Exhibit 10.58


                            Special Bonus Arrangement


     Subject to Mr. Kasel then being  employed by L.B.  Foster Company or any of
its wholly owned  subsidiaries  (collectively the "Company"),  the Company shall
pay $35,750 to Mr. Kasel on each of August 10, 2006, August 10, 2007, August 10,
2008 and August  10,  2009 (or as soon  thereafter  as is  practical  but in all
events no later than 2 1/2 months after the end of each  applicable  year) minus
(for each payment) the amount, if any, by which the average closing price of the
Company's  common stock for all trading days from June 1 to July 31,  inclusive,
of the  applicable  year is less than  $14.77/share,  multiplied  by 6,250.  All
payments shall be subject to required or appropriate withholdings.

     Mr.  Kasel  shall not be  entitled to any  payments  hereunder  if, for any
reason,  he is not  employed  by the  Company on the date a payment is due.  Mr.
Kasel's rights to any payments hereunder are not assignable or transferable. For
purposes of the Company's  benefit plans, all amounts received  hereunder by Mr.
Kasel shall be treated as employee ordinary income compensation, unless contrary
to the provisions of the applicable plan.

     This arrangement does not give any right or guarantee to future employment,
it being  understood  that Mr. Kasel remains an employee "at will".  L.B. Foster
Company shall have the right to construe and interpret this  arrangement and its
good faith  interpretations and determinations shall be final and binding on all
parties.




                             Effective May 24, 2006

                             L.B. Foster Company

                             By: /s/ Stan L. Hasselbusch
                                 -----------------------
                                 Chief Executive Officer, pursuant
                                 to 12/6/05 authorization by Board
                                 of Directors.