Viaduct demolition at Marion Street begins Friday Sept. 6

Posted on Sep 4 2019 3:59 PM

Millions of ferry passengers have walked the Marion Street pedestrian bridge to and from Colman Dock but after decades of operation this well-travelled path is finally changing. Starting around 10:30 p.m. this Thursday night, Sept. 5, crews in charge of demolishing the Alaskan Way Viaduct will remove the bridge’s span over Alaskan Way and haul it away.

During this work, Alaskan Way will close between Yesler Way and Madison Street. The roadway closure starts at 10 p.m. Thursday, Sept. 5 and ends by 5 a.m. Friday, Sept 6. When Alaskan Way reopens Friday morning, Marion Street will be closed at Alaskan Way as demolition teams start removing one of the last remaining double-deck sections of the Alaskan Way Viaduct.


Keeping people moving

Keeping people moving safely to and from Colman Dock is important. After the old bridge is gone, uniformed police officers will manage intersections on Alaskan Way to ensure ferry passengers can safely cross. Officers will remain in place until a new, temporary pedestrian bridge opens along with the first section of the new Colman Dock ferry terminal. Washington State Ferries’ contractor is currently completing final safety checks and certifications necessary to shift ferry operations to the new terminal.

During the demolition across from the ferry terminal, several nearby streets will remain open. Pedestrians can use Columbia Street, Madison Street and Yesler Way to reach Alaskan Way. People with disabilities can continue to use the existing street-level elevators at Marion Street to reach the upper level of Colman Dock until new elevators at Pier 50 near the passenger-only ferry terminal are open. Ferry riders can check the WSF website for the latest information about Colman Dock construction.

Drivers and bicycle riders should be aware that Alaskan Way will be narrowed to two lanes south of Marion Street. Anyone traveling to this area should allow extra time to reach their destination. 

Demolition progress

Demolition of the Alaskan Way Viaduct is close to 90% complete. Removing the old Marion Street bridge and the remaining viaduct at Marion Street are critical steps toward reaching the demolition finish line. After Marion Street demolition, there is one final piece of disruptive work. On Sept. 12, the intersection at South Dearborn Street and First Avenue South will close for 10 days as workers remove the old ramp structure above.

Traffic backups during the South Dearborn Street closure could be significant and we ask drivers to consider alternate routes or ways of getting around, including exiting SR 99 at Spokane Street, using transit or taking the King County Water Taxi. We appreciate people’s patience as we coordinate multiple construction projects that will ultimately keep people moving to and through Seattle.

Want to be notified of what’s closed, what’s open, and what comes next? Subscribe to our Friday construction emails. You can also follow demolition progress on our interactive demolition map.

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