After the new State Route 99 tunnel opens to drivers, the Alaskan Way Viaduct along Seattle's waterfront will be demolished 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.

Current view of the viaduct

Project at a glance:

  • 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.
  • More information coming this spring and summer.

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 in the coming weeks about the contractor’s schedule and approach to the work.


+ Demolition overview

+ Scope of work

+ Project schedule

+ Process of selecting a contractor

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