UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT
     Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934


 Date of Report (Date of earliest event reported)May 31, 2007 (May 25, 2007)
                                                 ---------------------------

                               L.B. Foster Company
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             (Exact name of registrant as specified in its charter)


      Pennsylvania                  000-10436                   25-1324733
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(State or other jurisdiction       (Commission              (I.R.S. Employer
   of incorporation)               File Number)            Identification No.)


 415 Holiday Drive, Pittsburgh, Pennsylvania                        15220
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(Address of principal executive offices)                         (Zip Code)


Registrant's telephone number, including area code   412-928-3417
                                                  -----------------------------


                                      None
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              (Former name or former address, if changed since last report.)


Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):


[ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)

[ ] Soliciting  material  pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
Act (17 CFR 240.13e-4(c))


Item 1.01

On May 25, 2007,  Registrant  and R.L.R.  Investments,  LLC ("RLR")  executed an
amendment, which is attached hereto and incorporated herein by reference, to the
Purchase and Sale Agreement dated March 29, 2007  ("Agreement")  under which the
Registrant  agreed to sell to RLR  approximately  61.1931  acres of real  estate
located in Harris County, Texas. Under the Agreement,  RLR had until on or about
May 28,  2007 to  determine  if the real estate was  suitable  for RLR's use. On
April 3, 2007, the Registrant filed a Form 8-K describing the Agreement.

RLR has determined that certain  restrictions on permissible hours of operations
at the real estate may interfere with RLR's contemplated use of the real estate.
Accordingly,   RLR  requested  an  extension  of  time  to  determine  if  these
restrictions could be satisfactorily  modified. Under the May 25, 2007 amendment
to the  Agreement,  RLR now has until  June 27,  2007 to  determine  if the real
estate is  suitable.  If RLR,  in its sole  judgment,  determines  that the real
estate is not suitable, RLR may terminate the Agreement without penalty.

Item 9.01 Exhibits 10.25.1 Amendment No. 1 dated May 25, 2007 to Purchase and Sale Agreement dated March 29, 2007 between Registrant, as Seller, and R.L.R. Investments, LLC, as Purchaser, related to sale of real estate in Harris County, Texas.

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. L.B. FOSTER COMPANY ------------------- (Registrant) Date: May 31, 2007 ------------ /s/ David J. Russo ------------------ David J. Russo Senior Vice President Chief Financial Officer and Treasurer

Exhibit Index - ------------- Exhibit Number Description - -------------- ----------- 10.25.1 Amendment No. 1 dated May 25, 2007 to Purchase and Sale Agreement dated March 29, 2007 between Registrant, as Seller, and R.L.R. Investments, LLC, as Purchaser, related to sale of real estate in Harris County, Texas.

                                 AMENDMENT NO. 1
                                       TO
                           PURCHASE AND SALE AGREEMENT


     THIS AMENDMENT NO. 1 TO PURCHASE AND SALE AGREEMENT  (this  "Amendment") is
executed  as of  this  25th  day  of  May,  2007,  by  L.B.  FOSTER  COMPANY,  a
Pennsylvania corporation (the "Seller") and R.L.R. INVESTMENTS,  L.L.C., an Ohio
limited liability company (the "Buyer"), with reference to the following facts:

                                    RECITALS

     A. Seller and Buyer entered into that certain  Purchase and Sale  Agreement
dated March 29, 2007 (the  "Agreement"),  whereby Buyer agreed to buy and Seller
agreed to sell certain Property as defined therein.

     B.  Seller and Buyer  desire to amend the  Agreement  and extend the Review
Period (as defined in the Agreement) for an additional thirty (30) days.

     C. Buyer and Seller  desire to amend that  certain  Release and  Settlement
Agreement, dated July 5, 1984 between Seller and certain residential homeowners,
which  agreement is filed under Harris  County  Clerk's File No.  J592773 and as
Document  ###-##-#### among the land records of Harris County,  Texas,  which is
defined as the Southern  Boundary  Settlement  Agreement on Exhibit B, Item 6 of
the Agreement.

     D. All capitalized  terms used herein,  but not defined herein,  shall have
the same meanings as set forth in the Agreement.

     NOW,  THEREFORE,  in  consideration  of the mutual covenants and agreements
hereinafter contained, the parties agree as follows:

     1.  Notwithstanding  any terms to the contrary  contained in the Agreement,
the Review  Period under  Paragraph  4(a) shall be extended from May 28, 2007 to
June 27, 2007.

     2. Seller  hereby  agrees to allow Buyer to negotiate and attempt to modify
the Southern Boundary  Settlement  Agreement with the residential  homeowners to
allow the loading and  unloading  of trucks on the parcel  south of the railroad
spur. Seller also agrees to cooperate and assist Buyer in modifying the terms of
conditions  of  the  Southern  Boundary  Settlement  Agreement,   including  the
execution of a modified  agreement  upon such terms as Seller  shall  approve in
writing,  provided  that Seller shall not be required to incur any cost in doing
so.

     3. In all other respects, the Agreement shall remain unmodified and in full
force and effect.

4. This Amendment may be executed in any number of counterparts, each of which counterpart shall be for all purposes deemed to be an original, but all of which counterparts shall together constitute but one and the same Agreement. A facsimile signature shall be as valid as an original signature. [Signature page follows.]

IN WITNESS WHEREOF, the parties have executed this Amendment as of the date and year first above written. SELLER: L.B. FOSTER COMPANY By: /s/ David J. Russo ---------------------- Printed Name: David J. Russo -------------- Title: Senior Vice President, CFO & Treasurer -------------------------------------- BUYER: R.L.R. INVESTMENTS, L.L.C. By:/s/ Donald R. DeLuca ----------------------- Donald R. DeLuca, Vice President & General Counsel