Alaskan Way Viaduct Replacement Construction Closures

Visit WSDOT’s website for a complete list of closures. Closure information changes frequently, so remember to check for updates throughout the week.

Highlights for Friday, July 13 – Monday, July 23

Corridor-wide:

  • Both directions of SR 99 (Aurora Bridge) will close overnight Thursday, July 12. Southbound SR 99 will close between North 39th Street and Raye Street from 10 p.m. Thursday, through 5 a.m., Friday, July 13. Northbound SR 99 will close between Western Avenue and North 39th Street from 11:59 p.m. to 5 a.m.

North end:

  • Through late August, the right lane of southbound SR 99 is closed around-the-clock from Republican to Harrison streets. Access to and from southbound SR 99 is closed from Republican and Harrison streets.
  • John Street will be closed between Sixth Avenue North and Aurora Avenue North from 7 a.m. to 7 p.m. Thursday, July 12 and Friday, July 13. Local access will be maintained from Sixth Avenue North.
  • Thomas Street will be closed between Sixth Avenue North and Taylor Avenue North from 7 a.m. to 5 p.m.  Friday, July 13.
  • Flaggers will alternate traffic on Thomas Street between Sixth Avenue North and Aurora Avenue North from 7 a.m. to 5 p.m. on Monday, July 16, and Tuesday, July 17.
  • Northbound Sixth Avenue North between Harrison and Thomas streets will be closed from 7 a.m. to 5 p.m. on Wednesday, July 18 and Thursday, July 19.

South end:

  • East Marginal Way South will close between South Atlantic and South Hanford streets from 7 p.m. Wednesday, July 11 to 5 a.m., Thursday, July 12; and from 8 p.m. Friday, July 13 to 5 a.m. Saturday, July 14. At the same time, Atlantic Street will be closed from Colorado Avenue to East Marginal Way South.

Quick links:

Website links

Alaskan Way Viaduct Replacement Program

SR 99 Tunnel Project | South Holgate Street to South King Street Project