Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
BLOEM ALEC C
   2. Issuer Name and Ticker or Trading Symbol
FOSTER L B CO [FSTR] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Sr. V.P. Concrete Products
(Last)
(First)
(Middle)
L.B. FOSTER COMPANY, 1660 HOTEL CIRCLE NORTH, SUITE 304		 3. Date of Earliest Transaction (Month/Day/Year)
05/04/2006
(Street)

SAN DIEGO, CA 92108		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 05/04/2006   M   10,000 A $ 4.38 10,000 D  
Common Stock 05/04/2006   M   15,000 A $ 5.375 25,000 D  
Common Stock 05/04/2006   M   25,000 A $ 3.44 50,000 D  
Common Stock 05/04/2006   M   6,000 A $ 2.75 56,000 D  
Common Stock 05/04/2006   M   9,000 A $ 3,065 65,000 D  
Common Stock 05/04/2006   S   6,000 D $ 22.81 59,000 D  
Common Stock 05/04/2006   S   2,500 D $ 22.4 56,500 D  
Common Stock 05/04/2006   S   2,500 D $ 22.455 54,000 D  
Common Stock 05/04/2006   S   7,500 D $ 22.77 46,500 D  
Common Stock 05/04/2006   S   1,200 D $ 22.85 45,300 D  
Common Stock 05/04/2006   S   3,500 D $ 22.922 41,800 D  
Common Stock 05/04/2006   S   5,000 D $ 23.017 36,800 D  
Common Stock 05/04/2006   S   5,000 D $ 23.28 31,800 D  
Common Stock 05/04/2006   S   6,000 D $ 23.251 25,800 D  
Common Stock 05/04/2006   S   4,000 D $ 23.23 21,800 D  
Common Stock 05/04/2006   S   2,500 D $ 23.19 19,300 D  
Common Stock 05/04/2006   S   1,500 D $ 23.212 17,800 D  
Common Stock 05/04/2006   S   2,800 D $ 23.256 15,000 D  
Common Stock 05/04/2006   S   1,000 D $ 23 14,000 D  
Common Stock 05/04/2006   S   5,000 D $ 23.28 9,000 D  
Common Stock 05/04/2006   S   9,000 D $ 23.17 0 D  
Common Stock               5,072 I Est. 401(k) share equivalent

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Option to Buy $ 4.38 05/04/2006   M     10,000 10/23/1998 10/22/2008 Common 10,000 (1) 0 D  
Option to Buy $ 5.375 05/04/2006   M     15,000 10/19/1999 10/18/2009 Common 15,000 (1) 0 D  
Option to Buy $ 3.44 05/04/2006   M     25,000 10/11/2000 10/10/2010 Common 25,000 (1) 0 D  
Option to Buy $ 2.75 05/04/2006   M     6,000 02/02/2001 02/01/2011 Common 6,000 (1) 0 D  
Option to Buy $ 3.65 05/04/2006   M     9,000 05/09/2001 05/08/2011 Common 9,000 (1) 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
BLOEM ALEC C
L.B. FOSTER COMPANY
1660 HOTEL CIRCLE NORTH, SUITE 304
SAN DIEGO, CA 92108		       Sr. V.P. Concrete Products  

Signatures

 Alec C. Bloem, by attorney in fact David L. Voltz   05/05/2006
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Intentionally left blank

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