VANCOUVER, WA--(Marketwire - June 8, 2009) - Northwest Pipe Company (NASDAQ: NWPX) reported today that it has received a commitment from Oscar Renda Contracting of Roanoke, TX to supply pipe for the Bi-County Water Tunnel for the Washington Suburban Sanitation Commission.

The Company will supply approximately 29,000 feet of 84" steel pipe valued at approximately $11 million for an engineered and custom fabricated piping system. The pipe is expected to be manufactured in the Company's Parkersburg, West Virginia division with delivery scheduled in the first quarter of 2011.

The Bi-County Tunnel project is a 5.3 mile tunnel and associated steel pipe liner. The water main will be part of a transmission system to deliver potable water from Washington Suburban Sanitary Commission's Potomac Water Treatment Plant to points in Prince George's County, Maryland.

Northwest Pipe Company manufactures welded steel pipe and other products in two business groups. Its Water Transmission Group is the 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 applications including construction, agricultural, energy, traffic and other commercial and industrial uses. The Company is headquartered in Vancouver, Washington and has ten manufacturing facilities across the United States and Mexico.

This release contains forward-looking statements, including statements regarding the project described above. These statements reflect management's current information about the project mentioned above and 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 360-397-6250