There’s a lot of construction work planned for the Redmond area in the next few years. One of these projects is King County’s Lake Hills/NW Lake Sammamish Sewer Upgrade. King County needs to upgrade a regional sewer pipe that is undersized and aging.

The sewer route for the Lake Hills/NW Lake Sammamish Sewer Upgrade Project.
This 4.5-mile-long sewer pipe is located underground in trails, roads, parks, and private property. We know this project is going to be disruptive to the Redmond community. Construction will take about three years to complete. Construction is never easy, but our goal is to make sure that when we start our work in 2021, you know what to expect ahead of time.
We’re hosting two open houses and an online open house this month to share the latest:
- Tuesday, October 22, 5:30 – 7:30 p.m.
Audubon Elementary School auditorium
3045 180th Ave. N.E., Redmond
- Thursday, October 24, 5:30 – 7:30 p.m.
Redmond Community Center at Marymoor Village
6505 176th Ave. N.E., Redmond
Can’t make it in person? Join us online!
- Starting October 21, we’ll have the open house materials available online at our webpage: www.kingcounty.gov/KCredmondsewer
Stop by to learn more about construction and how we will restore natural areas, trails, roads, and sidewalks once our work is complete in 2024. We’ll also have an update on how we’ve been working to incorporate the things that are most important to your community. Whether it’s maintaining park access during construction or widening sections of the Sammamish River Trail when we’re done, our team has been working hard to incorporate them into our design where we can.

A rendering of trail restoration looking north toward NE 85th Street near The Stroll Park.
People of all abilities are welcome at these events. Please let us know how we can welcome you by contacting Kelly.foleykruse@kingcounty.gov or 206-477-8621.
We hope you can join us!