How to bid on Duwamish Waterway Maintenance Dredging for the Dept of the Army

What the agency is buying

The U.S. Army Corps of Engineers needs a contractor for maintenance dredging of the Duwamish Waterway federal navigation channel in Seattle, Washington. This project involves removing up to 140,000 cubic yards of sediment using a clamshell dredge. The dredged material will be disposed of at the Elliot Bay Open Water Disposal Site.

The work is scheduled to occur during the dredging window of February 15 to March 15, 2027. This is a construction opportunity estimated to be between $1 million and $5 million, and it is entirely set aside for small businesses.

Key dates and deadlines

This pre-solicitation notice was published on July 22, 2026. The deadline for submitting bids is August 20, 2026, at 1:00 PM ET. All proposals must be submitted by this time to be considered.

Who this opportunity suits

This opportunity is suitable for small businesses specializing in construction, particularly those with expertise in dredging operations. Firms with experience in clamshell dredging and managing sediment disposal at open water sites will be well-suited. The project's magnitude and specific requirements for environmental considerations suggest a need for experienced contractors in marine construction and environmental compliance.

How to respond

To access the full solicitation details and instructions for bid submissions, you need to view the original source on the portal. Click the provided link to open the opportunity. If the first click takes you to the portal's homepage, click the link again to go directly to the bid. You may need to create a free account on the portal to view all documents, though this is not always required.

Tips for a competitive response

When preparing your response, carefully review all attached solicitation documentation for complete details and requirements. Pay close attention to the specific dredging depths and overdepths for each section of the waterway. Highlight your firm's experience with similar dredging projects, especially those involving clamshell dredges and open water disposal.

Ensure your proposal clearly outlines your approach to minimizing environmental impacts, as this is a stated consideration for the project. Provide a detailed plan for completing the work within the specified February 15 to March 15, 2027 dredging window. Double-check all submission instructions and deadlines to ensure your bid is compliant and submitted on time.