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   February 22, 2007  (February 22, 2007)
 reported)                                --------------------------------------


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


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


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


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

                                      None
- --------------------------------------------------------------------------------
                (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 ommunications  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 5.04     Temporary Suspension of Trading Under Registrant's
              Employee Benefit Plans


A temporary  suspension of trading under the Registrant's  sponsored 401(k) Plan
(the "Plan") will be in effect from 4:00 p.m.  Eastern  Daylight Savings Time on
March 28, 2007 to, it is expected,  April 4, 2007 (the "Blackout  Period").  The
Blackout  Period is  required  due to the Plan  changing,  during  the  Blackout
Period,  the valuation of the Plan's L.B.  Foster Common Stock Fund (the "Fund")
from unitized to real time trading.

Currently,  the Fund is a  unitized  fund  (stock  is held in units  instead  of
shares),  which units are comprised of Registrant's common stock plus short term
investments.  During the conversion to the real time environment, the short term
investment  portion  of the  Fund  will be used to  purchase  actual  shares  of
Registrant's  common stock. Once the Fund is converted,  participants will trade
actual  shares  of  stock  instead  of  units.   During  the  Blackout   Period,
participants  will be  unable  to  perform  exchanges,  make  future  investment
elections, obtain a loan or obtain a distribution with respect to the Fund.

Registrant has designated its Vice President - Human Resources,  Brian H. Kelly,
to respond to inquiries about the Blackout Period. Mr. Kelly can be contacted at
the following address and telephone number.

          Brian H. Kelly
          Vice President - Human Resources
          L.B. Foster Company
          415 Holiday Drive
          Pittsburgh, PA  15220

          412-928-3491

Pursuant to Section 306(a)1 of the Sarbanes-Oxley  Act,  Registrant's  executive
officers and directors may not purchase,  sell or otherwise  acquire or transfer
any of the Company's common stock during the Blackout Period.





                                   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:  February 22, 2007
       -----------------
                                           /s/David J. Russo
                                           -----------------
                                           David J. Russo
                                           Senior Vice President,
                                           Chief Financial Officer and Treasurer