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Published on Oct 29, 2010
The Federal Highway Administration, Washington State Department of Transportation and the City of Seattle have identified a bored tunnel as the preferred alternative for replacing the downtown Seattle section of the Alaskan Way Viaduct, part of State Route 99. The proposed bored tunnel would minimize construction disruption, maintain a vital route for people and goods through downtown and improve the waterfront environment.
This drive-through simulation shows a design concept for the proposed SR 99 bored tunnel and the connections at the tunnel's portals. More information regarding the Alaskan Way Viaduct and Seawall Replacement Program is available at http://www.alaskanwayviaduct.org.