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Full weekend closure of SR 99 scheduled for October 4-7

SR 99 full weekend closure: Friday, October 4 through Monday, October 7

Beginning tomorrow evening through Monday morning, Mercer Corridor Project crews will begin work on SR 99 including the installation of an underground water line and stormwater improvements. SR 99 will be fully closed to traffic beginning tomorrow, Friday, October 4 at 11:00 p.m. to Monday, October 7 at 5:00 a.m. During the closure:      

·         SR 99 will be fully closed to traffic between Valley St. and the southern end of the Battery Street Tunnel. Traffic traveling through Seattle via SR 99 will be directed to I-5 in northern Seattle at 85th St. or in southern Seattle at E Marginal Way and Spokane St. More information about alternate routes during construction may be found at: http://www.seattle.gov/transportation/mercercorridor.htm.

·         Mercer St., Broad St., and the I-5 on- and off-ramps at Mercer St. will remain open during the weekend work.

·         Pedestrian access will be maintained on the south side of Mercer St. between 5th Ave. N and Dexter Ave. N or via Broad St.


Early warning signs will be available in advance of the SR 99 lane restrictions. Travelers can expect significant traffic and delays and should plan ahead and use alternate routes.


Please note: The Washington State Department of Transportation will be holding their semi-annual inspection of the Alaskan Way Viaduct on October 5th and 6th and associated closures of SR 99 between South Spokane St. and the Battery Street Tunnel will also be in effect. For more information about these closures, please visit the Washington State Department of Transportation’s Alaskan Way Viaduct Replacement Project website at: http://www.wsdot.wa.gov/Projects/Viaduct/Traffic

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