Traffic Highlights
Traffic Highlights
Welcome to your headquarters for viaduct-related traffic information. Major traffic changes are highlighted on this page. To your left are links to a full list of closures, traffic cameras, and other resources to help you find your way. You can also sign up to receive weekly emails about upcoming detours and closures.
Lane reductions on SR 99 near the West Seattle Bridge for Spokane Street Overcrossing Project
Contractor crews for the Washington State Department of Transportation recently began work to bring down and replace an elevated section of State Route 99 just south of the West Seattle Bridge. The bridge was built as a temporary structure back in 1959 and needs to be replaced. When they finish, they’ll leave Seattle’s SODO neighborhood with a stronger concrete bridge better equipped to withstand the test of time.
In late February, crews shifted traffic to the west side of … more
Alaskan Way Viaduct Replacement construction closures: Monday, April 1 – Friday, April 5
SR 99 Corridor
North
Monday, April 1
Crews will close two right southbound lanes of SR 99 between Broad and Harrison streets from 9 p.m. to 5 a.m.
Crews will close two right northbound lanes of SR 99 between Republican and Broad streets from 9 p.m. to 6 a.m.
Central
Starting Monday, April 1
Crews will reduce Alaskan Way to one lane in each direction between Virginia and Pike streets from 7 a.m. to 5 p.m. on weekdays.
… more
Construction closures - March 22 through March 29
Regional Closures
Friday, March 22 to the morning of Monday, March 25
Crews will close the ramps from the West Seattle Bridge to northbound I-5 and Columbian Way from 10 p.m. Friday, March 22 until 5 a.m. Monday, March 26. The ramp from Sixth Avenue South to northbound I-5 and South Columbian Way also will be closed.
Friday, March 22 and Saturday, March 23
Crews will close three lanes of southbound I-5 from Northeast Ravenna Boulevard to East … more
