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Blog Tunnel Contract to Be Signed

Cascadia Center
January 6, 2011

Seattle will soon be one step closer to constructing a tunnel to replace to Alaskan Way Viaduct. As reported in the Seattle Times, by the close of business today, the state Department of Transportation will have signed a “$1.1 billion contract…for construction of its proposed Highway 99 tunnel.”

The four-lane passage from Sodo to South Lake Union would be drilled by a 58-foot-wide boring machine — the world’s widest — through glacial soils that are mostly stable, but abrasive and laced with groundwater and small boulders.

The state chose Seattle Tunnel Partners for its contract. Read more about the Viaduct and Seawall Replacement project here.

Cascadia Center

Founded in 1993, as the Cascadia Project, Discovery Institute’s Cascadia Center for Regional Development is an important force in regional transportation and sustainable development issues. Cascadia is known for its involvement in transportation and development issues in the Cascadia Corridor, Puget Sound and in the U.S.-Canadian cross-border realm. We’ve recently added to that mix through a major program to promote U.S. efforts to reduce reliance on foreign oil, including the earliest possible development and integration of flex-fuel, plug-in, hybrid-electric vehicles.