Home > Missions > Civil Works > Programs and Projects > Projects > Seattle Harbor

Contact Seattle Harbor GI

Collapse All Expand All

Click here to expand contentClick here to collapse content  Mail
        Attn: Seattle Harbor GI
        U.S. Army Corps of Engineers
        P.O. Box 3755
        Seattle, WA    98124

Seattle Harbor Navigation Improvement Project

The Corps and Port of Seattle are completing a feasibility study to evaluate navigation improvements to Seattle Harbor’s East and West Waterways. Navigational challenges were identified and current authorized depths of 34 to 51 feet below mean lower low water do not meet today’s larger container ship draft requirements.

The Port of Seattle is a major gateway for containerized traffic. To remain a competitive Pacific trade route port, it must have sufficient water depth for partially loaded vessels to call and take on additional cargo.

The Tentatively Selected Plan is the combination of deepening in both waterways to a depth of 57 feet below mean lower low water, increasing channel width by 50 feet, plus widening of approach reaches to 700 feet for improving navigation safety at the entrance to each channel.