Project updates
Learn about where and when construction is happening throughout the ST district.
East Link Extension Mercer Island Station

Upcoming I-90 ramp closures

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Progress continues on the steel installation for the 77th Avenue head house. In the coming weeks, crews will continue to install steel supports, storm drains and will begin backfilling portions of the work area. To do so, both the east- and westbound Island Crest Way HOV ramps are planned to close daily during off-peak hours, 9 a.m. to 3 p.m., through June 22. Drivers can use the West Mercer Way and 76th Avenue Southeast westbound on-ramps and the West Mercer Way and 77th Avenue eastbound off-ramps during these closures.

Closures are planned to occur daily but may happen sporadically. Drivers should pay attention to signage and overhead reader boards for more information.

Island Crest Way ramp closures.

80th Avenue westbound HOV ramp closure

The 80th Avenue westbound HOV off-ramp is planned to be closed Wednesday, June 13, Thursday, June 14, Tuesday, June 19 and Wednesday, June 20, from 10 a.m. until 2 p.m. Crews will use this time to upgrade the communication fiber for WSDOT's Intelligent Transportation System (ITS). Sound Transit Express and King County Metro buses will be rerouted and will continue to serve the Mercer Island Park-and-Ride.

Mercer Island westbound HOV ramp closure.