Viaduct removal

Current view of the viaduct

After the new State Route 99 tunnel opens to drivers, the Alaskan Way Viaduct along Seattle's waterfront will be removed to make way for a new surface street built by the City of Seattle. This project will help transform Seattle’s waterfront while removing a vulnerable structure from our road network.

Neighborhood Drop-In Sessions

WSDOT and Kiewit are hosting drop-in sessions in early December for neighbors to come learn more about what to expect from the project, meet the project team, and ask questions.

Tuesday, Dec. 4, 2018 | 5 - 8 p.m.
Waterfront Space, 1400 Western Ave., Seattle, WA
Wednesday, Dec. 5, 2018 | 11 a.m. - 2 p.m.
Waterfront Space, 1400 Western Ave., Seattle, WA
Monday, Dec. 10, 2018 | 5 - 8 p.m.
Seattle Center, Armory Loft Room 2, 305 Harrison St., Seattle WA
Additional accommodation requests for people with disabilities can be made by contacting the WSDOT Diversity/ADA Affairs team at or by calling toll free, 855-362-4ADA (4232). Persons who are deaf or hard of hearing may make a request by calling the Washington State Relay at 711.

Project at a glance:

  • Shifts Alaskan Way to the west of the viaduct [DONE].
  • Removes the Alaskan Way Viaduct.
  • Closes and fills the Battery Street Tunnel.
  • Rebuilds Aurora Avenue North between Harrison Street and Denny Way, and reconnects Thomas and John cross-streets.
  • Begins shortly after the SR 99 tunnel opens to drivers.

On May 16, WSDOT announced Kiewit Infrastructure West Co. as the apparent-best-value contractor, which means Kiewit submitted the best combination of technical proposal and price for completing the work. We will have more information to share late summer/early fall about the contractor’s schedule and approach to the work.

+ Viaduct removal overview

+ Scope of work

+ Project schedule

+ Process of selecting a contractor

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