The U.S. Army Corps of Engineers has awarded a contract worth US$943,949 to M.J. Hughes Construction Inc. to install permanent concrete bulkheads in a juvenile fish collection channel at the 980-MW McNary hydropower project.
The Corps' Walla Walla District most recently solicited bids from small businesses for the work in August.
As per the contract, M.J. Hughes will replace three steel regulating weirs with six pre-cast concrete bulkheads. The bulkhead dimensions are 20 feet wide,10 feet tall and 1.5 feet thick. The area is to be dewatered using a contractor-fabricated temporary steel bulkhead.
The McNary hydropower project is located on the Washington/Oregon boundary along the Columbia River.