FY26 Willapa Bay Maintenance Dredging Bid Opening Details

The US Army Corps of Engineers, Seattle District is soliciting bids for the maintenance dredging of the Willapa Bay, specifically the Bay Center, Nahcotta, and Tokeland Federal Navigation Channels. The project involves dredging approximately 180,000 cubic yards of material using mechanical clamshell dredging. The work is expected to begin in summer 2026 and last for 3-7 months. The project also includes water quality monitoring and disposal of dredged material at designated sites. • The minimum required dredging depth varies from -10 ft to -15 ft MLLW, with a 2 ft overdepth at each location. • The project has a dynamic nature due to the Palix River at its confluence with Willapa Bay, which may affect the amount of dredging required. • The work window varies by project features, with specific in-water work windows for each location. • The project presents significant navigational hazards due to the exposed Pacific Ocean entrance, unmaintained channels, shifting shoals, and unpredictable weather. • The estimated construction price range for this project is between $5,000,000 and $10,000,000.