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Viaduct Closure and Seattle Squeeze Information

As you may know, the closure of the Alaskan Way Viaduct is approaching. In preparation, we want to provide you information that may be helpful to share with your employees and customers. 

We also want to provide you a timeline of major downtown projects that will impact traffic beginning in January and over the next few years, along with some tips for preparation and contact information: 


January 4, 2019 | SR 99 Stadium Ramps Close: Northbound SR 99 on-ramp from Royal Brougham Way and Southbound SR 99 off-ramp to S Atlantic Street close about one week before the full closure to allow for work on connections to the new SR 99 tunnel. 

January 11, 2019 | Alaskan Way Viaduct Closes: WSDOT will close SR 99 through downtown Seattle for approximately three weeks to build roadway and ramp connections, realign SR 99 and open the new SR 99 tunnel. 

Early February 2019 | SR 99 Tunnel Opens: The new 2-mile stretch of SR 99 tunnel opens to traffic. After the tunnel opens the northbound off-ramp todowntown will remain closed for up to two weeks.

Early 2019 – 2020 | Alaskan Way Viaduct Removal and Related Projects: After the tunnel opens, AWV demolition begins by the waterfront, the Battery Street Tunnel will be decommissioned, and surface streets around Aurora Ave N will be reconnected. 

March 2019 | Bus Service Ends in the Light Rail Tunnel: King County Metro bus routes 41, 74, 101, 102, 150, 255 and Sound Transit Express Route 550 buses will no longer use the transit tunnel and will operate on surface streets, including a new transit pathway on 5th and 6th Avenues. 

2019 – 2021 | Waterfront Construction: Built by the City of Seattle’s Office of the Waterfront, the new Alaskan Way street will be transformed along the waterfront with a new promenade and connections to the Pike Place Market.  

2019 | SR 99 Tunnel TollingThe SR 99 tunnel will be free to use when it opens for a period before tolling starts.  Tolling could begin as early as summer 2019. 

Under construction thru 2022 | WA State Convention Center (WSCC) Addition: WSCC has launched a transformative project that will provide economic and public benefits, including affordable housing, cycling, and pedestrian improvements, and a study of lidding more of I-5 – as part of its $92 million expansion. Construction is expected to be complete in Q3 2021, with the addition open to the public in Q1 2022. 

Under construction thru December 2020 | Seattle Center Arena: Oak View Group (OVG) has partnered with the City of Seattle to redevelop the Arena at Seattle Center. The newly renovated Arena will be a vital asset for the residents of our region and visitors from around the world for existing and future professional sports teams, other sporting events, concerts, and shows.  

Under construction thru 2021 | Rainer Tower 2 Construction: At the corner of 5th Ave and Union St, Rainier Tower 2 is a new building being built in Rainier Square and will become an iconic new skyscraper on Seattle’s horizon. It will house new space for offices, retail stores, a hotel, residential units, and parking. 

What you can do to plan and prepare

HERE is a fact sheet to share and help prepare for the Seattle Squeeze


Seattle Department of Transportation
Phone: 206-684-7623
Twitter: @seattledot and @SDOTtraffic

Washington State Department of Transportation
24-hour Construction Hotline: 1-888-298 5463
Twitter: @BerthaDigsSR99 and #Realign99 

King County Metro
Twitter: @kcmetrobus

Commute Seattle
Phone: 206-613-3206