NWPX Infrastructure, Inc. — Director's Dealing 2010

May 4, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: NORTHWEST PIPE CO (NWPX)
CIK: 0001001385
Period of Report: 2010-04-30

Reporting Person: DUNHAM BRIAN W (Director, President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-04-30	Common Stock	M	35945	$13.563	Acquired	169382	Direct
2010-04-30	Common Stock	F	20213	$24.12	Disposed	149169	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-04-30	Incentive Stock Option (right to buy)	$13.563	M	35945	Disposed	2010-05-02	Common Stock (35945)	Direct

Footnotes

F1: Represents shares withheld by the issuer for payment of exercise cost consistent with company policy.