WALLA WALLA – The U.S. Army Corps of Engineers and Walla Walla County are partnering on a construction project to repair and improve locations within the Mill Creek Flood Control Zone. The estimated $10 million project will reduce overall flood risks to Walla Walla and the surrounding communities.
The work will include six small (less than 2.5 feet) increases in levee height; repair of a 300-foot section of concrete wall; removal of a damaged ceiling in the tunnel section; and repair of supporting pilings in the tunnel section.
The Walla Walla Board of County Commissioners and U.S. Army Corps of Engineers executed a project partnership agreement yesterday.
Design of the project is anticipated to begin in early 2023. Construction is expected to take place over two annual fish windows, tentatively scheduled to begin in July 2024 and be completed in early 2026.
Image via City of Walla Walla