     November 1, 1999
- -----------------------------------------------------
                    Kenneth Reger

               /s/ MICHAEL R. AZARELA                  Executive Vice President,     November 1, 1999
- -----------------------------------------------------    Assistant Secretary and
                 Michael R. Azarela                      Director

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-16
<PAGE>   141

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          CPI CONCRETE PRODUCTS INCORPORATED

                                          By:       /s/ JOHN D. BAKER
                                            ------------------------------------
                                                       John D. Baker
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of CPI Concrete
Products Incorporated, and Michael R. Azarela, Executive Vice President,
Assistant Secretary and a Director of CPI Concrete Products Incorporated, or
either one of them, and any agent for service named in this Registration
Statement and each of them, his or her true and lawful attorney-in-fact and
agent, with full power of substitution and resubstitution, for him or her and in
his or her name, place and stead, in any and all capacities, to sign any
registration statement filed pursuant to Rule 462(b) under the Securities Act of
1933, as amended and any and all amendments (including post-effective
amendments) to this Registration Statement, and to file the same, with all
exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys-in-fact and
agents, and each of them, full power and authority to do and perform each and
every act and thing requisite or necessary to be done in and about the premises,
as fully to all intents and purposes as he or she might or could do in person,
hereby ratifying and confirming all that said attorney-in-fact and agents or any
of them, their, or his or her, substitute or substitutes, may lawfully do or
cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with CPI Concrete Products Incorporated and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                  TITLE                     DATE
                      ---------                                  -----                     ----

<C>                                                    <S>                           <C>
                  /s/ JOHN D. BAKER                    President and Director        November 1, 1999
- -----------------------------------------------------
                    John D. Baker

                  /s/ JULIE COLETTA                    Treasurer                     November 1, 1999
- -----------------------------------------------------
                    Julie Coletta

               /s/ MICHAEL R. AZARELA                  Executive Vice President,     November 1, 1999
- -----------------------------------------------------    Assistant Secretary and
                 Michael R. Azarela                      Director

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-17
<PAGE>   142

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          FCM RAIL, LTD.

                                          By:     /s/ DENNIS J. GILSTAD
                                            ------------------------------------
                                                     Dennis J. Gilstad
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of FCM Rail, Ltd., and
Michael R. Azarela, Executive Vice President and a Director of FCM Rail, Ltd.,
or either one of them, and any agent for service named in this Registration
Statement and each of them, his or her true and lawful attorney-in-fact and
agent, with full power of substitution and resubstitution, for him or her and in
his or her name, place and stead, in any and all capacities, to sign any
registration statement filed pursuant to Rule 462(b) under the Securities Act of
1933, as amended and any and all amendments (including post-effective
amendments) to this Registration Statement, and to file the same, with all
exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys-in-fact and
agents, and each of them, full power and authority to do and perform each and
every act and thing requisite or necessary to be done in and about the premises,
as fully to all intents and purposes as he or she might or could do in person,
hereby ratifying and confirming all that said attorney-in-fact and agents or any
of them, their, or his or her, substitute or substitutes, may lawfully do or
cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with FCM Rail, Ltd. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                /s/ DENNIS J. GILSTAD                  President and Director        November 1, 1999
- -----------------------------------------------------
                  Dennis J. Gilstad

                  /s/ HAROLD S. YIP                    Treasurer and Vice President  November 1, 1999
- -----------------------------------------------------
                    Harold S. Yip

               /s/ MICHAEL R. AZARELA                  Executive Vice President and  November 1, 1999
- -----------------------------------------------------    Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-18
<PAGE>   143

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          F&V METRO RW, INC.

                                          By:     /s/ BEN D'ALESSANDRO
                                            ------------------------------------
                                                      Ben D'Alessandro
                                               President and Chief Executive
                                                           Officer

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of F&V Metro RW, Inc.,
and Michael R. Azarela, Executive Vice President and a Director of F&V Metro RW,
Inc., or either one of them, and any agent for service named in this
Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with F&V Metro RW, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                /s/ BEN D'ALESSANDRO                   President, Chief Executive    November 1, 1999
- -----------------------------------------------------    Officer and Director
                  Ben D'Alessandro

                  /s/ GENE CELLINI                     Treasurer                     November 1, 1999
- -----------------------------------------------------
                    Gene Cellini

               /s/ MICHAEL R. AZARELA                  Executive Vice President and  November 1, 1999
- -----------------------------------------------------    Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-19
<PAGE>   144

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          RWKS TRANSIT, INC.

                                          By:     /s/ BEN D'ALESSANDRO
                                            ------------------------------------
                                                      Ben D'Alessandro
                                               President and Chief Executive
                                                           Officer

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of RWKS Transit, Inc.,
and Michael R. Azarela, Executive Vice President and a Director of RWKS Transit,
Inc., or either one of them, and any agent for service named in this
Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with RWKS Transit, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                /s/ BEN D'ALESSANDRO                   President, Chief Executive    November 1, 1999
- -----------------------------------------------------    Officer and Director
                  Ben D'Alessandro

                  /s/ GENE CELLINI                     Treasurer                     November 1, 1999
- -----------------------------------------------------
                    Gene Cellini

               /s/ MICHAEL R. AZARELA                  Executive Vice President and  November 1, 1999
- -----------------------------------------------------    Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-20
<PAGE>   145

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          IMPULSE ENTERPRISES OF NEW YORK, INC.

                                          By:     /s/ DAWN D'ALESSANDRO
                                            ------------------------------------
                                                     Dawn D'Alessandro
                                               President and Chief Executive
                                                           Officer

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Impulse Enterprises
of New York, Inc., and Michael R. Azarela, Executive Vice President and a
Director of Impulse Enterprises of New York, Inc., or either one of them, and
any agent for service named in this Registration Statement and each of them, his
or her true and lawful attorney-in-fact and agent, with full power of
substitution and resubstitution, for him or her and in his or her name, place
and stead, in any and all capacities, to sign any registration statement filed
pursuant to Rule 462(b) under the Securities Act of 1933, as amended and any and
all amendments (including post-effective amendments) to this Registration
Statement, and to file the same, with all exhibits thereto, and other documents
in connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, full power and
authority to do and perform each and every act and thing requisite or necessary
to be done in and about the premises, as fully to all intents and purposes as he
or she might or could do in person, hereby ratifying and confirming all that
said attorney-in-fact and agents or any of them, their, or his or her,
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Impulse Enterprises of New York, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                /s/ DAWN D'ALESSANDRO                  President and Chief           November 1, 1999
- -----------------------------------------------------    Executive Officer
                  Dawn D'Alessandro

                  /s/ GENE CELLINI                     Treasurer                     November 1, 1999
- -----------------------------------------------------
                    Gene Cellini

               /s/ MICHAEL R. AZARELA                  Executive Vice President and  November 1, 1999
- -----------------------------------------------------    Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin

                /s/ BEN D'ALESSANDRO                   Director                      November 1, 1999
- -----------------------------------------------------
                  Ben D'Alessandro
</TABLE>

                                      II-21
<PAGE>   146

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          V&R ELECTRICAL CONTRACTORS, INC.

                                          By:     /s/ BEN D'ALESSANDRO
                                            ------------------------------------
                                                      Ben D'Alessandro
                                               President and Chief Executive
                                                           Officer

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of V&R Electrical
Contractors, Inc., and Michael R. Azarela, Executive Vice President and a
Director of V&R Electrical Contractors, Inc., or either one of them, and any
agent for service named in this Registration Statement and each of them, his or
her true and lawful attorney-in-fact and agent, with full power of substitution
and resubstitution, for him or her and in his name, place and stead, in any and
all capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with V&R Electrical Contractors, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----
<C>                                                    <S>                           <C>

                /s/ BEN D'ALESSANDRO                   President, Chief Executive    November 1, 1999
- -----------------------------------------------------    Officer and Director
                  Ben D'Alessandro

                  /s/ GENE CELLINI                     Treasurer                     November 1, 1999
- -----------------------------------------------------
                    Gene Cellini

               /s/ MICHAEL R. AZARELA                  Executive Vice President and  November 1, 1999
- -----------------------------------------------------    Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-22
<PAGE>   147

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          GANTREX RW, INC.

                                          By:        /s/ PETER LEVEY
                                            ------------------------------------
                                                        Peter Levey
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Gantrex RW, Inc.,
and Michael R. Azarela, Executive Vice President and a Director of Gantrex RW,
Inc., or either one of them, and any agent for service named in this
Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Gantrex RW, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----
<C>                                                    <S>                           <C>
                   /s/ PETER LEVEY                     President and Director        November 1, 1999
- -----------------------------------------------------
                     Peter Levey

                  /s/ GENE CELLINI                     Treasurer                     November 1, 1999
- -----------------------------------------------------
                    Gene Cellini

               /s/ MICHAEL R. AZARELA                  Executive Vice President and  November 1, 1999
- -----------------------------------------------------    Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-23
<PAGE>   148

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          GANTREX CORPORATION

                                          By:        /s/ PETER LEVEY
                                            ------------------------------------
                                                        Peter Levey
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Gantrex
Corporation, and Michael R. Azarela, Secretary and a Director of Gantrex
Corporation, or either one of them, and any agent for service named in this
Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Gantrex Corporation and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----
<C>                                                    <S>                           <C>
                   /s/ PETER LEVEY                     President and Director        November 1, 1999
- -----------------------------------------------------
                     Peter Levey

                  /s/ GENE CELLINI                     Treasurer                     November 1, 1999
- -----------------------------------------------------
                    Gene Cellini

               /s/ MICHAEL R. AZARELA                  Executive Vice President and  November 1, 1999
- -----------------------------------------------------    Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-24
<PAGE>   149

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          GANTREX SYSTEMS, INC.

                                          By:        /s/ PETER LEVEY
                                            ------------------------------------
                                                        Peter Levey
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Gantrex Systems,
Inc., and Michael R. Azarela, Secretary and a Director of Gantrex Systems, Inc.,
or either one of them, and any agent for service named in this Registration
Statement and each of them, his or her true and lawful attorney-in-fact and
agent, with full power of substitution and resubstitution, for him or her and in
his or her name, place and stead, in any and all capacities, to sign any
registration statement filed pursuant to Rule 462(b) under the Securities Act of
1933, as amended and any and all amendments (including post-effective
amendments) to this Registration Statement, and to file the same, with all
exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys-in-fact and
agents, and each of them, full power and authority to do and perform each and
every act and thing requisite or necessary to be done in and about the premises,
as fully to all intents and purposes as he or she might or could do in person,
hereby ratifying and confirming all that said attorney-in-fact and agents or any
of them, their, or his or her, substitute or substitutes, may lawfully do or
cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Gantrex Systems, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----
<C>                                                    <S>                           <C>
                   /s/ PETER LEVEY                     President and Director        November 1, 1999
- -----------------------------------------------------
                     Peter Levey

                  /s/ GENE CELLINI                     Treasurer                     November 1, 1999
- -----------------------------------------------------
                    Gene Cellini

               /s/ MICHAEL R. AZARELA                  Executive Vice President and  November 1, 1999
- -----------------------------------------------------    Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-25
<PAGE>   150

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          H.P. McGINLEY INC.

                                          By:     /s/ DAVID H. MCGINLEY
                                            ------------------------------------
                                                     David H. McGinley
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of H.P. McGinley Inc.,
and Michael R. Azarela, Executive Vice President, Assistant Secretary and a
Director of H.P. McGinley Inc., or either one of them, and any agent for service
named in this Registration Statement and each of them, his or her true and
lawful attorney-in-fact and agent, with full power of substitution and
resubstitution, for him or her and in his or her name, place and stead, in any
and all capacities, to sign any registration statement filed pursuant to Rule
462(b) under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with H.P. McGinley Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----
<C>                                                    <S>                           <C>
                /s/ DAVID H. MCGINLEY                  President and Director        November 1, 1999
- -----------------------------------------------------
                  David H. McGinley

                   /s/ LYNN MINGLE                     Treasurer                     November 1, 1999
- -----------------------------------------------------
                     Lynn Mingle

               /s/ MICHAEL R. AZARELA                  Executive Vice President,     November 1, 1999
- -----------------------------------------------------    Assistant Secretary and
                 Michael R. Azarela                      Director

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-26
<PAGE>   151

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          KENNEDY RAILROAD BUILDERS, INC.

                                          By:       /s/ JOHN KENNEDY
                                            ------------------------------------
                                                        John Kennedy
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Kennedy Railroad
Builders, Inc., and Michael R. Azarela, Executive Vice President, Assistant
Secretary and a Director of Kennedy Railroad Builders, Inc., or either one of
them, and any agent for service named in this Registration Statement and each of
them, his or her true and lawful attorney-in-fact and agent, with full power of
substitution and resubstitution, for him or her and in his or her name, place
and stead, in any and all capacities, to sign any registration statement filed
pursuant to Rule 462(b) under the Securities Act of 1933, as amended and any and
all amendments (including post-effective amendments) to this Registration
Statement, and to file the same, with all exhibits thereto, and other documents
in connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, full power and
authority to do and perform each and every act and thing requisite or necessary
to be done in and about the premises, as fully to all intents and purposes as he
or she might or could do in person, hereby ratifying and confirming all that
said attorney-in-fact and agents or any of them, their, or his or her,
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Kennedy Railroad Builders, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                  TITLE                   DATE
                      ---------                                  -----                   ----
<C>                                                    <S>                         <C>
                  /s/ JOHN KENNEDY                     President and Director      November 1, 1999
- -----------------------------------------------------
                    John Kennedy

                 /s/ HAROLD C. KROPP                   Treasurer                   November 1, 1999
- -----------------------------------------------------
                   Harold C. Kropp

               /s/ MICHAEL R. AZARELA                  Executive Vice President,   November 1, 1999
- -----------------------------------------------------    Assistant Secretary and
                 Michael R. Azarela                      Director

                 /s/ JOHN G. LARKIN                    Director                    November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-27
<PAGE>   152

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          MERIT RAILROAD CONTRACTORS, INC.

                                          By:      /s/ STEVE C. GOGGIN
                                            ------------------------------------
                                                      Steve C. Goggin
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Merit Railroad
Contractors, Inc., and Michael R. Azarela, Executive Vice President, Assistant
Secretary and a Director of Merit Railroad Contractors, Inc., or either one of
them, and any agent for service named in this Registration Statement and each of
them, his or her true and lawful attorney-in-fact and agent, with full power of
substitution and resubstitution, for him or her and in his or her name, place
and stead, in any and all capacities, to sign any registration statement filed
pursuant to Rule 462(b) under the Securities Act of 1933, as amended and any and
all amendments (including post-effective amendments) to this Registration
Statement, and to file the same, with all exhibits thereto, and other documents
in connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, full power and
authority to do and perform each and every act and thing requisite or necessary
to be done in and about the premises, as fully to all intents and purposes as he
or she might or could do in person, hereby ratifying and confirming all that
said attorney-in-fact and agents or any of them, their, or his or her,
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Merit Railroad Contractors, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                  TITLE                   DATE
                      ---------                                  -----                   ----
<C>                                                    <S>                         <C>
                 /s/ STEVE C. GOGGIN                   President and Director      November 1, 1999
- -----------------------------------------------------
                   Steve C. Goggin

                   /s/ DAVID LEEHY                     Treasurer                   November 1, 1999
- -----------------------------------------------------
                     David Leehy

               /s/ MICHAEL R. AZARELA                  Executive Vice President,   November 1, 1999
- -----------------------------------------------------    Assistant Secretary and
                 Michael R. Azarela                      Director

                 /s/ JOHN G. LARKIN                    Director                    November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-28
<PAGE>   153

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          MIDWEST CONSTRUCTION SERVICES, INC.

                                          By:    /s/ WILLIAM C. LUCAITIS
                                            ------------------------------------
                                                    William C. Lucaitis
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Midwest
Construction Services, Inc., and Michael R. Azarela, Executive Vice President,
Assistant Secretary and a Director of Midwest Construction Services, Inc., or
either one of them, and any agent for service named in this Registration
Statement and each of them, his or her true and lawful attorney-in-fact and
agent, with full power of substitution and resubstitution, for him or her and in
his or her name, place and stead, in any and all capacities, to sign any
registration statement filed pursuant to Rule 462(b) under the Securities Act of
1933, as amended and any and all amendments (including post-effective
amendments) to this Registration Statement, and to file the same, with all
exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys-in-fact and
agents, and each of them, full power and authority to do and perform each and
every act and thing requisite or necessary to be done in and about the premises,
as fully to all intents and purposes as he or she might or could do in person,
hereby ratifying and confirming all that said attorney-in-fact and agents or any
of them, their, or his or her, substitute or substitutes, may lawfully do or
cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Midwest Construction Services, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                 TITLE                    DATE
                      ---------                                 -----                    ----

<C>                                                    <S>                         <C>
               /s/ WILLIAM C. LUCAITIS                 President and Director      November 1, 1999
- -----------------------------------------------------
                 William C. Lucaitis

                 /s/ HAROLD C. KROPP                   Treasurer                   November 1, 1999
- -----------------------------------------------------
                   Harold C. Kropp

               /s/ MICHAEL R. AZARELA                  Executive Vice              November 1, 1999
- -----------------------------------------------------    President, Assistant
                 Michael R. Azarela                      Secretary and Director

                 /s/ JOHN G. LARKIN                    Director                    November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-29
<PAGE>   154

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          MID WEST RW, INC.

                                          By:      /s/ ROBERT D. WOLFF
                                            ------------------------------------
                                                      Robert D. Wolff
                                                  Chief Executive Officer

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints Michael R. Azarela, Executive Vice President and
a Director of Mid West RW, Inc., and John G. Larkin, a Director of Mid West RW,
Inc., or either one of them, and any agent for service named in this
Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Mid West RW, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                 TITLE                    DATE
                      ---------                                 -----                    ----

<C>                                                    <S>                         <C>
                 /s/ ROBERT D. WOLFF                   Chief Executive Officer     November 1, 1999
- -----------------------------------------------------    and Director
                   Robert D. Wolff

                  /s/ WILLIAM BUSH                     President                   November 1, 1999
- -----------------------------------------------------
                    William Bush

                 /s/ MARY ANNE HAASE                   Treasurer                   November 1, 1999
- -----------------------------------------------------
                   Mary Anne Haase

               /s/ MICHAEL R. AZARELA                  Executive Vice President    November 1, 1999
- -----------------------------------------------------    and Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                    November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-30
<PAGE>   155

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          MID WEST RAILROAD CONSTRUCTION &
                                          MAINTENANCE CORPORATION OF WYOMING

                                          By:      /s/ ROBERT D. WOLFF
                                            ------------------------------------
                                                      Robert D. Wolff
                                                  Chief Executive Officer

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Mid West Railroad
Construction & Maintenance Corporation of Wyoming, and Michael R. Azarela,
Executive Vice President and a Director of Mid West Railroad Construction &
Maintenance Corporation of Wyoming, or either one of them, and any agent for
service named in this Registration Statement and each of them, his or her true
and lawful attorney-in-fact and agent, with full power of substitution and
resubstitution, for him or her and in his or her name, place and stead, in any
and all capacities, to sign any registration statement filed pursuant to Rule
462(b) under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Mid West Railroad Construction & Maintenance Corporation of
Wyoming and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                  TITLE                   DATE
                      ---------                                  -----                   ----

<C>                                                    <S>                         <C>
                 /s/ ROBERT D. WOLFF                   Chief Executive Officer     November 1, 1999
- -----------------------------------------------------    and Director
                   Robert D. Wolff

                  /s/ WILLIAM BUSH                     President                   November 1, 1999
- -----------------------------------------------------
                    William Bush

                 /s/ MARY ANNE HAASE                   Treasurer and Secretary     November 1, 1999
- -----------------------------------------------------
                   Mary Anne Haase

               /s/ MICHAEL R. AZARELA                  Executive Vice President    November 1, 1999
- -----------------------------------------------------    and Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                    November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-31
<PAGE>   156

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          MINNESOTA RAILROAD SERVICE, INC.

                                          By:      /s/ SCOTT D. BRACE
                                            ------------------------------------
                                                       Scott D. Brace
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Minnesota Railroad
Service, Inc., and Michael R. Azarela, Executive Vice President, Assistant
Secretary and a Director, of Minnesota Railroad Service, Inc., or either one of
them, and any agent for service named in this Registration Statement and each of
them, his or her true and lawful attorney-in-fact and agent, with full power of
substitution and resubstitution, for him or her and in his or her name, place
and stead, in any and all capacities, to sign any registration statement filed
pursuant to Rule 462(b) under the Securities Act of 1933, as amended and any and
all amendments (including post-effective amendments) to this Registration
Statement, and to file the same, with all exhibits thereto, and other documents
in connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, full power and
authority to do and perform each and every act and thing requisite or necessary
to be done in and about the premises, as fully to all intents and purposes as he
or she might or could do in person, hereby ratifying and confirming all that
said attorney-in-fact and agents or any of them, their, or his or her,
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Minnesota Railroad Service, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                  TITLE                   DATE
                      ---------                                  -----                   ----

<C>                                                    <S>                         <C>
                 /s/ SCOTT D. BRACE                    President and Director      November 1, 1999
- -----------------------------------------------------
                   Scott D. Brace

                  /s/ KENNETH REGER                    Treasurer                   November 1, 1999
- -----------------------------------------------------
                    Kenneth Reger

               /s/ MICHAEL R. AZARELA                  Executive Vice President,   November 1, 1999
- -----------------------------------------------------    Assistant Secretary and
                 Michael R. Azarela                      Director

                 /s/ JOHN G. LARKIN                    Director                    November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-32
<PAGE>   157

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          NEW ENGLAND RAILROAD
                                          CONSTRUCTION CO., INC.

                                          By:  /s/ ANTHONY D. JULIAN, JR.
                                            ------------------------------------
                                                   Anthony D. Julian, Jr.
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of New England
Railroad Construction Co., Inc., and Michael R. Azarela, Executive Vice
President, Assistant Secretary and a Director of New England Railroad
Construction Co., Inc., or either one of them, and any agent for service named
in this Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with New England Railroad Construction Co., Inc. and on the date
indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                  TITLE                   DATE
                      ---------                                  -----                   ----

<C>                                                    <S>                         <C>
             /s/ ANTHONY D. JULIAN, JR.                President and Director      November 1, 1999
- -----------------------------------------------------
               Anthony D. Julian, Jr.

                /s/ DANIEL F. JULIAN                   Treasurer                   November 1, 1999
- -----------------------------------------------------
                  Daniel F. Julian

               /s/ MICHAEL R. AZARELA                  Executive Vice President,   November 1, 1999
- -----------------------------------------------------    Assistant Secretary and
                 Michael R. Azarela                      Director

                 /s/ JOHN G. LARKIN                    Director                    November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-33
<PAGE>   158

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          NORTHERN RAIL SERVICE AND SUPPLY
                                          COMPANY, INC.

                                          By:   /s/ LAMBERTUS L. TAMELING
                                            ------------------------------------
                                                   Lambertus L. Tameling
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Northern Rail
Service and Supply Company, Inc., and Michael R. Azarela, Executive Vice
President, Assistant Secretary and a Director of Northern Rail Service and
Supply Company, Inc., or either one of them, and any agent for service named in
this Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Northern Rail Service and Supply Company, Inc. and on the date
indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                  TITLE                   DATE
                      ---------                                  -----                   ----

<C>                                                    <S>                         <C>
              /s/ LAMBERTUS L. TAMELING                President and Director      November 1, 1999
- -----------------------------------------------------
                Lambertus L. Tameling

                 /s/ HAROLD C. KROPP                   Treasurer                   November 1, 1999
- -----------------------------------------------------
                   Harold C. Kropp

               /s/ MICHAEL R. AZARELA                  Executive Vice President,   November 1, 1999
- -----------------------------------------------------    Assistant Secretary and
                 Michael R. Azarela                      Director

                 /s/ JOHN G. LARKIN                    Director                    November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-34
<PAGE>   159

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          RAILCORP, INC.

                                          By:     /s/ FULTON J. KENNEDY
                                            ------------------------------------
                                                     Fulton J. Kennedy
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Railcorp, Inc., and
Michael R. Azarela, Executive Vice President, Assistant Secretary and a Director
of Railcorp, Inc., or either one of them, and any agent for service named in
this Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Railcorp, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                    TITLE                     DATE
                      ---------                                    -----                     ----

<C>                                                      <S>                           <C>
                /s/ FULTON J. KENNEDY                    President                     November 1, 1999
- -----------------------------------------------------
                  Fulton J. Kennedy

                 /s/ HAROLD C. KROPP                     Treasurer Executive Vice      November 1, 1999
- -----------------------------------------------------      President,
                   Harold C. Kropp

               /s/ MICHAEL R. AZARELA                    Assistant Secretary and       November 1, 1999
- -----------------------------------------------------      Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                      Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin

                  /s/ JOHN KENNEDY                       Director                      November 1, 1999
- -----------------------------------------------------
                    John Kennedy
</TABLE>

                                      II-35
<PAGE>   160

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          RAILROAD SERVICE, INC.

                                          By:      /s/ SCOTT D. BRACE
                                            ------------------------------------
                                                       Scott D. Brace
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Railroad Service,
Inc., and Michael R. Azarela, Executive Vice President, Assistant Secretary and
a Director Railroad Service, Inc., or either one of them, and any agent for
service named in this Registration Statement and each of them, his or her true
and lawful attorney-in-fact and agent, with full power of substitution and
resubstitution, for him or her and in his or her name, place and stead, in any
and all capacities, to sign any registration statement filed pursuant to Rule
462(b) under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Railroad Service, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                     TITLE                     DATE
                      ---------                                     -----                     ----

<C>                                                      <S>                            <C>
                 /s/ SCOTT D. BRACE                      President and Director         November 1, 1999
- -----------------------------------------------------
                   Scott D. Brace

                  /s/ KENNETH REGER                      Treasurer                      November 1, 1999
- -----------------------------------------------------
                    Kenneth Reger

               /s/ MICHAEL R. AZARELA                    Executive Vice President,      November 1, 1999
- -----------------------------------------------------      Assistant Secretary and
                 Michael R. Azarela                        Director

                 /s/ JOHN G. LARKIN                      Director                       November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-36
<PAGE>   161

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          RAILROAD SPECIALTIES, INC.

                                          By:      /s/ RONALD E. BROWN
                                            ------------------------------------
                                                      Ronald E. Brown
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Railroad
Specialties, Inc., and Michael R. Azarela, Executive Vice President, Assistant
Secretary and a Director of Railroad Specialties, Inc., or either one of them,
and any agent for service named in this Registration Statement and each of them,
his or her true and lawful attorney-in-fact and agent, with full power of
substitution and resubstitution, for him or her and in his or her name, place
and stead, in any and all capacities, to sign any registration statement filed
pursuant to Rule 462(b) under the Securities Act of 1933, as amended and any and
all amendments (including post-effective amendments) to this Registration
Statement, and to file the same, with all exhibits thereto, and other documents
in connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, full power and
authority to do and perform each and every act and thing requisite or necessary
to be done in and about the premises, as fully to all intents and purposes as he
or she might or could do in person, hereby ratifying and confirming all that
said attorney-in-fact and agents or any of them, their, or his or her,
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Railroad Specialties, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                  TITLE                   DATE
                      ---------                                  -----                   ----

<C>                                                    <S>                         <C>
                 /s/ RONALD E. BROWN                   President and Director      November 1, 1999
- -----------------------------------------------------
                   Ronald E. Brown

                 /s/ PAMELA WHITAKER                   Treasurer                   November 1, 1999
- -----------------------------------------------------
                   Pamela Whitaker

               /s/ MICHAEL R. AZARELA                  Executive Vice President,   November 1, 1999
- -----------------------------------------------------    Assistant Secretary and
                 Michael R. Azarela                      Director

                 /s/ JOHN G. LARKIN                    Director                    November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-37
<PAGE>   162

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          SHELDON ELECTRIC, INC.

                                          By:       /s/ MICHAEL PRATT
                                            ------------------------------------
                                                       Michael Pratt
                                               President and Chief Operating
                                                           Officer

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Sheldon Electric,
Inc., and Michael R. Azarela, Executive Vice President and a Director of Sheldon
Electric, Inc., or either one of them, and any agent for service named in this
Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Sheldon Electric, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                    TITLE                     DATE
                      ---------                                    -----                     ----
<C>                                                      <S>                           <C>
                 /s/ MICHAEL A. CAHN                     Chief Executive Officer       November 1, 1999
- -----------------------------------------------------
                   Michael A. Cahn

                  /s/ MICHAEL PRATT                      President and Chief           November 1, 1999
- -----------------------------------------------------      Operating Officer
                    Michael Pratt

                 /s/ HAROLD C. KROPP                     Treasurer                     November 1, 1999
- -----------------------------------------------------
                   Harold C. Kropp

               /s/ MICHAEL R. AZARELA                    Executive Vice President      November 1, 1999
- -----------------------------------------------------      and Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                      Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin

                /s/ BEN D'ALESSANDRO                     Director                      November 1, 1999
- -----------------------------------------------------
                  Ben D'Alessandro
</TABLE>

                                      II-38
<PAGE>   163

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          SOUTHERN INDIANA WOOD PRESERVING CO.,
                                          INC.

                                          By:       /s/ SEAN G. GOUGH
                                            ------------------------------------
                                                       Sean G. Gough
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Southern Indiana
Wood Preserving Co., Inc., and Michael R. Azarela, Executive Vice President,
Assistant Secretary and a Director of Southern Indiana Wood Preserving Co.,
Inc., or either one of them, and any agent for service named in this
Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with, Southern Indiana Wood Preserving Co., Inc. and on the date
indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                    TITLE                     DATE
                      ---------                                    -----                     ----
<C>                                                      <S>                           <C>
                  /s/ SEAN G. GOUGH                      President and Director        November 1, 1999
- -----------------------------------------------------
                    Sean G. Gough

                 /s/ HAROLD C. KROPP                     Treasurer Executive Vice      November 1, 1999
- -----------------------------------------------------      President,
                   Harold C. Kropp

               /s/ MICHAEL R. AZARELA                    Assistant Secretary and       November 1, 1999
- -----------------------------------------------------      Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                      Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-39
<PAGE>   164

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          U.S. TRACKWORKS, INC.

                                          By:   /s/ LAMBERTUS L. TAMELING
                                            ------------------------------------
                                                   Lambertus L. Tameling
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of U.S. Trackworks,
Inc., and Michael R. Azarela, Executive Vice President, Assistant Secretary and
a Director of U.S. Trackworks, Inc., or either one of them, and any agent for
service named in this Registration Statement and each of them, his or her true
and lawful attorney-in-fact and agent, with full power of substitution and
resubstitution, for him or her and in his or her name, place and stead, in any
and all capacities, to sign any registration statement filed pursuant to Rule
462(b) under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with U.S. Trackworks, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
              /s/ LAMBERTUS L. TAMELING                President and Director        November 1, 1999
- -----------------------------------------------------
                Lambertus L. Tameling

                 /s/ HAROLD C. KROPP                   Treasurer                     November 1, 1999
- -----------------------------------------------------
                   Harold C. Kropp

               /s/ MICHAEL R. AZARELA                  Executive Vice President,     November 1, 1999
- -----------------------------------------------------    Assistant Secretary and
                 Michael R. Azarela                      Director

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-40
<PAGE>   165

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          U.S. RAILWAY SUPPLY, INC.

                                          By:      /s/ RONALD E. BROWN
                                            ------------------------------------
                                                      Ronald E. Brown
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of U.S. Railway
Supply, Inc., and Michael R. Azarela, Executive Vice President, Assistant
Secretary and a Director of U.S. Railway Supply, Inc., or either one of them,
and any agent for service named in this Registration Statement and each of them,
his or her true and lawful attorney-in-fact and agent, with full power of
substitution and resubstitution, for him or her and in his or her name, place
and stead, in any and all capacities, to sign any registration statement filed
pursuant to Rule 462(b) under the Securities Act of 1933, as amended and any and
all amendments (including post-effective amendments) to this Registration
Statement, and to file the same, with all exhibits thereto, and other documents
in connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, full power and
authority to do and perform each and every act and thing requisite or necessary
to be done in and about the premises, as fully to all intents and purposes as he
or she might or could do in person, hereby ratifying and confirming all that
said attorney-in-fact and agents or any of them, their, or his or her,
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with U.S. Railway Supply, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                 /s/ RONALD E. BROWN                   President and Director        November 1, 1999
- -----------------------------------------------------
                   Ronald E. Brown

               /s/ PAMELA J. WHITAKER                  Treasurer                     November 1, 1999
- -----------------------------------------------------
                 Pamela J. Whitaker

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin

               /s/ MICHAEL R. AZARELA                  Executive Vice President,     November 1, 1999
- -----------------------------------------------------    Assistant Secretary and
                 Michael R. Azarela                      Director
</TABLE>

                                      II-41
<PAGE>   166

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          WM. A. SMITH CONSTRUCTION CO., INC.

                                          By:       /s/ JACK I. WILT
                                            ------------------------------------
                                                        Jack I. Wilt
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Wm. A. Smith
Construction Co., Inc., and Michael R. Azarela, Executive Vice President,
Assistant Secretary and a Director of Wm. A. Smith Construction Co., Inc., or
either one of them, and any agent for service named in this Registration
Statement and each of them, his or her true and lawful attorney-in-fact and
agent, with full power of substitution and resubstitution, for him or her and in
his or her name, place and stead, in any and all capacities, to sign any
registration statement filed pursuant to Rule 462(b) under the Securities Act of
1933, as amended and any and all amendments (including post-effective
amendments) to this Registration Statement, and to file the same, with all
exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys-in-fact and
agents, and each of them, full power and authority to do and perform each and
every act and thing requisite or necessary to be done in and about the premises,
as fully to all intents and purposes as he or she might or could do in person,
hereby ratifying and confirming all that said attorney-in-fact and agents or any
of them, their, or his or her, substitute or substitutes, may lawfully do or
cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Wm. A. Smith Construction Co., Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                  /s/ JACK I. WILT                     President and Director        November 1, 1999
- -----------------------------------------------------
                    Jack I. Wilt

                    /s/ DAN BURG                       Treasurer                     November 1, 1999
- -----------------------------------------------------
                      Dan Burg

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin

               /s/ MICHAEL R. AZARELA                  Executive Vice President,     November 1, 1999
- -----------------------------------------------------    Assistant Secretary and
                 Michael R. Azarela                      Director
</TABLE>

                                      II-42
<PAGE>   167

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          WM. A. SMITH RERAILING SERVICES, INC.

                                          By:       /s/ JACK I. WILT
                                            ------------------------------------
                                                        Jack I. Wilt
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Wm. A. Smith
Rerailing Services, Inc., and Michael R. Azarela, Executive Vice President,
Assistant Secretary and a Director of Wm. A. Smith Rerailing Services, Inc., or
either one of them, and any agent for service named in this Registration
Statement and each of them, his or her true and lawful attorney-in-fact and
agent, with full power of substitution and resubstitution, for him or her and in
his or her name, place and stead, in any and all capacities, to sign any
registration statement filed pursuant to Rule 462(b) under the Securities Act of
1933, as amended and any and all amendments (including post-effective
amendments) to this Registration Statement, and to file the same, with all
exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys-in-fact and
agents, and each of them, full power and authority to do and perform each and
every act and thing requisite or necessary to be done in and about the premises,
as fully to all intents and purposes as he or she might or could do in person,
hereby ratifying and confirming all that said attorney-in-fact and agents or any
of them, their, or his or her, substitute or substitutes, may lawfully do or
cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Wm A. Smith Rerailing Services, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                       SIGNATURE                                    TITLE                  DATE
                       ---------                                    -----                  ----

<C>                                                       <S>                        <C>
                    /s/ JACK I. WILT                      President and Director     November 1, 1999
- --------------------------------------------------------
                      Jack I. Wilt

                      /s/ DAN BURG                        Treasurer                  November 1, 1999
- --------------------------------------------------------
                        Dan Burg

                   /s/ JOHN G. LARKIN                     Director                   November 1, 1999
- --------------------------------------------------------
                     John G. Larkin

                 /s/ MICHAEL R. AZARELA                   Executive Vice President,  November 1, 1999
- --------------------------------------------------------    Assistant Secretary and
                   Michael R. Azarela                       Director
</TABLE>

                                      II-43
<PAGE>   168

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          M-TRACK ENTERPRISES, INC.

                                          By:       /s/ LUIGI IMPERIA
                                            ------------------------------------
                                                       Luigi Imperia
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of M-Track
Enterprises, Inc., and Michael R. Azarela, a Director of M-Track Enterprises,
Inc., or either one of them, and any agent for service named in this
Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with M-Track Enterprises, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                  /s/ LUIGI IMPERIA                    President and Director        November 1, 1999
- -----------------------------------------------------
                    Luigi Imperia

                  /s/ GENE CELLINI                     Treasurer                     November 1, 1999
- -----------------------------------------------------
                    Gene Cellini

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin

               /s/ MICHAEL R. AZARELA                  Director                      November 1, 1999
- -----------------------------------------------------
                 Michael R. Azarela
</TABLE>

                                      II-44
<PAGE>   169

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          RAILWORKS CANADA, INC.

                                          By:      /s/ JOHN G. LARKIN
                                            ------------------------------------
                                                       John G. Larkin
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, President and a Director of
RailWorks Canada, Inc., and Michael R. Azarela, Executive Vice President and a
Director of RailWorks Canada, Inc., or either one of them, and any agent for
service named in this Registration Statement and each of them, his or her true
and lawful attorney-in-fact and agent, with full power of substitution and
resubstitution, for him or her and in his or her name, place and stead, in any
and all capacities, to sign any registration statement filed pursuant to Rule
462(b) under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with RailWorks Canada, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                 /s/ JOHN G. LARKIN                    President and Director        November 1, 1999
- -----------------------------------------------------
                   John G. Larkin

                  /s/ GENE CELLINI                     Treasurer                     November 1, 1999
- -----------------------------------------------------
                    Gene Cellini

               /s/ MICHAEL R. AZARELA                  Executive Vice President and  November 1, 1999
- -----------------------------------------------------    Director
                 Michael R. Azarela
</TABLE>

                                      II-45
<PAGE>   170

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          PARSONS RAILWAY SHOPS, INC.

                                          By:   /s/ DOUGLAS W. HUTCHINSON
                                            ------------------------------------
                                                   Douglas W. Hutchinson
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Parsons Railway
Shops, Inc., and Michael R. Azarela, a Director of Parsons Railway Shops, Inc.,
or either one of them, and any agent for service named in this Registration
Statement and each of them, his or her true and lawful attorney-in-fact and
agent, with full power of substitution and resubstitution, for him or her and in
his or her name, place and stead, in any and all capacities, to sign any
registration statement filed pursuant to Rule 462(b) under the Securities Act of
1933, as amended and any and all amendments (including post-effective
amendments) to this Registration Statement, and to file the same, with all
exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys-in-fact and
agents, and each of them, full power and authority to do and perform each and
every act and thing requisite or necessary to be done in and about the premises,
as fully to all intents and purposes as he or she might or could do in person,
hereby ratifying and confirming all that said attorney-in-fact and agents or any
of them, their, or his or her, substitute or substitutes, may lawfully do or
cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Parsons Railway Shops, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
              /s/ DOUGLAS W. HUTCHINSON                President                     November 1, 1999
- -----------------------------------------------------
                Douglas W. Hutchinson

              /s/ STEVEN G. HUTCHINSON                 Treasurer                     November 1, 1999
- -----------------------------------------------------
                Steven G. Hutchinson

               /s/ MICHAEL R. AZARELA                  Director                      November 1, 1999
- -----------------------------------------------------
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-46
<PAGE>   171

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          NEOSHO CONSTRUCTION COMPANY, INC.

                                          By:   /s/ STEVEN G. HUTCHINSON
                                            ------------------------------------
                                                    Steven G. Hutchinson
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Neosho Construction
Company, Inc., and Michael R. Azarela, a Director of Neosho Construction
Company, Inc., or either one of them, and any agent for service named in this
Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Neosho Construction Company, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
              /s/ STEVEN G. HUTCHINSON                 President                     November 1, 1999
- -----------------------------------------------------
                Steven G. Hutchinson

              /s/ DOUGLAS W. HUTCHINSON                Treasurer                     November 1, 1999
- -----------------------------------------------------
                Douglas W. Hutchinson

               /s/ MICHAEL R. AZARELA                  Director                      November 1, 1999
- -----------------------------------------------------
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-47
<PAGE>   172

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          NEOSHO INCORPORATED

                                          By:   /s/ STEVEN G. HUTCHINSON
                                            ------------------------------------
                                                    Steven G. Hutchinson
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Neosho
Incorporated, and Michael R. Azarela, a Director of Neosho Incorporated, or
either one of them, and any agent for service named in this Registration
Statement and each of them, his or her true and lawful attorney-in-fact and
agent, with full power of substitution and resubstitution, for him or her and in
his or her name, place and stead, in any and all capacities, to sign any
registration statement filed pursuant to Rule 462(b) under the Securities Act of
1933, as amended and any and all amendments (including post-effective
amendments) to this Registration Statement, and to file the same, with all
exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys-in-fact and
agents, and each of them, full power and authority to do and perform each and
every act and thing requisite or necessary to be done in and about the premises,
as fully to all intents and purposes as he or she might or could do in person,
hereby ratifying and confirming all that said attorney-in-fact and agents or any
of them, their, or his or her, substitute or substitutes, may lawfully do or
cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Neosho Incorporated and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
              /s/ STEVEN G. HUTCHINSON                 President                     November 1, 1999
- -----------------------------------------------------
                Steven G. Hutchinson

              /s/ DOUGLAS W. HUTCHINSON                Treasurer                     November 1, 1999
- -----------------------------------------------------
                Douglas W. Hutchinson

               /s/ MICHAEL R. AZARELA                  Executive Vice President,     November 1, 1999
- -----------------------------------------------------    Assistant Secretary and
                 Michael R. Azarela                      Director

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-48
<PAGE>   173

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          NEOSHO INTERNATIONAL, INC.

                                          By:   /s/ STEVEN G. HUTCHINSON
                                            ------------------------------------
                                                    Steven G. Hutchinson
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Neosho
International, Inc., and Michael R. Azarela, a Director of Neosho International,
Inc., or either one of them, and any agent for service named in this
Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Neosho International, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
              /s/ STEVEN G. HUTCHINSON                 President                     November 1, 1999
- -----------------------------------------------------
                Steven G. Hutchinson

              /s/ DOUGLAS W. HUTCHINSON                Treasurer                     November 1, 1999
- -----------------------------------------------------
                Douglas W. Hutchinson

               /s/ MICHAEL R. AZARELA                  Director                      November 1, 1999
- -----------------------------------------------------
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-49
<PAGE>   174

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          NEOSHO ASIA, INC.

                                          By:   /s/ STEVEN G. HUTCHINSON
                                            ------------------------------------
                                                    Steven G. Hutchinson
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Neosho Asia, Inc.,
and Michael R. Azarela, a Director of Neosho Asia, Inc., or either one of them,
and any agent for service named in this Registration Statement and each of them,
his or her true and lawful attorney-in-fact and agent, with full power of
substitution and resubstitution, for him or her and in his or her name, place
and stead, in any and all capacities, to sign any registration statement filed
pursuant to Rule 462(b) under the Securities Act of 1933, as amended and any and
all amendments (including post-effective amendments) to this Registration
Statement, and to file the same, with all exhibits thereto, and other documents
in connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, full power and
authority to do and perform each and every act and thing requisite or necessary
to be done in and about the premises, as fully to all intents and purposes as he
or she might or could do in person, hereby ratifying and confirming all that
said attorney-in-fact and agents or any of them, their, or his or her,
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Neosho Asia, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                  TITLE                   DATE
                      ---------                                  -----                   ----

<C>                                                    <S>                         <C>
              /s/ STEVEN G. HUTCHINSON                 President                   November 1, 1999
- -----------------------------------------------------
                Steven G. Hutchinson

              /s/ DOUGLAS W. HUTCHINSON                Treasurer                   November 1, 1999
- -----------------------------------------------------
                Douglas W. Hutchinson

               /s/ MICHAEL R. AZARELA                  Director                    November 1, 1999
- -----------------------------------------------------
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                    November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-50
<PAGE>   175

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          NEOSHO CENTRAL AMERICA, INC.

                                          By:   /s/ STEVEN G. HUTCHINSON
                                            ------------------------------------
                                                    Steven G. Hutchinson
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Neosho Central
America, Inc., and Michael R. Azarela, a Director of Neosho Central America,
Inc., or either one of them, and any agent for service named in this
Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Neosho Central America, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                  TITLE                   DATE
                      ---------                                  -----                   ----

<C>                                                    <S>                         <C>
              /s/ STEVEN G. HUTCHINSON                 President                   November 1, 1999
- -----------------------------------------------------
                Steven G. Hutchinson

              /s/ DOUGLAS W. HUTCHINSON                Treasurer                   November 1, 1999
- -----------------------------------------------------
                Douglas W. Hutchinson

               /s/ MICHAEL R. AZARELA                  Director                    November 1, 1999
- -----------------------------------------------------
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                    November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-51
<PAGE>   176

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          NEOSHO CONTRACTORS, INC.

                                          By:   /s/ STEVEN G. HUTCHINSON
                                            ------------------------------------
                                                    Steven G. Hutchinson
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Neosho Contractors,
Inc., and Michael R. Azarela, a Director of Neosho Contractors, Inc., or either
one of them, and any agent for service named in this Registration Statement and
each of them, his or her true and lawful attorney-in-fact and agent, with full
power of substitution and resubstitution, for him or her and in his or her name,
place and stead, in any and all capacities, to sign any registration statement
filed pursuant to Rule 462(b) under the Securities Act of 1933, as amended and
any and all amendments (including post-effective amendments) to this
Registration Statement, and to file the same, with all exhibits thereto, and
other documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents, and each of them,
full power and authority to do and perform each and every act and thing
requisite or necessary to be done in and about the premises, as fully to all
intents and purposes as he or she might or could do in person, hereby ratifying
and confirming all that said attorney-in-fact and agents or any of them, their,
or his or her, substitute or substitutes, may lawfully do or cause to be done by
virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Neosho Contractors, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                  TITLE                   DATE
                      ---------                                  -----                   ----

<C>                                                    <S>                         <C>
              /s/ STEVEN W. HUTCHINSON                 President                   November 1, 1999
- -----------------------------------------------------
                Steven W. Hutchinson

              /s/ DOUGLAS W. HUTCHINSON                Treasurer                   November 1, 1999
- -----------------------------------------------------
                Douglas W. Hutchinson

               /s/ MICHAEL R. AZARELA                  Director                    November 1, 1999
- -----------------------------------------------------
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                    November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-52
<PAGE>   177

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          McCORD TREATED WOOD, INC.

                                          By:     /s/ WILLIAM R. DONLEY
                                            ------------------------------------
                                                     William R. Donley
                                                  Chief Executive Officer

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of McCord Treated
Wood, Inc., and Michael R. Azarela, Executive Vice President and a Director of
McCord Treated Wood, Inc., or either one of them, and any agent for service
named in this Registration Statement and each of them, his or her true and
lawful attorney-in-fact and agent, with full power of substitution and
resubstitution, for him or her and in his or her name, place and stead, in any
and all capacities, to sign any registration statement filed pursuant to Rule
462(b) under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with McCord Treated Wood, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                /s/ WILLIAM R. DONLEY                  Chief Executive Officer       November 1, 1999
- -----------------------------------------------------
                  William R. Donley

                  /s/ GENE CELLINI                     Treasurer                     November 1, 1999
- -----------------------------------------------------
                    Gene Cellini

               /s/ MICHAEL R. AZARELA                  Executive Vice President      November 1, 1999
- -----------------------------------------------------       and Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-53
<PAGE>   178

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                       EARL CAMPBELL CONSTRUCTION COMPANY, INC.

                                       By:       /s/ ROBERT D. WOLFF
                                         ---------------------------------------
                                                     Robert D. Wolff
                                                        President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Earl Campbell
Construction Company, Inc., and Michael R. Azarela, Executive Vice President and
a Director of Earl Campbell Construction Company, Inc., or either one of them,
and any agent for service named in this Registration Statement and each of them,
his or her true and lawful attorney-in-fact and agent, with full power of
substitution and resubstitution, for him or her and in his or her name, place
and stead, in any and all capacities, to sign any registration statement filed
pursuant to Rule 462(b) under the Securities Act of 1933, as amended and any and
all amendments (including post-effective amendments) to this Registration
Statement, and to file the same, with all exhibits thereto, and other documents
in connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, full power and
authority to do and perform each and every act and thing requisite or necessary
to be done in and about the premises, as fully to all intents and purposes as he
or she might or could do in person, hereby ratifying and confirming all that
said attorney-in-fact and agents or any of them, their, or his or her,
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Earl Campbell Construction Company, Inc. and on the date
indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                 /s/ ROBERT D. WOLFF                   President                     November 1, 1999
- -----------------------------------------------------
                   Robert D. Wolff

                  /s/ KENNETH REGER                    Treasurer                     November 1, 1999
- -----------------------------------------------------
                    Kenneth Reger

               /s/ MICHAEL R. AZARELA                  Executive Vice President and  November 1, 1999
- -----------------------------------------------------       Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-54
<PAGE>   179

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          BIRMINGHAM WOOD, INC.

                                          By:     /s/ WILLIAM R. DONLEY
                                            ------------------------------------
                                                     William R. Donley
                                                  Chief Executive Officer

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Birmingham Wood,
Inc., and Michael R. Azarela, Executive Vice President and a Director of
Birmingham Wood, Inc., or either one of them, and any agent for service named in
this Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Birmingham Wood, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                /s/ WILLIAM R. DONLEY                  Chief Executive Officer       November 1, 1999
- -----------------------------------------------------
                  William R. Donley

                  /s/ GENE CELLINI                     Treasurer                     November 1, 1999
- -----------------------------------------------------
                    Gene Cellini

               /s/ MICHAEL R. AZARELA                  Executive Vice President and  November 1, 1999
- -----------------------------------------------------    Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-55
<PAGE>   180

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          W.T. BYLER, INC.

                                          By:    /s/ WILLIAM TROY BYLER
                                            ------------------------------------
                                                     William Troy Byler
                                                  Chief Executive Officer

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Birmingham Wood,
Inc., and Michael R. Azarela, Executive Vice President and a Director of
Birmingham Wood, Inc., or either one of them, and any agent for service named in
this Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Birmingham Wood, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
               /s/ WILLIAM TROY BYLER                  Chief Executive Officer       November 1, 1999
- -----------------------------------------------------
                 William Troy Byler

                  /s/ GENE CELLINI                     Treasurer                     November 1, 1999
- -----------------------------------------------------
                    Gene Cellini

               /s/ MICHAEL R. AZARELA                  Executive Vice President and  November 1, 1999
- -----------------------------------------------------    Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-56
<PAGE>   181

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          WOOD WASTE ENERGY, INC.

                                          By:       /s/ GREG M. SMITH
                                            ------------------------------------
                                                       Greg M. Smith
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Birmingham Wood,
Inc., and Michael R. Azarela, Executive Vice President and a Director of
Birmingham Wood, Inc., or either one of them, and any agent for service named in
this Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Birmingham Wood, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                  /s/ GREG M. SMITH                    President                     November 1, 1999
- -----------------------------------------------------
                    Greg M. Smith

                  /s/ GENE CELLINI                     Treasurer                     November 1, 1999
- -----------------------------------------------------
                    Gene Cellini

               /s/ MICHAEL R. AZARELA                  Executive Vice President and  November 1, 1999
- -----------------------------------------------------    Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-57
<PAGE>   182

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Baltimore, State of
Maryland, on November 1, 1999.

                                          WOOD WASTE ENERGY, INC.

                                          By:       /s/ GREG M. SMITH
                                            ------------------------------------
                                                       Greg M. Smith
                                                         President

                               POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints John G. Larkin, a Director of Birmingham Wood,
Inc., and Michael R. Azarela, Executive Vice President and a Director of
Birmingham Wood, Inc., or either one of them, and any agent for service named in
this Registration Statement and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all
capacities, to sign any registration statement filed pursuant to Rule 462(b)
under the Securities Act of 1933, as amended and any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agents or any of them, their, or his or her, substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities with Birmingham Wood, Inc. and on the date indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                    DATE
                      ---------                                   -----                    ----

<C>                                                    <S>                           <C>
                  /s/ GREG M. SMITH                    President                     November 1, 1999
- -----------------------------------------------------
                    Greg M. Smith

                  /s/ GENE CELLINI                     Treasurer                     November 1, 1999
- -----------------------------------------------------
                    Gene Cellini

               /s/ MICHAEL R. AZARELA                  Executive Vice President and  November 1, 1999
- -----------------------------------------------------    Director
                 Michael R. Azarela

                 /s/ JOHN G. LARKIN                    Director                      November 1, 1999
- -----------------------------------------------------
                   John G. Larkin
</TABLE>

                                      II-58

<PAGE>   1
                                                                   EXHIBIT 23.2


                        CONSENT OF INDEPENDENT AUDITORS


     We consent to the reference to our firm under the caption "Experts" in the
Registration Statement (Form S-4) and related Prospectus for the registration of
$50 million 11 1/2% Senior Subordinated Notes of the Company and to the
incorporation by reference therein of (i) our report dated February 8, 1999,
with respect to the consolidated financial statements and schedule of RailWorks
Corporation included in its Annual Report (Form 10-K) for the year ended
December 31, 1999, (ii) our report dated March 12, 1999, with respect to the
balance sheet of Mid West Railroad Construction and Maintenance Corporation of
Wyoming in its Current Report (Form 8-K) dated March 17, 1999 and (iii) our
report dated March 15, 1999, with respect to combined financial statements of
F&V Metro Contracting Corp. and Affiliates included in its Current Report (Form
8-K) dated March 17, 1999, each filed with the Securities and Exchange
Commission.


                                       Arthur Andersen LLP


October 29, 1999
Stamford, Connecticut

<PAGE>   1
                                                                    EXHIBIT 23.3



                        CONSENT OF INDEPENDENT AUDITORS

     We consent to the reference to our firm under the caption "Experts" in the
Registration Statement (Form S-4) and related Prospectus for the registration of
$50 million 11 1/2% Senior Subordinated Notes of the Company and to the
incorporation by reference therein of our report dated March 15, 1999, with
respect to the combined financial statements of Gantrex Group Limited, Norapco
Limited, Gantrex Holding Corporation and Gantrex Systems Inc. included in its
Current Report (Form 8-K) dated March 17, 1999, filed with the Securities and
Exchange Commission.

                                       Arthur Andersen LLP

October 29, 1999
Mississauga, Canada

<PAGE>   1

                                                                    EXHIBIT 99.1

                             RAILWORKS CORPORATION

                             LETTER OF TRANSMITTAL

                             TO TENDER FOR EXCHANGE
                   11 1/2% SENIOR SUBORDINATED NOTES DUE 2009
                                      FOR
                   11 1/2% SENIOR SUBORDINATED NOTES DUE 2009
           THAT HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933

     THE EXCHANGE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M., NEW YORK
CITY TIME, ON                , 1999 UNLESS EXTENDED (THE "EXPIRATION DATE").

                PLEASE READ CAREFULLY THE ATTACHED INSTRUCTIONS

     If you desire to accept the Exchange Offer, this Letter of Transmittal
should be completed, signed, and submitted to the Exchange Agent:

<TABLE>
<S>                                            <C>
      By Overnight Carrier or by Hand:               By Registered or Certified Mail:
          First Union National Bank                      First Union National Bank
   First Union Customer Information Center        First Union Customer Information Center
    Corporate Trust Operations -- NC1153           Corporate Trust Operations -- NC1153
   1525 West W.T. Harris Boulevard -- 3C3         1525 West W.T. Harris Boulevard -- 3C3
          Charlotte, NC 28262-1153                          Charlotte, NC 28288
            Attention: Mike Klotz                          Attention: Mike Klotz
</TABLE>

                 By Facsimile (for Eligible Institutions only):
                                 (704) 590-7628

                             Confirm by telephone:
                                 (704) 590-7408

     DELIVERY OF THIS LETTER OF TRANSMITTAL TO AN ADDRESS OTHER THAN AS SET
FORTH ABOVE WILL NOT CONSTITUTE A VALID DELIVERY.

     FOR ANY QUESTIONS REGARDING THIS LETTER OF TRANSMITTAL OR FOR ANY
ADDITIONAL INFORMATION, YOU MAY CONTACT THE EXCHANGE AGENT BY TELEPHONE AT (704)
590-7408 (ATTN: MIKE KLOTZ), OR BY FACSIMILE AT (704) 590-7628.
<PAGE>   2

     The undersigned hereby acknowledges receipt of the Prospectus dated
            , 1999 (the "Prospectus") of Railworks Corporation, a Delaware
corporation (the "Company"), and this Letter of Transmittal (the "Letter of
Transmittal"), which together constitute the Company's offer (the "Exchange
Offer") to exchange its 11 1/2% Senior Subordinated Notes due 2009 (the "New
Notes") that have been registered under the Securities Act of 1933, as amended
(the "Securities Act"), for its outstanding 11 1/2% Senior Subordinated Notes
due 2009 (the "Old Notes"), of which $125,000,000 aggregate principal amount is
outstanding. Capitalized terms used but not defined herein have the meanings
ascribed to them in the Prospectus.

     For each Old Note accepted for exchange, the Holder of such Old Note will
receive a New Note having a principal amount equal to that of the surrendered
Old Note. The New Notes will bear interest from the most recent date to which
interest has been paid on the Old Notes or, if no interest has been paid on the
Old Notes, from April 7, 1999. Accordingly, registered holders of New Notes on
the relevant record date for the first interest payment date following the
consummation of the Exchange Offer will receive interest accruing from the most
recent date to which interest has been paid or, if no interest has been paid,
from April 7, 1999. Old Notes accepted for exchange will cease to accrue
interest from and after the date of consummation of the Exchange Offer. Holders
of Old Notes whose Old Notes are accepted for exchange will not receive any
payment in respect of interest on such Old Notes otherwise payable on any
interest payment date the record date for which occurs on or after consummation
of the Exchange Offer.

     This letter is to be completed by a holder of Old Notes either if
certificates are to be forwarded herewith or if a tender of certificates for Old
Notes, if available, is to be made by book-entry transfer to the account
maintained by the Exchange Agent at The Depository Trust Company ("DTC")
pursuant to the procedures set forth in "The Exchange Offer -- Book Entry
Transfer" section of the Prospectus. Holders of Old Notes whose certificates are
not immediately available, or who are unable to deliver their certificates or
confirmation of the book-entry tender of their Old Notes into the Exchange
Agent's account at DTC (a "Book-Entry Confirmation") and all other documents
required by this Letter to the Exchange Agent on or prior to the Expiration
Date, must tender their Old Notes according to the guaranteed delivery
procedures set forth in "The Exchange Offer -- Guaranteed Delivery Procedures"
section of the Prospectus. See Instruction 2. DELIVERY OF DOCUMENTS TO DTC DOES
NOT CONSTITUTE DELIVERY TO THE EXCHANGE AGENT.

     The undersigned hereby tenders the Old Notes described in Box 1 below
pursuant to the terms and conditions described in the Prospectus and this Letter
of Transmittal. The undersigned is the registered owner of all the tendered Old
Notes and the undersigned represents that it has received from each beneficial
owner of the tendered Old Notes (collectively, the "Beneficial Owners") a duly
completed and executed form of "Instruction to Registered Holder and/or
Book-Entry Transfer Facility Participant from Beneficial Owner" accompanying
this Letter of Transmittal, instructing the undersigned to take the action
described in this Letter of Transmittal.

     Subject to, and effective upon, the acceptance for exchange of the tendered
Old Notes, the undersigned hereby exchanges, assigns and transfers to, or upon
the order of, the Company, all right, title, and interest in, to, and under such
Old Notes.

     The undersigned hereby irrevocably constitutes and appoints the Exchange
Agent as the true and lawful agent and attorney-in-fact of the undersigned with
respect to the tendered Old Notes, with full power of substitution (such power
of attorney being deemed to be an irrevocable power coupled with an interest),
to (i) deliver the tendered Old Notes to the Company or cause ownership of the
tendered Old Notes to be transferred to, or upon the order of, the Company, on
the books of the registrar for the Old Notes and deliver all accompanying
evidences of transfer and authenticity to, or upon the order of, the Company
upon receipt by the Exchange Agent, as the undersigned's agent, of the New Notes
to which the undersigned is entitled upon acceptance by the Company of the
tendered Old Notes pursuant to the Exchange Offer, and (ii) receive all

                                        2
<PAGE>   3

benefits and otherwise exercise all rights of beneficial ownership of the
tendered Old Notes, all in accordance with the terms of the Exchange Offer.

     Unless otherwise indicated under "Special Issuance Instructions" below (Box
2), please issue the New Notes exchanged for tendered Old Notes in the name(s)
of the undersigned. Similarly, unless otherwise indicated under "Special
Delivery Instructions" below (Box 3), please send or cause to be sent the
certificates for the New Notes (and accompanying documents, as appropriate) to
the undersigned at the address shown below in Box 1.

     The undersigned understands that tenders of Old Notes pursuant to the
procedures described under the caption "The Exchange Offer" in the Prospectus
and in the instructions hereto will constitute a binding agreement between the
undersigned and the Company upon the terms and subject to the conditions of the
Exchange Offer, subject only to withdrawal of such tenders on the terms set
forth in the Prospectus under the caption "The Exchange Offer -- Withdrawal of
Tenders of Old Notes." All authority herein conferred or agreed to be conferred
shall survive the death, bankruptcy or incapacity of the undersigned and any
Beneficial Owner(s), and every obligation of the undersigned or any Beneficial
Owners hereunder shall be binding upon the heirs, personal representatives,
executors, administrators, successors, assigns, trustees in bankruptcy and other
legal representatives of the undersigned and such Beneficial Owner(s).

     The undersigned hereby represents and warrants that the undersigned has
full power and authority to tender, exchange, assign and transfer the Old Notes
being tendered and to acquire the New Notes issuable upon the exchange of such
tendered Old Notes, and that, when the same are accepted for exchange as
contemplated herein, the Company will acquire good and unencumbered title
thereto, free and clear of all liens, restrictions, charges, encumbrances and
adverse claims. The undersigned and each Beneficial Owner will, upon request,
execute and deliver any additional documents reasonably requested by the Company
or the Exchange Agent as necessary or desirable to complete and give effect to
the transactions contemplated hereby.

     By accepting the Exchange Offer, the undersigned hereby represents and
warrants that (i) the New Notes to be acquired by the undersigned and any
Beneficial Owner(s) pursuant to the Exchange Offer are being acquired by the
undersigned and any Beneficial Owner(s) in the ordinary course of business of
the undersigned and any Beneficial Owner(s), (ii) neither the undersigned nor
any Beneficial Owner is participating in, or intends to participate in, or has
an arrangement or understanding with any person to participate in the
distribution of the New Notes, (iii) except as otherwise disclosed in writing
herewith, neither the undersigned nor any Beneficial Owner is an "affiliate," as
defined in Rule 405 under the Securities Act, of the Company and, if the
undersigned or any Beneficial Owner is such an affiliate, that it will comply
with the registration and prospectus delivery requirements of the Securities Act
to the extent applicable, (iv) if neither the undersigned nor any Beneficial
Owner is a broker-dealer, that neither the undersigned nor any such Beneficial
Owner is engaged in or intends to engage in the distribution of any New Notes,
or (v) if any of the undersigned or any Beneficial Owner(s) is a broker-dealer
that will receive New Notes for its own account in exchange for tendered Old
Notes, that the Old Notes to be exchanged for the New Notes were acquired by it
as a result of market-making activities or other trading activities and
acknowledges that it will deliver a prospectus in connection with any resale of
such New Notes. The undersigned, by agreeing to so deliver any such prospectus,
shall not be deemed to admit that it is an "underwriter" within the meaning of
the Securities Act.

[ ]  CHECK HERE IF TENDERED OLD NOTES ARE BEING DELIVERED WITH THIS LETTER OF
     TRANSMITTAL.

[ ]  CHECK HERE IF TENDERED OLD NOTES ARE BEING DELIVERED PURSUANT TO A NOTICE
     OF GUARANTEED DELIVERY PREVIOUSLY DELIVERED TO THE EXCHANGE AGENT AND
     COMPLETE BOX 4 BELOW.
                                        3
<PAGE>   4

[ ]  CHECK HERE IF TENDERED NOTES ARE BEING DELIVERED BY BOOK-ENTRY TRANSFER
     MADE TO THE ACCOUNT MAINTAINED BY THE EXCHANGE AGENT WITH DTC AND COMPLETE
     BOX 5 BELOW.

[ ]  CHECK HERE IF YOU ARE A BROKER-DEALER AND WISH TO RECEIVE 10 ADDITIONAL
     COPIES OF THE PROSPECTUS AND 10 COPIES OF ANY AMENDMENTS OR SUPPLEMENTS TO
     THE PROSPECTUS.

     Name:

     Address:

            PLEASE READ THIS ENTIRE LETTER OF TRANSMITTAL CAREFULLY
                          BEFORE COMPLETING THE BOXES

<TABLE>
<S>                                                    <C>                       <C>                       <C>

- -----------------------------------------------------------------------------------------------------------------------------------
                                                               BOX 1
                                                 DESCRIPTION OF OLD NOTES TENDERED
                                           (ATTACH ADDITIONAL SIGNED PAGES, IF NECESSARY
- -----------------------------------------------------------------------------------------------------------------------------------
                                                                                        AGGREGATE
   NAME(S) AND ADDRESS(ES) OF REGISTERED HOLDER(S)           CERTIFICATE             PRINCIPAL AMOUNT             PRINCIPAL
 EXACTLY AS NAME(S) APPEAR(S) ON NOTE CERTIFICATE(S)         NUMBER(S) OF             REPRESENTED BY                AMOUNT
             (PLEASE FILL IN, IF BLANK)                       OLD NOTES*              CERTIFICATE(S)              TENDERED**
- -----------------------------------------------------------------------------------------------------------------------------------

                                                       -------------------------------------------------------------------------

                                                       -------------------------------------------------------------------------

                                                       -------------------------------------------------------------------------

                                                       -------------------------------------------------------------------------
                                                                TOTAL
- -----------------------------------------------------------------------------------------------------------------------------------
  * Need not be completed if Old Notes are being tendered by book-entry transfer.
 ** The minimum permitted tender is $1,000 in principal amount of Old Notes. All other tenders must be in integral multiples of
    $1,000 of principal amount. Unless otherwise indicated in this column, the aggregate principal amount of the Old Notes
    represented by the certificates identified in this Box 1 or delivered to the Exchange Agent herewith shall be deemed tendered.
    See Instruction 4.
- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

                                        4
<PAGE>   5

                                     BOX 2
                       SPECIAL REGISTRATION INSTRUCTIONS
                         (SEE INSTRUCTIONS 5, 6 AND 7)

  To be completed ONLY if certificates for Old Notes not exchanged and/or New
Notes are to be issued in the name of and sent to someone other than the
undersigned or if Old Notes delivered by book-entry transfer which are not
accepted for exchange are to be returned by credit to an account maintained at
DTC other than the account set forth in Box 5.

Issue New Note(s) and/or Old Note to:

Name(s)
- -------------------------------------------
                                      (PLEASE PRINT)

Address
- --------------------------------------------

             ------------------------------------------------------
                               (INCLUDE ZIP CODE)

             ------------------------------------------------------
                 (TAX IDENTIFICATION OR SOCIAL SECURITY NUMBER)

[ ] Credit unexchanged Old Notes delivered by book-entry transfer to the DTC
account set forth below:

                ------------------------------------------------
                              (DTC Account Number)

                                     BOX 3
                         SPECIAL DELIVERY INSTRUCTIONS
                         (SEE INSTRUCTIONS 5, 6 AND 7)

  To be completed ONLY if certificates for Old Notes not exchanged and/or New
Notes are to be sent to someone other than the undersigned, or to the
undersigned at an address other than that shown above:

Mail New Note(s) and any untendered Old Notes to:

Name(s)
- -------------------------------------------
                                  (PLEASE TYPE OR PRINT)

Address
- -------------------------------------------

             ------------------------------------------------------
                               (INCLUDE ZIP CODE)

             ------------------------------------------------------

                                     BOX 4
                           USE OF GUARANTEED DELIVERY
                              (SEE INSTRUCTION 2)

TO BE COMPLETED ONLY IF OLD NOTES ARE BEING TENDERED BY MEANS OF A NOTICE OF
GUARANTEED DELIVERY.

Name(s) of Registered Holder(s):
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

Date of Execution of Notice of Guaranteed Delivery:
- ----------------------------------------------------------------

Name of Institution which Guaranteed Delivery:
- ---------------------------------------------------------------------

                                     BOX 5
                           USE OF BOOK-ENTRY TRANSFER
                              (SEE INSTRUCTION 1)

TO BE COMPLETED ONLY IF DELIVERY OF OLD NOTES IS TO BE MADE BY BOOK-ENTRY
TRANSFER.

Name of Tendering Institution:
- --------------------------------------------------------------------------------
Account Number:
- --------------------------------------------------------------------------------
Transaction Code Number:
- --------------------------------------------------------------------------------

                                        5
<PAGE>   6

                                     BOX 6

                           TENDERING HOLDER SIGNATURE
                           (SEE INSTRUCTIONS 1 AND 5)
                   IN ADDITION, COMPLETE SUBSTITUTE FORM W-9

X
- --------------------------------------------------------------------------------

X
- --------------------------------------------------------------------------------
           SIGNATURE OF REGISTERED HOLDER(S) OR AUTHORIZED SIGNATORY)

Note: The above lines must be signed by the registered holder(s) of Old Notes as
their name(s) appear(s) on the Old Notes or by person(s) authorized to become
registered holder(s) (evidence of which authorization must be transmitted with
this Letter of Transmittal). If signature is by a trustee, executor,
administrator, guardian, attorney-in-fact, officer, or other person acting in a
fiduciary or representative capacity, such person must set forth his or her full
title below. See Instruction 5.

Name(s):
- --------------------------------------------------------------------------------

Capacity:
- --------------------------------------------------------------------------------

Street Address:
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
                               (INCLUDE ZIP CODE)

Area Code and Telephone Number:
- ----------------------------------------------------------------------

Tax Identification or Social Security Number:
- -----------------------------------------------------------

Signature Guarantee:
- --------------------------------------------------------------------------------
                         (IF REQUIRED BY INSTRUCTION 5)

Authorized Signature:
- --------------------------------------------------------------------------------

X
- --------------------------------------------------------------------------------

Name:
- --------------------------------------------------------------------------------
                             (PLEASE TYPE OR PRINT)

Title:
- --------------------------------------------------------------------------------

Name of Firm:
- --------------------------------------------------------------------------------
         (MUST BE AN ELIGIBLE INSTITUTION AS DEFINED IN INSTRUCTION 2)

Address:
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
                               (INCLUDE ZIP CODE)

Area Code and telephone Number:
- -----------------------------------------------------------------------

Dated:
- --------------------------------------------------------------------------------

                                        6
<PAGE>   7


                                 PAYOR'S NAME:

                             RAILWORKS CORPORATION

<TABLE>
<C>                              <S>                                                    <C>                <C>
                                   Name (if joint names, list first and circle the name of the person or entity whose
          SUBSTITUTE               number you enter in Part 1 below. See instructions if your name has changed.)
           FORM W-9
         DEPARTMENT OF             Address
         THE TREASURY
           INTERNAL                City, State and ZIP Code
            REVENUE
            SERVICE
                                   List account number(s) here (optional)
                                   PART 1 -- PLEASE PROVIDE YOUR TAXPAYER                         Social Security
                                   IDENTIFICATION NUMBER ("TIN") IN THE BOX AT RIGHT               Number or TIN
                                   AND CERTIFY BY SIGNING AND DATING BELOW:

                                   PART 2 -- Check the box if you are NOT subject to backup withholding under the
                                   provisions of section 3406(a)(1)(C) of the Internal Revenue Code because (i) you have
                                   not been notified that you are subject to backup withholding as a result of failure to
                                   report all interest or dividends of (ii) the Internal Revenue Service has notified you
                                   that you are no longer subject to backup withholding.                                  [
                                   ]
                                   CERTIFICATION -- UNDER THE PENALTIES OF PERJURY, I CERTIFY THAT THE     PART 3 --
                                   INFORMATION PROVIDED ON THIS FORM IS TRUE, CORRECT AND COMPLETE.        TIN applied
                                                                                                           for:         [ ]
                                   Signature  ________   Date  ________
</TABLE>

NOTE: FAILURE TO COMPLETE AND RETURN THIS FORM MAY RESULT IN BACKUP WITHHOLDING
      OF 31% OF ANY PAYMENTS MADE TO YOU PURSUANT TO THE EXCHANGE OFFER. PLEASE
      REVIEW THE ENCLOSED GUIDELINES FOR CERTIFICATION OF TAXPAYER
      IDENTIFICATION NUMBER ON SUBSTITUTE FORM W-9 FOR ADDITIONAL DETAILS

                                        7
<PAGE>   8

                     INSTRUCTIONS TO LETTER OF TRANSMITTAL

                    FORMING PART OF THE TERMS AND CONDITIONS
                             OF THE EXCHANGE OFFER

     1. DELIVERY OF THIS LETTER OF TRANSMITTAL AND OLD NOTES.  A properly
completed and duly executed copy of this Letter of Transmittal, including
Substitute Form W-9, and any other documents required by this Letter of
Transmittal must be received by the Exchange Agent at its address set forth
herein, and either certificates for tendered Old Notes must be received by the
Exchange Agent at its address set forth herein or such tendered Old Notes must
be transferred pursuant to the procedures for book-entry transfer described in
the Prospectus under the caption "The Exchange Offer -- Procedures for Tendering
Old Notes" (and a confirmation of such transfer received by the Exchange Agent),
in each case prior to 5:00 p.m., New York City time, on the Expiration Date. The
method of delivery of certificates for tendered Old Notes, this Letter of
Transmittal and all other required documents to the Exchange Agent is at the
election and risk of the tendering holder and the delivery will be deemed made
only when actually received by the Exchange Agent. If delivery is by mail,
registered mail with return receipt requested, properly insured, is recommended.
Instead of delivery by mail, it is recommended that the holder use an overnight
or hand delivery service. In all cases, sufficient time should be allowed to
assure timely delivery. No Letter of Transmittal or Old Notes should be sent to
the Company. Neither the Company nor the registrar is under any obligation to
notify any tendering holder of the Company's acceptance of tendered Old Notes
prior to the closing of the Exchange Offer.

     2. GUARANTEED DELIVERY PROCEDURES.  Holders who wish to tender their Old
Notes but whose Old Notes are not immediately available or who cannot deliver
their Old Notes, this Letter of Transmittal or any other documents required
hereby to the Exchange Agent prior to the Expiration Date must tender their Old
Notes according to the guaranteed delivery procedures set forth below, including
completion of Box 4. Pursuant to such procedures: (i) such tender must be made
through a member firm of a registered national securities exchange or of the
National Association of Securities Dealers, Inc., a commercial bank or trust
company having an office or correspondent in the United States or an "eligible
guarantor institution" as defined by Rule 17Ad-15 under the Exchange Act (in any
such case, an "Eligible Institution"), (ii) prior to the Expiration Date, the
Exchange Agent must have received from an Eligible Institution a properly
completed and duly executed Letter of Transmittal (or facsimile thereof) and
Notice of Guaranteed Delivery (by telegram, telex, facsimile, transmission, mail
or hand delivery) setting forth the name and address of the tendering holder,
the certificate number(s) of the tendered Old Notes and the principal amount of
the Old Notes tendered, and stating that the tender is being made thereby and
guaranteeing that, within three New York Stock Exchange trading days after the
date of execution of the Notice of Guaranteed Delivery, this Letter of
Transmittal together with the certificate(s) representing the tendered Old Notes
and any other required documents will be deposited by the Eligible Institution
with the Exchange Act; and (iii) the certificate(s) representing all tendered
Old Notes in proper form for transfer, or a confirmation of book-entry transfer
of such tendered Old Notes into the Exchange Agent's account at DTC, as the case
may be, and all other documents required by this Letter of Transmittal, must be
received by the Exchange Agent within three NASDAQ National Market trading days
after the date of execution of the Notice of Guaranteed Delivery. Any holder who
wishes to tender Old Notes pursuant to the guaranteed delivery procedures
described above must ensure that the Exchange Agent receives the Notice of
Guaranteed Delivery within the time period prescribed above. Failure to complete
the guaranteed delivery procedures outlined above will not, of itself, affect
the validity or effect a revocation of any Letter of Transmittal form properly
completed and executed by a holder who attempted to use the guaranteed delivery
process.

     3. BENEFICIAL OWNER INSTRUCTIONS TO REGISTERED HOLDERS.  Only a holder in
whose name tendered Old Notes are registered on the books of the registrar (or
the legal representative or

                                        8
<PAGE>   9

attorney-in-fact of such registered holder) may execute and deliver this Letter
of Transmittal. Any Beneficial Owner of tendered Old Notes who is not the
registered holder must arrange promptly with the registered holder to execute
and deliver this Letter of Transmittal on his or her behalf through the
execution and delivery to the registered holder of the Instructions of
Registered Holder and/or Book-Entry Transfer Facility Participant from
Beneficial Owner form accompanying this Letter of Transmittal.

     4. PARTIAL TENDERS.  Tenders of Old Notes will be accepted only in integral
multiples of $1,000 in principal amount. If less than the entire principal
amount of Old Notes held by the holder is tendered, the tendering holder should
fill in the principal amount tendered in the column labeled "Aggregate Principal
Amount Tendered" of Box 1 above. The entire principal amount of Old Notes
delivered to the Exchange Agent will be deemed to have been tendered unless
otherwise indicated. If the entire principal amount of all Old Notes held by the
holder is not tendered, then Old Notes for the principal amount of Old Notes not
tendered and New Notes issued in exchange for any Old Notes tendered and
accepted will be sent to the Holder at his or her registered address, unless a
different address is provided in the appropriate box on this Letter of
Transmittal, as soon as practicable following the Expiration Date.

     5. SIGNATURES ON THE LETTER OF TRANSMITTAL; BOND POWERS AND ENDORSEMENTS;
GUARANTEE OF SIGNATURES.  If this Letter of Transmittal is signed by the
registered holder(s) of the tendered Old Notes, the signature must correspond
with the name(s) as written on the face of the tendered Old Notes without any
change whatsoever.

     If any of the tendered Old Notes are owned of record by two or more joint
owners, all such owners must sign this Letter of Transmittal. If any Tendered
Notes are held in different names, it will be necessary to complete, sign and
submit as many separate copies of the Letter of Transmittal as there are
different names in which Tendered Notes are held.

     If this Letter of Transmittal is signed by the registered holder(s) of
tendered Old Notes, and New Notes issued in exchange therefor are to be issued
(and any untendered principal amount of Old Notes is to be reissued) in the name
of the registered holder(s), then such registered holder(s) need not and should
not endorse any tendered Old Notes, nor provide a separate bond power. In any
other case, such registered holder(s) must either properly endorse the tendered
Old Notes or transmit a properly completed separate bond power with this Letter
of Transmittal, with the signature(s) on the endorsement or bond power
guaranteed by an Eligible Institution.

     If this Letter of Transmittal is signed by a person other than the
registered holder(s) of any tendered Old Notes, such tendered Old Notes must be
endorsed or accompanied by appropriate bond powers, in each case signed exactly
as the name(s) of the registered holder(s) appear(s) on the tendered Old Notes,
with the signature(s) on the endorsement or bond power guaranteed by an Eligible
Institution.

     If this Letter of Transmittal or any tendered Old Notes or bond powers are
signed by trustees, executors, administrators, guardians, attorneys-in-fact,
officers of corporations or others acting in a fiduciary or representative
capacity, such persons should so indicate when signing and, unless waived by the
Company, evidence satisfactory to the Company of their authority to so act must
be submitted with this Letter of Transmittal.

     Endorsements on tendered Old Notes or signatures on bond powers required by
this Instruction 5 must be guaranteed by an Eligible Institution.

     Signatures on this Letter of Transmittal must be guaranteed by an Eligible
Institution unless the tendered Old Notes are tendered (i) by a registered
holder who has not completed Box 2 set forth herein (entitled "Special Issuance
Instructions"), (ii) by a registered holder who has not completed Box 3 set
forth herein (entitled "Special Delivery Instructions") or (iii) by an Eligible
Institution.

                                        9
<PAGE>   10

     6. SPECIAL ISSUANCE AND DELIVERY INSTRUCTIONS. Tendering holders should
indicate, in the appropriate box (Box 2 or 3), the name and address to which the
New Notes and/or substitute certificates evidencing Old Notes for principal
amounts not tendered or not accepted for exchange are to be sent, if different
from the name and address of the person signing this Letter of Transmittal. In
the case of issuance in a different name, the taxpayer identification or social
security number of the person name must also be indicated. Holders of Old Notes
tendering Old Notes by book-entry transfer may request that Old Notes not
exchanged be credited to such account maintained at DTC as such Holder may
designate hereon. If no such instructions are given, such Old Notes not
exchanged will be returned to the name or address of the person signing this
Letter of Transmittal.

     7. TRANSFER TAXES.  The Company will pay all transfer taxes, if any,
applicable to the exchange of tendered Old Notes pursuant to the Exchange Offer.
If, however, New Notes and/or substitute Old Notes not exchanged or to be
delivered to, or are to be registered or issued in the name of, any person other
than the registered holder of the Old Notes tendered hereby, or if tendered Old
Notes tendered hereby, or if tendered Old Notes are registered in the name of
any person other than the person signing this Letter of Transmittal, a transfer
tax is imposed for any reason other than the transfer and exchange of tendered
Old Notes pursuant to the Exchange Offer, then the amount of any such transfer
taxes (whether imposed on the registered holder or on any other person) will be
payable by the tendering holder. If satisfactory evidence of payment of such
taxes or exemption therefrom is not submitted with this Letter of Transmittal,
the amount of such transfer taxes will be billed directly to such tendering
holder.

     Except as provided in this Instruction 7, it will not be necessary for
transfer tax stamps to be affixed to the tendered Old Notes listed in this
Letter of Transmittal.

     8. TAX IDENTIFICATION NUMBER.  Federal income tax law requires that the
holder(s) of any tendered Old Notes which are accepted for exchange must provide
the Company (as payor) with its correct taxpayer identification number ("TIN")
which, in the case of a holder who is an individual, is his or her social
security number. If the Company is not provided with the correct TIN, the holder
may be subject to backup withholding and a $50 penalty imposed by the Internal
Revenue Service. (If withholding results in an over-payment of taxes, a refund
may be obtained.) Certain holders (including, among others, all corporations and
certain foreign individuals) are not subject to these backup withholding and
reporting requirements. See the enclosed "Guidelines for Certification of
Taxpayer Identification Number on Substitute Form W-9" for additional
instructions.

     To prevent backup withholding, each holder of tendered Old Notes must
provide such holder's correct TIN by completing the Substitute Form W-9 set
forth herein, certifying that the TIN provided is correct (or that such holder
is awaiting a TIN) and that (i) the holder has not been notified by the Internal
Revenue Service that such holder is subject to backup withholding as a result of
failure to report all interest or dividends or (ii) the Internal Revenue Service
has notified the holder that such holder is no longer subject to backup
withholding. If the tendered Old Notes are registered in more than one name or
are not in the name of the actual owner, consult the "Guidelines for
Certification of Taxpayer Identification Number on Substitute Form W-9" for
information on which TIN to report.

     The Company reserves the right in its sole discretion to take whatever
steps are necessary to comply with the Company's obligation regarding backup
withholding.

     9. VALIDITY OF TENDERS.  All questions as to the validity, form,
eligibility (including time of receipt), acceptance and withdrawal of tendered
Old Notes will be determined by the Company, which determination will be final
and binding. The Company reserves the absolute right to reject any and all
tenders of Old Notes not in proper form or the acceptance of which for exchange
may, in the opinion of the Company's counsel, be unlawful. The Company also
reserves the absolute right to waive any conditions of the Exchange Offer or any
defect or irregularity in the
                                       10
<PAGE>   11

tender of Old Notes. The interpretation of the terms and conditions of the
Exchange Offer (including this Letter of Transmittal and the instructions
hereto) by the Company shall be final and binding on all parties. Unless waived,
any defects or irregularities in connection with tenders of Old Notes must be
cured within such time as the Company shall determine. Neither the Company, the
Exchange Agent nor any other person shall be under any duty to give notification
of defects or irregularities to holders of Old Notes or incur any liability for
failure to give such notification. Tenders of Old Notes will not be deemed to
have been made until such defects or irregularities have been cured or waived.
Any Old Notes received by the Exchange Agent that are not properly tendered and
as to which the defects or irregularities have not been cured or waived, or if
Old Notes are submitted in principal amount greater than the principal amount of
Old Notes being tendered, such unaccepted or non-exchanged Old Notes will be
returned by the Exchange Agent to the tendering holders, unless otherwise
provided in this Letter of Transmittal, as soon as practicable following the
Expiration Date.

     10. WAIVER OF CONDITIONS.  The Company reserves the absolute right to waive
any of the conditions in the Exchange Offer in the case of any tendered Old
Notes.

     11. NO CONDITIONAL TENDERS.  No alternative, conditional, irregular, or
contingent tender of Old Notes or transmittal of this Letter of Transmittal will
be accepted.

     12. MUTILATED, LOST, STOLE OR DESTROYED OLD NOTES.  Any holder whose Old
Notes have been mutilated, lost, stolen or destroyed should contact the Exchange
Agent at the address indicated herein for further instructions.

     13. REQUESTS FOR ASSISTANCE OR ADDITIONAL COPIES.  Questions and requests
for assistance and requests for additional copies of the Prospectus or this
Letter of Transmittal may be directed to the Exchange Agent at the address and
telephone number indicated herein. Holders may also contact their broker,
dealer, commercial bank, trust company or other nominee for assistance
concerning the Exchange Offer.

     14. ACCEPTANCE OF TENDERED OLD NOTES AND ISSUANCE OF OLD NOTES; RETURN OF
OLD NOTES.  Subject to the terms and conditions of the Exchange Offer, the
Company will accept for exchange all validly tendered Old Notes as soon as
practicable after the Expiration Date and will issue New Notes therefor as soon
as practicable thereafter. For purposes of the Exchange Offer, the Company shall
be deemed to have accepted tendered Old Notes when, as and if the Company has
given written or oral notice (immediately followed in writing) thereof to the
Exchange Agent. If any tendered Old Notes are not exchanged pursuant to the
Exchange Offer for any reason, such unexchanged Old Notes will be returned,
without expense, to the undersigned at the address shown in Box 1 or at a
different address as may be indicated herein under "Special Delivery
Instructions" (Box 3).

     15. WITHDRAWAL.  Tenders may be withdrawn only pursuant to the procedures
set forth in the Prospectus under the caption "The Exchange Offer -- Withdrawal
of Tenders of Old Notes."

                                       11

<PAGE>   1

                                                                    EXHIBIT 99.2

                         NOTICE OF GUARANTEED DELIVERY

                                      FOR
                   11 1/2% SENIOR SUBORDINATED NOTES DUE 2009
                                       OF

                             RAILWORKS CORPORATION

               PURSUANT TO THE PROSPECTUS DATED           , 1999

     This form must be used by a holder of 11 1/2% Senior Subordinated Notes due
2009 (the "Notes") of Railworks Corporation, a Delaware corporation (the
"Company"), who wishes to tender Old Notes to the Exchange Agent pursuant to the
guaranteed delivery procedures described in "The Exchange Offer -- Guaranteed
Delivery Procedures" of the Company's Prospectus, dated                     ,
1999 (the "Prospectus") and in Instruction 2 to the related Letter of
Transmittal. Any holder who wishes to tender Old Notes pursuant to such
guaranteed delivery procedures must ensure that the Exchange Agent receives this
Notice of Guaranteed Delivery prior to the Expiration Date of the Exchange
Offer. Capitalized terms used but not defined herein have the meanings ascribed
to them in the Prospectus or the Letter of Transmittal.

     THE EXCHANGE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M., NEW YORK
CITY TIME,                , 1999 UNLESS EXTENDED (THE "EXPIRATION DATE").

                           FIRST UNION NATIONAL BANK
                             (THE "EXCHANGE AGENT")

<TABLE>
<S>                                                  <C>
     By Overnight Carrier or by Hand:                     By Registered or Certified Mail:

        First Union National Bank                            First Union National Bank
 First Union Customer Information Center              First Union Customer Information Center
   Corporate Trust Operations -- NC1153                 Corporate Trust Operations -- NC1153
  1525 West W.T. Harris Boulevard -- 3C3               1525 West W.T. Harris Boulevard -- 3C3
         Charlotte, NC 28262-1153                               Charlotte, NC 28288
          Attention: Mike Klotz                                Attention: Mike Klotz
</TABLE>

                 By Facsimile (for Eligible Institutions only):

                                 (704) 590-7628
                             Confirm by telephone:
                                 (704) 590-7408

     Delivery of this instrument to an address other than as set forth above
will not constitute a valid delivery.
<PAGE>   2

Ladies and Gentlemen:

     Upon the terms and subject to the conditions set forth in the Prospectus
and the related Letter of Transmittal, the undersigned hereby tenders to the
Company, the principal amount of Old Notes set forth below pursuant to the
guaranteed delivery procedures set forth in the Prospectus and in Instruction 2
of the Letter of Transmittal.

     The undersigned hereby tenders the Old Notes listed below:

<TABLE>
<S>                                                           <C>                 <C>
- -----------------------------------------------------------------------------------------------------
                                                                  Aggregate            Aggregate
                                                                  Principal
                                                              Amount Represented       Principal
 Certificate Number(s) (if known) of Old Notes or                by Old Notes           Amount
 Account Number at the DTC                                      Certificate(s)         Tendered
- -----------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------
</TABLE>

                            PLEASE SIGN AND COMPLETE

Signatures of Registered Holder(s) or

Authorized Signatory:

Name(s) of Registered Holder(s):

Date:  _____________________ , 1999

Address:

Area Code and Telephone No.

     This Notice of Guaranteed Delivery must be signed by the holder(s) exactly
as their name(s) appear on certificates for Old Notes or on a security position
listing as the owner of Old Notes, or by person(s) authorized to become
registered holder(s) by endorsements and documents transmitted with this Notice
of Guaranteed Delivery. If signature is by a trustee, executor, administrator,
guardian, attorney-in-fact, officer or other person acting in a fiduciary or
representative capacity, such person must provide the following information.

                      PLEASE PRINT NAME(S) AND ADDRESS(ES)

(Name(s):

Capacity:

Address(es):

                                        2
<PAGE>   3

                                   GUARANTEE
                    (NOT TO BE USED FOR SIGNATURE GUARANTEE)

     The undersigned, a firm which is a member of a registered national
securities exchange or of the National Association of Securities Dealers, Inc.,
or is a commercial bank or trust company having an office or correspondent in
the United States, or is otherwise an "eligible guarantor institution" within
the meaning of Rule 17Ad-15 under the Securities and Exchange Act of 1934, as
amended, guarantees deposit with the Exchange Agent of the Letter of Transmittal
(or facsimile thereof), together with the Old Notes tendered hereby in proper
form for transfer (or confirmation of the book-entry transfer of such Old Notes
into the Exchange Agent's account at DTC described in the prospectus under the
caption "The Exchange Offer -- Guaranteed Delivery Procedures" and in the Letter
of Transmittal) and any other required documents, all by 5:00 p.m., New York
City time, on the third NASDAQ National Market trading day following the date of
execution hereof.

Name of firm
- --------------------------------------------------------------------------------
Address
- --------------------------------------------------------------------------------
                               (INCLUDE ZIP CODE)

Area Code and Tel. No.
- --------------------------------------------------------------------------------
                             (AUTHORIZED SIGNATURE)

Name
- ------------------------------------------------
(Please Print)

Title
- --------------------------------------------------
Dated   ,1999
- --------

     DO NOT SEND CERTIFICATES FOR OLD NOTES WITH THIS FORM.  ACTUAL SURRENDER OF
CERTIFICATES FOR OLD NOTES MUST BE MADE PURSUANT TO, AND BE ACCOMPANIED BY, AN
EXECUTED LETTER OF TRANSMITTAL.

                                        3
<PAGE>   4

                             RAILWORKS CORPORATION

                    INSTRUCTIONS TO REGISTERED HOLDER AND/OR
                     DTC PARTICIPANT FROM BENEFICIAL OWNER
                 OF 11 1/2% SENIOR SUBORDINATED NOTES DUE 2009

To Registered Holder and/or DTC Participant:

     The undersigned hereby acknowledge receipt of the Prospectus, dated
       , 1999 (the "Prospectus") of, Railworks Corporation, a Delaware
corporation (the "Company"), and the accompanying Letter of Transmittal (the
"Letter of Transmittal"), that together constitute the Company's offer (the
"Exchange Offer") to exchange 11 1/2% Senior Subordinated Notes due 2009 (the
"New Notes") that have been registered under the Securities Act of 1933, as
amended (the "Securities Act"), for its outstanding 11 1/2% Senior Subordinated
Notes due 2009 (the "Old Notes"). Capitalized terms used but not defined herein
have the meanings ascribed to them in the Prospectus.

     This will instruct you, the registered holder and/or DTC participant, as to
action to be taken by you relating to the Exchange Offer with respect to the Old
Notes held by you for the account of the undersigned.

     The aggregate face amount of the Old Notes held by you for the account of
the undersigned is (FILL IN AMOUNT):

          $          of the 11 1/2% Senior Subordinated Notes due 2009;

     With respect to the Exchange Offer, the undersigned hereby instructs you
(CHECK APPROPRIATE BOX):

          [ ] TO TENDER the following aggregate principal amount of Old Notes
              held by you for the account of the undersigned (INSERT PRINCIPAL
              AMOUNT OF OLD NOTES TO BE TENDERED, IF ANY): $

          [ ] NOT TO TENDER any Old Notes held by you for the account of the
              undersigned.

     If the undersigned instruct you to tender the Old Notes held by you for the
account of the undersigned, it is understood that you are authorized (a) to make
on behalf of the undersigned (and the undersigned, by its signature below,
hereby makes to you), the representations and warranties contained in the Letter
of Transmittal that are to be made with respect to the undersigned as a
beneficial owner, including but not limited to the representations that (i) the
undersigned's principal residence is in the state of (FILL IN STATE)      , (ii)
the undersigned is acquiring the New Notes in the ordinary course of business of
the undersigned, (iii) the undersigned has no arrangement or understanding with
any person to participate in the distribution of the New Notes, (iv) except as
otherwise disclosed in writing herewith, the undersigned is not an "affiliate,"
as defined in Rule 405 under the Securities Act, of the Company and, if the
undersigned is such an affiliate, that it will comply with the registration and
prospectus delivery requirements of the Securities Act to the extent applicable,
(v) if the undersigned is not a broker-dealer, that the undersigned is not
engaged in and does not intend to engage in the distribution of any New Notes,
or (vi) if the undersigned is a broker-dealer, that it will receive New Notes
for its own account in exchange for tendered Old Notes that were acquired as a
result of market-making activities or other trading activities and that it will
deliver a prospectus in connection with any resale of such New Notes; (b) to
agree, on behalf of the undersigned, as set forth in the Letter of Transmittal;
and (c) to take such other action as necessary under the Prospectus or the
Letter of Transmittal to effect the valid tender of such Old Notes.

                                        4
<PAGE>   5

                                   SIGN HERE

Name of beneficial owner(s):

Signature(s):

Name (please print):

Address:

Telephone number:

Taxpayer Identification or Social Security Number:

Date:

                                        5
<PAGE>   6

                           TENDER FOR ALL OUTSTANDING
                   11 1/2% SENIOR SUBORDINATED NOTES DUE 2009
                                IN EXCHANGE FOR
                   11 1/2% SENIOR SUBORDINATED NOTES DUE 2009
           THAT HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933
                                       OF

                             RAILWORKS CORPORATION

To Registered Holders:

     We are enclosing herewith the material listed below relating to the offer
(the "Exchange Offer") by Railworks Corporation (the "Company"), a Delaware
corporation, to exchange its 11 1/2% Senior Subordinated Notes Due 2009 (the
"New Notes") that have been registered under the Securities Act of 1933, as
amended (the "Securities Act"), for a like principal amount of the Company's
issued and outstanding 11 1/2% Senior Subordinated Notes Due 2009 (the "Old
Notes") upon the terms and subject to the conditions set forth in the
Prospectus, dated                     , 1999, and the related Letter of
Transmittal.

     Enclosed herewith are copies of the following documents:

          1. Prospectus dated                     , 1999;

          2. Letter of Transmittal;

          3. Notice of Guaranteed Delivery; and

          4. Instruction to Registered Holder and/or DTC Participant from
             Beneficial Owner.

     We urge you to contact your clients promptly. Please note that the Exchange
Offer will expire at 5:00 p.m., New York City time, on                     ,
1999, unless extended.

     The Exchange Offer is not conditioned upon any minimum number of Old Notes
being tendered.

     Pursuant to the Letter of Transmittal, each holder of Old Notes will
represent to the Company that (i) the New Notes acquired pursuant to the
Exchange Offer are being obtained in the ordinary course of business of the
person receiving such New Notes, whether or not such person is such holder, (ii)
neither the holder of the Old Notes nor any such other person is participating
in, intends to participate in or has an arrangement or understanding with any
person to participate in the distribution of such Notes, (iii) neither the
holder nor any such other person is an "affiliate" of the Company as defined in
Rule 405 under the Securities Act of the Company or, if such holder is such an
affiliate, that it will comply with the registration and prospectus delivery
requirements of the Security Act to the extent applicable, (iv) if the holder is
not a broker-dealer, that neither the holder nor such other person is engaged in
or intends to engage in the distribution of any New Notes, and (v) if the holder
is a broker-dealer, that it will receive New Notes for its own account in
exchange for tendered Old Notes that were required as a result of market-making
activities or other trading activities and that it will deliver a prospectus in
connection with any resale of such New Notes. By acknowledging that it will
deliver and by delivering a prospectus meeting the requirements of the
Securities Act in connection with any resale of such New Notes, a broker-dealer
will not be deemed to admit that it is an "underwriter" within the meaning of
the Securities Act.

     The enclosed Instruction to Registered Holder and/or DTC Participant from
Beneficial Owner contains an authorization by the beneficial owners of the Old
Notes for you to make the foregoing representations.

                                        6
<PAGE>   7

     The Company will not pay any fee or commission to any broker or dealer to
any other persons (other than the exchange agent for the Exchange Offer) in
connection with the solicitation of tenders of Old Notes pursuant to the
Exchange Offer. The Company will pay or cause to be paid any transfer taxes
payable on the transfer of Old Notes to it, except as otherwise provided in
Instruction 7 of the enclosed Letter of Transmittal.

     Additional copies of the enclosed material may be obtained from the
undersigned.

                                          Very truly yours,

                                          First Union National Bank

     NOTHING CONTAINED HEREIN OR IN THE ENCLOSED DOCUMENTS SHALL CONSTITUTE YOU
THE AGENT OF THE COMPANY OR THE EXCHANGE AGENT OR AUTHORIZE YOU TO USE ANY
DOCUMENT OR MAKE ANY STATEMENT ON THEIR BEHALF IN CONNECTION WITH THE EXCHANGE
OFFER OTHER THAN THE DOCUMENTS ENCLOSED HEREWITH AND THE STATEMENTS CONTAINED
THEREIN.

                                        7

<PAGE>   1

                                                                    EXHIBIT 99.3

            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER ON SUBSTITUTE FORM W-9

GUIDELINES FOR DETERMINING THE PROPER IDENTIFICATION NUMBER TO GIVE THE
PAYER.--Social Security numbers have nine digits separated by two hyphens: i.e.
000-00-0000. Employer identification numbers have nine digits separated by only
one hyphen: i.e. 00-0000000. The table below will help determine the number to
give the payer.

<TABLE>
<CAPTION>
- ----------------------------------------------------------
                                           GIVE THE
                                       SOCIAL SECURITY
    FOR THIS TYPE OF ACCOUNT:            NUMBER OF--
- ----------------------------------------------------------
<C>  <S>                            <C>
 1.  An individual's account.       The individual
 2.  Two or more individuals        The actual owner of
     (joint account)                the account or, if
                                    combined funds, any
                                    one of the
                                    individuals(1)
 3.  Husband and wife (joint        The actual owner of
     account)                       the account or, if
                                    joint funds, either
                                    person(1)
 4.  Custodian account of a minor   The minor(2)
     (Uniform Gift to Minors Act)
 5.  Adult and minor (joint         The adult or, if the
     account)                       minor is the only
                                    contributor, the
                                    minor(3)
 6.  Account in the name of         The ward, minor or
     guardian or committee for a    incompetent person(4)
     designated ward, minor, or
     incompetent person
 7.  a. The usual revocable         The grantor-
       savings trust account        trustee(3)
       (grantor is also trustee)
     b. So-called trust account     The actual owner(3)
       that is not a legal or
       valid trust under State law
 8.  Sole proprietorship account    The owner(5)
- ----------------------------------------------------------
</TABLE>

<TABLE>
<CAPTION>
- ----------------------------------------------------------
                                      GIVE THE EMPLOYER
                                        IDENTIFICATION
    FOR THIS TYPE OF ACCOUNT:            NUMBER OF--
- ----------------------------------------------------------
<C>  <S>                            <C>
 9.  A valid trust, estate, or      The legal entity (Do
     pension trust                  not furnish the
                                    identifying number of
                                    the personal
                                    representative or
                                    trustee unless the
                                    legal entity itself is
                                    not designated in the
                                    account title.)(3)
10.  Corporate account              The corporation
11.  Religious, charitable, or      The organization
     educational organization
     account
12.  Partnership account held in    The partnership
     the name of the business
13.  Association, club, or other    The organization
     tax-exempt organization
14.  A broker or registered         The broker or nominee
     nominee
15.  Account with the Department    The public entity
     of Agriculture in the name of
     a public entity (such as a
     State or local government,
     school district, or prison)
     that receives agricultural
     program payments
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</TABLE>

(1) List first and circle the name of the person whose number you furnish.
(2) Circle the minor's name and furnish the minor's social security number.
(3) List first and circle the name of the legal trust, estate, or pension trust.
(4) Circle the ward's, minor's or incompetent person's name and furnish such
    person's social security number.
(5) Show the name of the owner.

Note: If no name is circled when there is more than one name, the number will be
      considered to be that of the first name listed.


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