Posted on October 31, 2025
Background
The U.S. Army Corps of Engineers (USACE), Seattle District, is conducting market research to identify interested and qualified contractors for a planned maintenance dredging project in Grays Harbor, Washington.
This work is scheduled to be executed over three consecutive dredging seasons between July 2026 and February 2029, as part of the Grays Harbor and Chehalis River Federal Navigation Project.
Work Details
The selected contractor will be responsible for the mechanical clamshell dredging of approximately 1 million cubic yards (CY) of sediment per season, for each of the three dredging seasons.
Work will occur annually during the approved in-water work window from July 16 through February 14. Dredging activities must be suspended during a mandatory seasonal shutdown period—typically from late September through December 1—to accommodate Tribal fishing activities.
Dredging will take place within the federally authorized navigation channel, specifically in the following reaches: Aberdeen, Cow Point, Cow Point Turning Basin, Hoquiam North Channel, and the Crossover Channel.
Dredged material will be transported via bottom dump barge and placed at one of two disposal sites: from mid-July through early November at the South Jetty Beneficial Placement Site, and from November through mid-February at the Point Chehalis Open Water Placement Site.
All disposal activities must comply with project specifications and environmental guidelines. The contractor will also be required to perform turbidity monitoring during dredging and disposal operations.
Period of Performance
The contract work is scheduled to be executed over three consecutive dredging seasons between July 2026 and February 2029.
Place of Performance
Grays Harbor, Washington
