Drivers in the Bellevue area should prepare for heavier traffic this weekend as a key stretch of northbound I-405 will be closed from 11 p.m. Friday, Oct. 16, until 4 a.m. Monday, Oct. 19. The closure affects the Southeast 8th Street on‑ramp and the Exit 13 A/B off‑ramp, which connect to Northeast 4th Street and Northeast 8th Street.
Detour routes
Signed detours will guide motorists to exit at 13, then travel north on 116th Avenue Northeast before turning left onto Northeast 4th Street to reach the open on‑ramp. An alternative route uses Southeast 8th Street: drivers can turn right onto the street, head east and south, then turn right onto 112th Avenue Southeast and again right onto Northeast 4th Street, which also leads to the open on‑ramp.
Project background
The closure is part of the I‑405/Renton to Bellevue Widening and Express Toll Lanes Project. Crews will pave the roadway, install concrete panels, and erect an overhead sign structure. The broader effort is designed to improve travel speeds, increase trip reliability, and support the new I‑405 Bus Rapid Transit (BRT) line that will run between Lynnwood and Tukwila.
Impact on nearby highways
In addition to the I‑405 work, northbound I‑5 and eastbound I‑90 will see lane reductions this weekend. Drivers are encouraged to plan alternate routes, allow extra travel time, and stay informed through the Washington State Department of Transportation (WSDOT) resources.
How to stay updated
Project updates will be posted on the official project webpage, the WSDOT Travel Center map, and the WSDOT mobile app. Residents can also sign up for King County email alerts to receive the latest information on schedule changes, which may occur if weather conditions are unfavorable.
What residents can do
Commuters should consider carpooling, using public transit, or adjusting travel times to avoid peak congestion. The new BRT line, once operational, will offer a reliable alternative for those traveling between the north‑Seattle suburbs and the South‑King region.
For detailed lane‑closure maps and real‑time traffic conditions, visit WSDOT’s update page.
Original reporting: Renton Reporter — read the source article.
