Upcoming I-90 ramp closures

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You may have noticed steel supports have been installed at the 77th Avenue Southeast head house and more steel will arrive and will provide the shape for the east head house at 80th Avenue Southeast. To safely do so, crews will continue to close both the east- and westbound Island Crest Way HOV on and off-ramps daily during off-peak hours through September.

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.

Map of I-90 ramp closures on Mercer Island in September.

No traffic closures during Labor Day weekend

There will be no ramp or lane closures during the Labor Day holiday, from 12 p.m. Friday, Aug. 31 until 12 p.m. Tuesday, Sept. 4. Planned closures of the East and Westbound HOV on- and off-ramps will resume on Tuesday, Sept. 4.