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SR 99 in Seattle to close for four days in late August for viaduct project
There are only three weeks until the longest closure of State Route 99 since crews demolished half of the Alaskan Way Viaduct in fall 2011, according to a Washington State Department of Transportation press release.
Both directions of SR 99 will close between South Spokane Street and Valley Street from 10 p.m. Friday, Aug. 22, to 5 a.m. Monday, Aug. 25. The section of SR 99 between Spokane Street and the south end of the Battery Street Tunnel will reopen just before the Monday morning commute, but the highway will remain closed through the tunnel to Valley Street until 5 a.m. Wednesday, Aug. 25.
During the closure, contractor crews working for WSDOT will demolish and replace the section of SR 99 that crosses above Broad Street. This new section of the highway will become part of the permanent connection between the SR 99 tunnel’s north portal and Aurora Avenue North.
Also during the closure, crews will reroute water and sewer lines from underneath SR 99 near Harrison Street, replace 81 damaged or cracked pieces of concrete road panels that make up the SR 99 lanes between South Spokane and South Holgate streets, repair an expansion joint at the northbound SR 99 exit to Seneca Street, and remove ivy from the viaduct.
- At 10 p.m. Friday, Aug. 22, crews will close both directions of SR 99 between South Spokane Street and Valley Street. Northbound SR 99 will be open from South Royal Brougham Way until midnight Friday, Aug. 22 for exiting Seahawks traffic.
- At 5 a.m. Monday, Aug. 25, crews will reopen both directions of SR 99 south of the Battery Street Tunnel. Both directions of SR 99 will remain closed between the south end of the Battery Street Tunnel and Valley Street.
- At 5 a.m. Wednesday, Aug. 27, crews will reopen both directions of SR 99 between the south end of the Battery Street Tunnel and Valley Street.