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WSDOT, Sound Transit, and design-build contractor Graham Contracting, Ltd. are working to reconstruct and improve the I-405/Northeast 85th Street interchange. This project design supports Sound Transit's Stride Bus Rapid Transit (BRT), improves transit connections on Northeast 85th Street, and provides direct access to the I-405 Express Toll Lanes (ETLs).
With the City of Kirkland’s support, WSDOT and Sound Transit chose Northeast 85th Street for this project because it is a main connection between Downtown Kirkland, Redmond, and I-405. Working together, WSDOT, the City of Kirkland, and Sound Transit developed this project to improve accessibility for transit riders along the I-405 corridor and throughout the region and improve mobility and people who walk, bike, or roll.
The current interchange has two levels: the bottom level for local traffic on Northeast 85th Street and the top level for freeway traffic on I-405.
Project improvements along the lower level include local road improvements along Northeast 85th Street and its intersection with 114th Avenue Northeast/Kirkland Way.
The newly constructed middle level of the interchange is a multimodal hub. The hub will improve access and save time for transit riders, carpoolers, ETL users, and people who walk, bike, or roll. Transit riders will benefit from a new BRT station in the median of the northbound and southbound lanes, with connections to local bus stops. Pedestrians and cyclists will have wider sidewalks and better connections to BRT and the regional transit network. Carpoolers and ETL users will have direct-access ramps to the ETL system on I-405.
The project will also include fish barrier corrections, noise walls, and new stormwater facilities.
Once finished, this project will offer safer, more reliable transportation options for Kirkland residents, neighbors, and commuters – no matter how they get around.
What to expect
For the most up-to-date information about travel impacts, check out our real-time travel map. We also encourage people to stay informed by subscribing to our email updates or calling our construction hotline with questions, concerns or for more information at 425-224-2423.
Work in the fall and winter of 2023 will generally include field surveys (potholing, geotechnical borings), vegetation and tree removal, and preparations for temporary signals we’re installing later this winter.
Travelers can expect to see traffic signage, orange traffic barrels, construction equipment and materials, and crews on and around I-405 and Northeast 85th Street. People traveling on I-405 may also see shoulder closures and nighttime closures of express toll lanes. Most work will occur on weekdays during daytime hours but will include nighttime and weekend work when necessary.
Upcoming I-405 ramp and lane closures
- The northbound I-405 on-ramp from westbound Northeast 85th Street will be closed nightly from 11 p.m. Monday, Dec. 4 to 5 a.m. Friday, Dec. 8.
The project will replace the existing two-level interchange at Northeast 85th Street with a three-level interchange and construct local improvements along Northeast 85th Street and its intersection with 114th Avenue Northeast/Kirkland Way.