Seattle Hill Road
Ground Breaking Event
Join Snohomish County Public Works to celebrate kicking off construction on
Seattle Hill Road. The project includes adding a center turn lane, bike lanes, curbs,
sidewalks, drainage improvements and re-aligning the road for improved line of sight. Speakers include Public Works Director Steve Thomsen, Executive Director Ken Klein
and Councilmember Terry Ryan.
When: April 20, 2017 from 1:00 p.m. to 2:30 p.m.
Where: Triway Grange Hall, 3509 Seattle Hill Road,
Mill Creek, WA 98012
What: Seattle Hill Road Ground Breaking Event
March 2017 UpdateConstruction is scheduled to begin on April 10, 2017. Intermittent single-lane closures and lane shifts will be required for this project. See below for more details on traffic impacts.
Snohomish County plans to improve Seattle Hill Road between 132nd Street SE and 35th Avenue SE.
Project details include:
- Widen the road to three lanes including a center turn lane
- Add bike lanes, curbs and sidewalks
- Vicinity Map
- Roadway Cross Section
- Bioretention Cross Section
- Project Map - North Section
- Project Map - South Section
- Aerial Photo - Seattle Hill Road: 35th Ave to 142nd Street SE
- Aerial Photo - Seattle Hill Road: 142nd St SE to 132nd St SE
- 2017 – Roadway construction will begin April 10, 2017 at the south end of the project. The work is scheduled to continue through the summer of 2018.
- 2016 to 2017 – Puget Sound Energy (PSE), Silver Lake Water District, BP, and Snohomish PUD scheduled to move necessary utilities to accommodate widening of the road.
- 2013 – Environmental review
- February 28, 2013 – Public open house at Mill Creek Elementary
- Intermittent single-lane closures will occur throughout construction with flaggers directing traffic.
- Commuters traveling through the area should expect delays of up to 20 minutes.
- Two 3-day full-road closures will be required in the summer.
- One additional week-long full-road closure will also occur.
- Detour signs will be used to notify corridor users when the closures will be in affect and the detour routes.
Such funding speaks to the significance the project will have on the improvement of vehicular and pedestrian safety and congestion in the area.
An environmental review of this project was completed in compliance with the State Environmental Policy Act (SEPA). The SEPA documents can be reviewed below. The comment period for this project closed on April 7, 2013. If you have questions please contact Mary Auld at 425-262-2460, via email, or by mail: Mary Auld, Snohomish County Public Works, 3000 Rockefeller M/S 607, Everett, WA 98201
- Environmental Checklist and Determination of Nonsignificance (DNS)
- Postcard Notice of Land Disturbing Activity (Formerly Grading Permit) and SEPA DNS
The process for developing road projects take several years; many factors must be considered. These factors include:
- Accident history
- Critical area regulations (CAR)
- Design standards
- Information that residents provide about the area
- Location of homes and public right-of-way
- Location of utilities
- Sight distance
- Soil compaction
- Traffic volumes
- Wetlands, stormwater runoff, drainage, and water quality