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: May 10, 2018

  • There are no highway closures planned at this time.

LOCAL SEATTLE STREETS

Last updated: May 17, 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 Thomas Street near Sixth Avenue North, and Sixth Avenue North between Thomas and John streets.

View notice

Downtown waterfront

  • Temporary single lane and parking closures along single blocks on or near First Avenue while STP crews remove ground-monitoring equipment.

South of Yesler Way

  • SR 99 Connections Project: One lane of East Frontage Road is closed for construction, between South Atlantic Street and Royal Brougham Way.
  • SR 99 Connections Project: Beginning May 17, the sidewalk on the east side of East Frontage Road between South Atlantic Street and Royal Brougham Way will be closed.

View notice

UPCOMING NIGHTTIME NOISE WORK

Last updated: May 17, 2018

SR 99 Connections Project

  • There is no upcoming night work scheduled at this time.