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



                         SCHEDULE 13G/A


   INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO
          RULES 13d-1(b) AND (c) AND AMENDMENTS THERETO
                   FILED PURSUANT TO 13d-2(b)

                       (Amendment No. 5)*


                        Northwest Pipe Co
                        (Name of Issuer)


                   Common Stock, no par value
                 (Title of Class of Securities)


                            667746101
                         (CUSIP Number)



*The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class
of securities, and for any subsequent amendment containing information
which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not
be deemed to be "filed" for the purpose of Section 18 of the Securities
Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of
that section of the Act but shall be subject to all other provisions of
the Act (however, see the Notes).

                                 - 1 -



----- -----------------------------------------------------------------
  1   NAME OF REPORTING PERSON
      S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)
      Benson Associates, LLC
      Federal ID No.  91-1797260
----- -----------------------------------------------------------------
  2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

                                                  (a) [-]
                                                  (b) [x]
----- -----------------------------------------------------------------
  3   SEC USE ONLY



----- -----------------------------------------------------------------
  4   CITIZENSHIP OR PLACE OF ORGANIZATION

      Oregon

------------------- ----- ---------------------------------------------
                      5   SOLE VOTING POWER

   NUMBER OF                  725,727
                    ----- ---------------------------------------------
     SHARES           6   SHARED VOTING POWER

  BENEFICIALLY                -0-
                    ----- ---------------------------------------------
  OWNED BY EACH       7   SOLE DISPOSITIVE POWER

    REPORTING                 725,727
                    ----- ---------------------------------------------
   PERSON WITH        8   SHARED DISPOSITIVE POWER

                              -0-
----- -----------------------------------------------------------------
  9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

      725,727

----- -----------------------------------------------------------------
 10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

      Not applicable

----- -----------------------------------------------------------------
 11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

      11.1%

----- -----------------------------------------------------------------
 12   TYPE OF REPORTING PERSON

      IA

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

                                 - 2 -



Item 1(a)  Name of Issuer:  Northwest Pipe Co

Item 1(b)  Address of Issuer's Principal Executive Offices:
                               12005 N Burgard
                               P O BOX 83149
                               Portland, OR  97203


Item 2(a)  Name of Person Filing:  Benson Associates, LLC

Item 2(b)  Address of Principal Business Office or, if none, Residence:
                               111 S.W. Fifth Avenue, Suite 2130
                               Portland, Oregon  97204

Item 2(c)  Citizenship:  Oregon

Item 2(d)  Title of Class of Securities:  Common Stock, no par value

Item 2(e)  CUSIP Number:  667746101


Item 3     If this statement is filed pursuant to Rules 13d-1(b) or
           13d-2(b), check whether the person filing is a:

           (e)  x  Investment Adviser registered under Section 203 of the
           Investment Advisers Act of 1940 --


Item 4     Ownership

           The following information is as of February 28, 2003:

           (a)  Amount Beneficially Owned:  725,727
           (b)  Percent of Class:  11.1%

           (c)  Number of shares as to which such person has:

                (i) Sole power to vote or to direct the vote:  725,727

                (ii) Shared power to vote or to direct the vote:  None

                (iii) Sole power to dispose or to direct the disposition
                      of:  725,727

                (iv) Shared power to dispose or to direct the
                     disposition of:  None


Item 5     Ownership of Five Percent or Less of a Class:

           If this statement is being filed to report the fact that as
           of the date hereof the reporting person has ceased to be the
           beneficial owner of more than five percent of the class of
           securities, check the following [  ].


Item 6     Ownership of More than Five Percent on Behalf of Another
           Person:

           Persons other than Benson Associates LLC have the right to
           receive dividends from or the proceeds of the sale of the
           listed security.  No such right to receive proceeds or
           dividends relates to more than 5 percent of the class.


Item 7     Identification and Classification of the Subsidiary which
           Acquired the Security Being Reported on by the Parent
           Holding Company:

           Not applicable


Item 8     Identification and Classification of Members of the Group:

           Not applicable


Item 9     Notice of Dissolution of Group:

           Not applicable


Item 10    Certification:

           By signing below the undersigned certifies that, to the best
           of their knowledge and belief, the securities referred to
           above were acquired in the ordinary course of business and
           were not acquired for the purpose of and do not have the
           effect of changing or influencing the control of the issuer
           of such securities and were not acquired in connection with
           or as a participant in any transaction having such purpose
           or effect.

                                 - 3 -



                            SIGNATURE

After reasonable inquiry and to the best of the knowledge and belief of
the undersigned, the undersigned certifies that the information set
forth in this statement is true, complete, and correct.

Benson Associates, LLC hereby disclaims beneficial ownership of the
securities held by it in a fiduciary capacity as set forth in this
Schedule 13G.

                              March 5, 2003
                                  (Date)

                              BENSON ASSOCIATES, LLC

                              By  /s/ Mark D. Cooper
                                  Member



     ATTENTION:  Intentional misstatements or omissions of fact
     constitute federal criminal violations  (See 18 USC 1001).