On Monday, July 9, WSDOT will begin construction to widen I-405 within the city of Bellevue between 112th Avenue SE (exit 9 near the park and ride) and SE 8th Street.
You may notice construction activity as crews shift lanes on I-405 to set up work zones and move in heavy construction equipment. Ramp alignments may also change to accommodate construction. All lanes on I-405 will remain open during the day with a few lanes closed at night.
The I-405 South Bellevue Widening Project will help relieve congestion at one of the worst I-405 bottlenecks by adding lanes and improving merging conditions through the drive in and out of downtown Bellevue.
The project is divided into two stages:
Stage 1: July 2007 - June 2008
Between 112th Ave SE and I-90
- Add a new northbound lane from 112th Ave SE to I-90
- Build a new, three-lane, southbound bridge over I-90
- Widen the existing northbound bridge over Coal Creek Parkway
Between I-90 and SE 8th
- Build one new lane in each direction from I-90 to SE 8th Street
- Remove the Wilburton Tunnel
- Convert the existing southbound bridge over I-90 to carry the northbound HOV lane
For more information visit the WSDOT I-405 Widening Project Website.
