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, March 27 to Friday, April 3


    Beginning 7 p.m. Friday, March 27 until 5 a.m. Monday, March 30

    • Seattle Public Utilities crews will close two northbound lanes and one southbound lane of SR 99 between Ward Street and Highland Drive from 7 p.m. Friday to 5 a.m. Monday. 
    • WSDOT and SDOT contractor crews will close SR 99 in both directions between the south end of the Battery Street Tunnel and Valley Street from 10 p.m. Friday until 5 a.m. Monday.
    • Crews will close the westbound mainline of I-90 between Bellevue Way and Seattle from 11 p.m. Friday until 5 a.m. Monday. Traffic will be detoured to the express lanes during this time.
    • The only westbound access to Mercer Island will be via East Mercer Way. There are no westbound exits to Mercer Island from the express lanes.
    • Drivers wishing to travel from Mercer Island to Seattle should enter the express lanes at 77th Avenue Southeast or Island Crest Way.
    • The following ramps will also be closed during this time:
    • The westbound I-90 exit ramp to northbound and southbound Rainier Avenue South.
    • The southbound I-405 HOV ramp to westbound I-90.

    Saturday, March 28

    • Crews will close the two left lanes in the southbound direction and two right lanes in the northbound direction on the Aurora Bridge from 6 a.m. to 6 p.m.

    Saturday, March 28 and Sunday, March 29

    • Crews will close SR 99 in both directions between South Spokane Street and the Battery Street Tunnel from 6 a.m. to 6 p.m. each day for a scheduled inspection of the Alaskan Way Viaduct.
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Current Conditions

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