Elliott Bay Seawall construction
Elliott Bay Seawall Construction / SeattleWA
How do you revitalize Seattle's waterfront and protect the Puget Sound at the same time?

The Mortenson-Manson Joint Venture team was selected by the City of Seattle as the general contractor/construction manager (GC/CM) for the $220 million Elliott Bay Seawall reconstruction project at the waterfront in downtown Seattle.

The first phase, beginning fall 2013, will span a 3,720-foot-long south stretch of the waterfront — the most deteriorated section known as the central seawall. The second phase will replace the northern seawall. Both phases of the project will replace seawall structures along the waterfront, originally constructed between 1916 and 1934, and range from 15 to 60 feet wide.

The project consists of construction of the central portion of the seawall from South Washington Street to the northern edge of Pier 63 (roughly Virginia Street). This includes constructing a new earthquake-resistant system that will support the street and right-of-way, provide access to the waterfront piers, improve marine habitat, and support upland uses. The successful completion of this project will form the foundation upon which the upland improvements in the Waterfront Program will rest.

The existing Central Seawall structure is approximately 3,720 feet long. The seawall retains and supports the Alaskan Way roadway fill, utilities, and upland areas; provides protection from the tidal waters of Elliott Bay; and provides access to many adjacent pile-supported pier structures, including the historic Washington Street Boat Landing structure, which will also be refurbished as part of the Elliott Bay Seawall project.

Facts And Figures

Delivery Methods

General Contractor
Construction Manager at Risk

The Team