Alaskan Way Viaduct/SR 99 Replacement Tunnel Project

The Washington State Department of Transportation (WSDOT) will demolish the existing overhead roadway and open a new tunnel along the city’s Central Waterfront and beneath downtown Seattle.

January 11 – early February, 2019: the most challenging period for mobility:

  • The Alaskan Way Viaduct/SR Route 99 closes permanently to all traffic, forcing 90,000 daily drivers to find alternate routes

  • SR Route 99 closed between Spokane Street at the south to the Belltown neighborhood to the north

  • For drivers heading south:

    • exit to the stadiums and S. Atlantic Street will close a week before the viaduct shuts down

    • exit to the CenturyLink Field and Safeco Field and S. Atlantic Street will close a week before the viaduct shuts down

    • SR-99 restricted to one lane. The Battery Street Tunnel will remain open, but all drivers will be forced to exit at Western Avenue

  • For drivers heading north:

    • exit to Alaskan Way and Downtown Seattle will open two weeks after the tunnel as this ramp will take longer to finish

Recommended Transportation Resources

Seattle Department of Transportation (SDOT)

Washington Department of Transportation (WSDOT)

Metro Transit Trip Planner

Sound Transit (light rail, rail) Trip Planner

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Tip for Visitors:

LINK Light rail is an excellent alternative between the airport and downtown hotels and convention center; travel time is usually around 30-40 minutes one way; https://www.soundtransit.org/ride-with-us/know-before-you-go/new-to-sound-transit