Lake Hills and NW Lake Sammamish sewer upgrade
July 27, 2022
Survey work at the intersection of Leary Way and West Lake Sammamish Parkway
Crews working for King County Wastewater Treatment Division are continuing field work to support final design of the Lake Hills and NW Lake Sammamish Sewer Upgrade project. Between July 27 and August 1, crews will be at the intersection of West Lake Sammamish Parkway and Leary Way using cameras and other handheld equipment to view existing underground utilities. This work is anticipated to last one day and then crews will return in mid-August to complete survey at the same location.
What to expect:
- Work hours 7:30 a.m. to 3:30 p.m., Monday through Friday
- Crews will use cameras and other handheld equipment to view existing utilities underground
- Survey crews will consist of two surveyors using hand carried survey equipment
- Traffic, pedestrian, and bicycle access will be maintained
- Crews will be wearing personal protective equipment in accordance with current guidance from national public health and worker safety officials
Construction is expected to begin in 2024. For the latest project information, check out the recording of the fall 2021 virtual neighborhood meeting.
Meeting materials and a meeting summary are also available on our public involvement page.
- Project Summer newsletter , August 2020
- Sammamish River Trail preliminary detour routes and restoration , April 2019
- Project Overview fact sheet (updated December 2018)
- Glossary of terms: King County Wastewater 101
- Meeting calendar for locations and meeting materials
- Project library for updates, fact sheets and environmental documents
- To sign up for project text alerts, text KING REDMONDSEWER to 468-311
The Lake Hills and NW Lake Sammamish sewer pipe has been serving Redmond and Bellevue for 50 years. The water you use travels down your drain to City sewer systems. The City’s pipes send wastewater to King County’s sewer system where it is carried to the Brightwater Treatment Facility in Woodinville for treatment.
King County is working on a project to upgrade 4.5 miles of this sewer pipe. King County will build the new pipe in trails, roads and parks in Redmond. This project is necessary to meet the needs of your growing community. Construction is expected to begin in 2024 and may impact your daily routine. When complete, the new pipe will provide sewer service for 50 years or more.