Driver alert: SR 99 closures continue through Wednesday morning, Aug. 27

Posted on Aug 25 2014 5:00 PM

Know before you go

Find current traffic information on WSDOT's travel tools page or SDOT’s traveler's information page.

Closure information

  • From 10 p.m. Friday, Aug. 22 to 5 a.m. Monday, Aug. 25, SR 99 will be closed in both directions from the West Seattle Bridge to Valley Street.
  • From 5 a.m. Monday, Aug. 25 to 5 a.m. Wednesday, Aug. 27, SR 99 will be closed in both directions from the south end of the Battery Street tunnel to Valley Street.


Construction progress

To minimize the need for additional closures, several projects are taking advantage of the SR 99 closure to complete work.  

Broad Street bridge demolition: The bridge over Broad Street is now completely gone. Crews have been busy compacting fill material that will provide the foundation for the new SR 99 roadway.

Utility work at Harrison Street: Crews continue to make progress on the new sewer line under SR 99 at Harrison Street. Work is also underway to underground several electric lines. 

Traffic update

Travel times on northbound I-5 were about 15 minutes longer than normal heading into Seattle during the Monday morning commute. Southbound SR 99 at Valley Street and northbound SR 99 at Western Avenue saw backups in the morning as well.


The afternoon commute is starting early, with long back ups on southbound I-5 heading into Seattle. Traffic in South Lake Union along Dexter Avenue North and Mercer Street is stop and go. Seattle Police officers will help direct traffic and keep key intersections clear.


We are encouraging drivers to continue to plan ahead for their commutes, especially with the Mariners playing home games both Monday and Tuesday nights. Leave plenty of time to get to your destination, know before you go and use WSDOT's travel tools or visit SDOT’s travelers information page.


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