Construction notifications

Construction closures and nighttime noise work

Cones blocking the ramp entrance to Alaskan Way Viaduct
This page contains SR 99 and Seattle street closures due to work on the Alaskan Way Viaduct Replacement Program. See bottom of page for other traffic resources from around the region.


SR 99 MAINLINE AND RAMP CLOSURES IN SEATTLE

Last updated: June 12, 2018

Full southbound SR 99 closure June 22-24

  • SR 99 southbound through Seattle will be fully closed from 9 p.m. Friday, June 22 until 6 a.m. Sunday, June 24. More details to come.

LOCAL SEATTLE STREETS

Last updated: June 12, 2018

North of Denny Way

  • The block of Sixth Avenue North between Harrison and Thomas streets remains in a long-term closure while crews complete north portal work.
  • Continuing work at the SR 99 Tunnel's north portal includes closing individual blocks for one to two weeks at a time for street restoration work. Upcoming closures include Sixth Avenue North between John Street and Denny Way.

View notice

Downtown waterfront

South of Yesler Way

  • Long-term closure: One lane of East Frontage Road is closed for construction, between South Atlantic Street and Royal Brougham Way.
  • Long-term closure: Beginning May 17, the sidewalk on the east side of East Frontage Road South between South Atlantic Street and South Royal Brougham Way will be closed.
  • One night closure: East Frontage Road South between South Atlantic Street and South Royal Brougham Way will be closed for approximately four hours the night of Tuesday, June 19.

UPCOMING NIGHTTIME NOISE WORK

Last updated: June 12, 2018

SR 99 tunnel project

  • June 11-23: Seattle Tunnel Partners may conduct nighttime work as part of surface street restoration work near the tunnel's north portal.

View notice

SR 99 Connections project

  • June 16: Contractor will conduct early morning (5 a.m.) trenching work in existing work zones on East Frontage Road South and on South Royal Brougham Way.
  • June 18: Contractor will conduct early morning (5 a.m.) saw cutting work in the intersection of South Royal Brougham Way and East Frontage Road South.
  • June 18-19: Contractor will rebuild a portion of the intersection of South Royal Brougham Way and East Frontage Road South. This work will involve a full closure of East Frontage Road South for approximately four hours during the night of Tuesday, June 19.