Welcome to your headquarters for viaduct-related traffic information. Major traffic changes are highlighted on this page. To your right 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.
Feb. 18 update: A planned closure of southbound SR 99 on Sunday, Feb. 19 has been canceled due to anticipated weather. The closure will be rescheduled for a later date. The original notice is below.Crews working for WSDOT will close a half-mile stretch of southbound State Route 99/Aurora Avenue North near South Lake Union this Sunday, Feb. 19.All southbound lanes of the highway between Valley Street and the south end of the Battery Street Tunnel will be closed from 8 a.m. to 5 p.m. Sunday; the northbound lanes will remain open.During the closure, crews will restripe and reopen a portion of Harrison Street that has been closed due to SR 99 tunnel construction. When Sunday’s work is complete, drivers will have access to and from SR 99/Aurora Avenue North at Harrison Street.This work is weather-dependent and could be rescheduled in the event of rain.Closure map— more —
Until Friday, March 3
- Thomas Street will be closed around-the-clock between SR 99/Aurora Avenue North and Sixth Avenue North.
Sunday, Feb. 19
Visit the City of Seattle page for details on Seattle DOT traffic closures.— more —
- All lanes of southbound SR 99/Aurora Avenue North will be closed between Valley Street and the north end of the Battery Street Tunnel from 8 a.m. to 5 p.m.