PORTLAND, OR--(Marketwire - September 24, 2007) - Northwest Pipe Company (NASDAQ: NWPX) reported today that it was named as pipe supplier by S.J. Louis Construction of Waite Park, Minnesota for the Folsom South Canal-Clay Station to Jack Tone Road Pipeline for the East Bay Municipal Utility District near Sacramento, California.

The Company will supply approximately 33,000 feet of steel pipe valued at approximately $10 million for an engineered and custom fabricated piping system. The pipe is expected to be manufactured in the Company's Adelanto, California and Portland, Oregon divisions with delivery scheduled to begin in the first quarter of 2008.

Northwest Pipe Company manufactures welded steel pipe and other products in three business segments. Its Water Transmission Group is a leading supplier of large diameter, high-pressure steel pipe products that are used primarily for water infrastructure in North America. Its Tubular Products Group manufactures smaller diameter steel pipe for a wide range of construction, agricultural, energy, industrial and mechanical applications. Its Fabricated Products Group manufactures propane tanks and other fabricated products. The Company is headquartered in Portland, Oregon and has ten manufacturing facilities across the United States and Mexico.

This release contains forward-looking statements, including but not limited to those regarding the project described above. These statements reflect management's current views and estimates of market circumstances, industry conditions and Company performance. Actual results could vary materially from the description contained herein due to many factors including market demand, operating efficiencies, availability and price of raw materials, and other risks described from time to time in the Company's reports to the Securities and Exchange Commission.

Contact Information: For more information, contact: Brian Dunham 503-946-1200