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November 2025
King County’s contractor is continuing to prepare work areas for active construction in Bellevue.
On Wednesday, Nov. 19 and Thursday, Nov. 20, the contractor will close Coal Creek Parkway SE in both directions, at the Red Cedar Trailhead entrance, intermittently between 4 a.m. and 6 a.m.
We encourage drivers to use alternate routes during this closure or be prepared for significant delays on Coal Creek Parkway SE during these hours.
This closure is required so the contractor can safely direct an oversized truck transporting materials and equipment into and out of the Red Cedar Trailhead work area. The lanes will reopen once the truck has entered or exited the trailhead.
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Traffic impacts: Expect traffic delays. Flaggers will be present to direct traffic. Drivers and cyclists will be directed to wait outside the road closure area while the contractor is directing the oversized truck to enter and exit the work area.
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Work hours: Permitted work hours for the Coal Creek Parkway SE road closure are 4 a.m. to 6 a.m., Wednesday, Nov. 19 and Thursday, Nov. 20.
 Note: Road closure area shown on the map is approximate.
The daytime northbound and southbound single lane closures on Coal Creek Parkway SE will remain in place as construction activities continue. We will provide timely updates on any changes to the expected traffic impacts.
- Permitted work hours for the southbound single-lane closure are 6 a.m. to 3 p.m., Monday to Friday.
- Permitted work hours for the northbound single-lane closure are 10:30 a.m. to 7:30 p.m., Monday to Friday.
 Note: Lane closure areas shown on the map are approximate.
The Red Cedar trailhead and other work areas are active construction zones and remain closed to all public use. Other trailheads in the area such as the Cinder Mine, Red Town, Coal Creek Family YMCA, and Forest Drive trailheads are available for trail users. Stay out of fenced areas and the creek bank for your safety and to protect the Coal Creek Natural Area and salmon habitat.
About this project
Construction for King County Wastewater Treatment Division's (WTD) Coal Creek Sewer Upgrade Project began this past June. This multi-year project will provide needed wastewater capacity for growing communities in Bellevue and Newcastle.
After the pipe work is completed, the contractor will restore the Coal Creek Natural Area, parking areas, and affected roadways to protect the creek, trails, and infrastructure. The rebuilt Red Cedar Trailhead will retain the same look-and-feel while enhancing accessibility for visitors of all abilities.
For more information
Visit the Coal Creek project website for the most up-to-date construction information:
Call or email: Frances Kuo at 206-492-6499 or CoalCreekProject@kingcounty.gov.
Note: This is the King County Coal Creek Sewer Upgrade Project hotline. If there is an emergency, please dial 911. This phone line is for incoming calls only. We will never call you by this number. If you receive a call claiming to be from this number, please be aware it may be a scam.
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