Northwest Pipe Company Announces $12 Million Order

VANCOUVER, WA--(Marketwire - September 14, 2009) - Northwest Pipe Company (NASDAQ: NWPX) announced today that it has received a commitment from COP Construction, LLC, to supply pipe for the Spanish Fork Pipeline - Springville Reach project, owned by the Central Utah Water Conservancy District, to furnish approximately 25,000 linear feet of 60" steel water pipe and fittings. The value of the pipe order is approximately $12,000,000. The pipe will be manufactured at the Adelanto California facility of Northwest Pipe Company. Delivery will begin in the fourth quarter of 2009.

This project is part of the Central Utah Project Completion Act (CUPCA) enacted in 1992. It removed responsibility for completing the Central Utah Project (CUP), a federal water project, from the Bureau of Reclamation. CUPCA then distributed responsibility for the project to the local water district -- the Utah Water Conservancy District. CUP is the largest water resource development program ever undertaken in the State. Water developed by the Central Utah Project will be used for municipal, industrial, irrigation, hydroelectric power, fish, wildlife, conservation and recreation. The project will improve flood control capability and assist in the water quality control. This project is for a continuation of a pipeline from Strawberry Reservoir to the Provo Canal.

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 this project 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, changes in preliminary estimates of financial results in connection with finalization of such results 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