Washington State Department of Transportation (WSDOT) crews will be starting a large Interstate 90 project which will have congestion impacts, especially during peak travel time.
Beginning Sunday night, Sept. 11, WSDOT will reduce a three-lane section of westbound I-90 just east of Issaquah to one lane for four consecutive days and five nights. Around-the-clock work will begin at 9 p.m. Sunday, Sept. 11, and continue through 5 a.m. Friday, Sept. 16, while they replace the concrete panels on the left side of I-90. The lane reduction provides a safe work area for the people repairing I-90.
The following week, from 9 p.m. Sunday, Sept. 18 to 5 a.m. Thursday, Sept. 22, they'll reduce westbound I-90 to one lane again as crews replace pavement on the right side.
This work is necessary because the nearly 45-year-old concrete is cracked to the point where repaving is not an option. This section of I-90 is located near an old coal mine that was sealed up before the freeway was built. Through the years, water collected in the mine and began seeping under the westbound I-90 lanes. This softened the soil, which eventually led the concrete panels to crack. In addition to the paving work, this project includes drainage improvements to reduce the amount of water that goes under I-90.
Learn more about the project as well other local WSDOT projects.
Repaving the Highlands Drive on-ramp
It's part of a separate project, but WSDOT expects to complete the repairs of the Highlands Drive Northeast on-ramp to westbound I-90 within the next few weeks as well.