The Washington State Department of Transportation will close all lanes of Interstate 90 across Lake Washington several times from Thursday, August 2 through Sunday, August 5, to accommodate air show practices and performances by the U.S. Navy Blue Angels for this year’s Seafair festivities.

By closing I-90, WSDOT is complying with Federal Aviation Administration rules to create a safer environment for drivers and Blue Angels pilots by reducing distractions to both.

The closures include all mainline I-90 lanes between Interstate 5 in Seattle and Island Crest Way on Mercer Island, and the entire length of the I-90 Express Lanes. Also, the bridge will be closed to all pedestrians and bicyclists up to 30 minutes prior to posted closure times.

WSDOT reminds pedestrians that the on-ramps from East Mercer Way and West Mercer Way are currently construction zones. Pedestrians accessing viewing areas from these locations should use extreme caution and not enter areas protected by barricades or traffic barrels.

The exits from westbound I-90 to Island Crest Way and East Mercer Way on Mercer Island will remain open, although drivers should note that heavy congestion during these closures restricts access to the exits.

Drivers are reminded that the I-90 Express Lanes will close at 9:00am on Thursday, August 2. On August 3, 4 and 5 (Friday through Sunday) the express lanes will close at 10:45am. On all four days the lanes will reopen by 3:30pm. The following ramps can be expected to close 30 minutes prior to posted closures depending on congestion: East Mercer Way to West I-90, 76th Ave. SE to West I-90, West Mercer Way to West I-90, East I-90 to West Mercer Way, I-5 north and southbound to eastbound I-90, the Rainier Avenue ramps to eastbound I-90, Island Crest Way to westbound I-90.

Thursday, August 2:
First Closure: 9:45am – 12:00pm
Second Closure: 1:15pm – 2:30pm

Friday, August 3
12:45pm – 2:40pm (Blue Angels’ practice show)

Saturday, August 4
12:45pm – 2:40pm

Sunday, August 5
12:45pm – 2:40pm

Drivers who want to ensure they can cross the lake using I-90 should drive across Lake Washington at least one hour before the announced closure times. No stopping or parking is allowed on the floating bridges.


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