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Overview
The station is located in the center of I-90 near the Mercer Island Park-and-Ride and Mercer Island Town Center. Riders can enter at either 77th Avenue Southeast or 80th Avenue Southeast. People walking or cycling can access the station from the nearby Mountains to Sound Greenway Trail.
Travel time: Mercer Island to Bellevue Downtown - 10 minutes
Open: Trending early 2026*
Mercer Island Traffic Improvements:
Sound Transit is working on traffic mitigation efforts around the Mercer Island Station. The improvements primarily consist of improved traffic signals, new curbs and sidewalks for better pedestrian access, better pavement, and markings at three intersections nearest the station.
• 76th Ave SE and N Mercer Way
• 77th Ave SE and N Mercer Way
• 80th Ave SE and SE 27th St
This work is expected to wrap up in the summer of 2025.
*In August 2023, the Sound Transit Board voted for a phased approach to opening the East Link Extension, beginning with now-open 2 Line service between South Bellevue and Redmond Technology stations, followed by the I-90 segment crossing Lake Washington and including Judkins Park and Mercer Island stations.
The station’s east entrance at 80th Avenue SE offers a close connection to the park-and-ride.
The station’s west entrance at 77th Avenue SE is a short walk to the Island’s retail core.
A trip to a Husky football game takes 20 minutes from here.
The platform lies between I-90 eastbound and westbound lanes.
Station art
PROJECT: Entrance Houses
ARTIST: Beliz Brother (Seattle, WA)
DESCRIPTION: Brother creates elegant sculptural objects inspired by natural forms, often in contrast to their architectural settings. At the west entrance, a bottle-brush-like cluster of oars suspended above the entrance staircase will serve as a reference to the island's boating culture. A second sculpture above the staircase at the east entrance will be a delicate, balancing form of simple shapes, suggesting the bobbing of a boat upon the water.