Traffic Highlights

Traffic Highlights

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.


  • Construction highlights for Friday, July 25 - Friday, August 1

    SR 99 corridor

    Saturday, July 26

    • The Seafair Torchlight Run will close all lanes of northbound SR 99 between South Spokane Street and the north end of the Battery Street Tunnel from 5:30 p.m. to 7:45 p.m.
    • The Seafair Torchlight Run will close the southbound SR 99 off-ramp to Western Avenue from 6 p.m. to 8 p.m.

    Tuesday, July 29

    • Crews will close the southbound SR 99 off-ramp to South Atlantic Street from 7 p.m. to 5 a.m.

    Tuesday, July 29 – Wednesday, July 30

    • Crews will close the left lane of southbound SR 99 between South Royal Brougham Way and South Atlantic Street from 7 p.m. to 5 a.m. each night.

    Advance notice for Friday, Aug. 22 – Wednesday, Aug. 27

    • Crews will close both directions of SR 99 between South Spokane Street and Valley Street from 10 p.m. Friday, Aug. 22 to 5 a.m. Monday, Aug. 25. Northbound SR 99 will be open from South Royal Brougham Way until midnight Friday for exiting Seahawks game traffic.

    • Both directions of SR 99 will remain closed between the south end of the Battery Street Tunnel and Valley Street from 5 a.m. Monday to 5 a.m. Wednesday.   

    Regional closures

    Sunday, July 27

    • Crews will close the eastbound SR 520 off-ramp to 84th Avenue Northeast from 12:01 a.m. to 8 a.m. 

    Sunday, July 27 – Monday, July 28

    • Crews will close an eastbound lane on SR 520 between the eastern shore of Lake Washington and 108th Avenue Northeast from 12:01 a.m. Sunday to 5 a.m. Monday.

    • Crews will close the 92nd Avenue Northeast on-ramp to eastbound SR 520 from 12:01 Sunday to 5 a.m. Monday.

    • Crews will close the eastbound SR 520 off-ramp to 84th Avenue Northeast from 11 p.m. Sunday to 5 a.m. Monday.  

    Thursday, July 31

    • The Seafair Air Show will close I-90 between Rainier Avenue South and West Mercer Way from 9:45 a.m. to 11:59 a.m. and from 1:15 p.m. to 2:40 p.m.

    Friday, Aug. 1 - Sunday, Aug. 3

    • The Seafair Air Show will close I-90 between Rainier Avenue South and West Mercer Way from I-90 will be closed between Rainier Avenue South and West Mercer Way from 1:15 p.m. to 2:40 p.m. each day.

    Central

    Saturday, July 26

    • The Seafair Torchlight Run will close Fourth Avenue between Denny Way and Seneca Street from 6:30 p.m. to 9 p.m.

    • The Seafair Torchlight Parade will close Fourth Avenue between Denny Way and South Washington Street from 7:30 p.m. to 11 p.m.

    North

    Monday, July 28 – Friday, Aug. 1

    • Mercer Corridor Project crews will close the eastbound right lane of Mercer Street between Fourth Avenue North and SR 99 from 9 a.m. to 2 p.m. each day.

    • Mercer Corridor Project crews will close the westbound right lane of Mercer Street between SR 99 and Fifth Avenue North from 9 a.m. to 2 p.m. each day. 

    — more —

Current Conditions




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