By: Julie Moon
A new year brings continued progress towards a new look to the I-405 interchange at Northeast 85th Street. Crews are working on the I-405/Northeast 85th Street and Inline BRT Station Project. From January 10 through January 13, they will finish setting 16 bridge girders for the new northbound I-405 bridge. Bridge girders are concrete beams that support the driving surface. They are the main structural component of a bridge. Crews will also conduct drainage work on the right shoulder of northbound I-405.
This complex work requires the weekend closure of Northeast 85th Street, just as we did last November. This closure is essential for ensuring the safety of both workers and the public.
January full closure details
Northeast 85th Street will close in both directions beginning at 11 p.m. Friday, January 10 to 4 a.m. Monday, January 13. The closure is between Kirkland Way/114th Avenue Northeast and 120th Avenue Northeast. The I-405 on- and off-ramps from Northeast 85th Street will also be closed during this time. Crews will begin to reduce lanes and close ramps as early as 9 p.m. on Friday night.
Signed detours will be in place for drivers and detour maps can be viewed by clicking on the links below:
Northeast 85th Street vehicle detour routes. The linked image shows a map of the detour route for Northeast 85th Street Closure:
- Eastbound: Use Sixth St SE, NE 68th Pl, and 120th Ave NE.
- Westbound: Use 120th Ave NE, NE 68th Pl, and Sixth St SE.
Northeast 85th Street pedestrian and cyclist detour routes. The linked image shows a map of the pedestrian and cyclist route during the Northeast 85th Street closure:
- Eastbound:
- Use crosswalk at Kirkland Way/114th Ave NE.
- Turn right, go south on the pedestrian path.
- Keep left to continue on 116th Ave NE.
- Left onto pedestrian bridge.
- Left onto NE 80th Street.
- Left onto 120th Ave NE.
- Westbound:
- Left onto 120th Ave NE.
- Right onto NE 80th Street.
- Right onto pedestrian bridge.
- Right onto 116th Ave NE.
- Keep right on the pedestrian path.
- Use the crosswalk at Kirkland Way/114th Ave NE if needed.
Northeast 85th Street to northbound I-405 on-ramp closure detour routes. The linked image shows a map of the detour route for the northbound I-405 on-ramp closure:
- Eastbound: Use Central Way, Sixth Street South, then on-ramp at 116th Avenue Northeast.
- Westbound: Use 124th Avenue Northeast, then on-ramp at Northeast 124th Street.
Northbound I-405 off-ramp to Northeast 85th Street closure detour routes. The linked image shows the detour route:
- Use Exit 20A to 124th Ave NE, then return to NE 85th St.
Northeast 85th Street to southbound I-405 on-ramp closure detour routes. The linked image shows the detour route:
- Eastbound: Take Sixth Street Southeast, then Northeast 68th Place, using the on-ramp at Northeast 70th Street.
- Westbound: Take 120th Avenue Northeast and use the on-ramp at Northeast 70th Street.
Southbound I-405 off-ramp to Northeast 85th Street closure detour routes. The linked image shows the detour route:
- Eastbound: Take southbound I-405, Exit 17 at Northeast 70th Street, then 120th Avenue Northeast to Northeast 85th Street.
- Westbound: Take southbound I-405, Exit 17 at Northeast 68th Place, then Sixth Street Southeast to Central Way.
Full closure of Northeast 85th Street and I-405 on- and off-ramps. |
Expect more congestion and plan for extra travel time during the closure. Use alternate routes and travel during off-peak hours if possible. The schedule is subject to change due to the nature of construction. We will post updates on the project webpage.
Please drive carefully through the construction work zone. Be sure your full attention is dedicated to maintaining safety for everyone on the road.
Successful southbound bridge girder setting in November
Back in November, crews installed big concrete girders for the new southbound freeway bridge. To get it done, we had to close Northeast 87th Street for the whole weekend. It was a success, but drivers saw some extra congestion—and you can expect something similar during the upcoming closure.
Each girder was up to 156 feet long, stretching across the whole street, which is why a full closure is needed. Setting these huge bridge girders takes a lot of skill, planning, and space to make sure everything is done safely.
Crews setting bridge girders on 85th Street on Nov.16, 2024. |
What’s all this construction for?
This project is all about building a new station for Sound Transit’s new Stride bus rapid transit. This project makes it easier and safer for people walking or biking across I-405. It also adds a direct connection for transit and ETL users. A big part of making this happen is the new bridges and the three-level interchange at Northeast 85th Street. These bridges will create space for the middle level of the interchange, which will be a busy hub for transit riders, carpoolers, cyclists, pedestrians, and ETL users.
The project will replace the existing two-level interchange at Northeast 85th Street with a three-level interchange. |
Join us at our next quarterly project update webinar
At the meeting, there will be an opportunity to learn more about the upcoming construction work, ask questions, and find out how to stay informed. The project team will hold this meeting via Zoom from 12 to 1:30 p.m. on Tuesday, February 4.
Not able to make it? We will post a recording to the project webpage within one week after the meeting. Please feel free to register for the meeting even if you can’t attend, and we will email you the recording when it’s available.
We strive to host inclusive, accessible meetings that enable all people to engage and participate fully. To request meeting accommodations, or for questions about accessibility, please call us at (425) 224-2423 or email us at I405SR167Program@wsdot.wa.gov by Monday, Jan 27.
Check out the WSDOT real-time travel map for up-to-date information. If you have any questions and/or you would like to sign up for project updates, please email I405SR167Program@wsdot.wa.gov. Stay informed by subscribing to WSDOT updates for King County.