Coal Creek sewer upgrade

Project update

November 2025

Early morning closure of Coal Creek Parkway SE on Nov. 19 and 20

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.

What to expect:

• 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.
• 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: Lane closure areas shown on the map are approximate.

Ongoing daytime single lane closures

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.

Reminder: do not enter construction zones

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.

Interested in a project briefing for your community group?

We are available to meet with you or come to your next community event. The project team will share the latest project information and talk about what will happen over the next several years of construction. Please contact Frances Kuo 206-492-6499 or CoalCreekProject@kingcounty.gov.

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