The Seattle Department of Transportation (SDOT) will be closing down the I-5 on and off ramps at Mercer Street this weekend, the final construction closure at this site scheduled for May, an area in the midst of ongoing construction work needed as part of the Mercer Corridor Project.
The closure will begin at 11 p.m. tonight, Friday, May 20, and continue through 5 a.m. on Monday, May 23. After this weekend the Mercer Street on and off ramps will not be closed again until the weekend of Friday, June 17 to Monday, June 20 (also from 11 p.m. until 5 a.m. on those days respectively). From SDOT:
During these upcoming closures, please note that Mercer Street will be fully closed to through traffic between Westlake Avenue N and Fairview Avenue N, including access from Mercer Street to southbound Fairview Avenue N that had been maintained during previous closures. The I-5 on-ramp at University Street will be concurrently closed to provide more efficient traffic flow around the closed Mercer Street exit lane. Fairview Avenue N will also be closed between Mercer Street and Valley Street.
Updated detour route maps are available SDOT’s project website. Signs indicating detour routes will also be visible around the closure. SDOT advises commuters to be prepared for heavy congestion along these detour routes, particularly on east- and westbound Denny Way, and to use alternate routes when available.