Sub-Basin 29.3 and 34.1 Watercourse Stabilization

​​Project Status

To help keep area residents informed of our construction progress, we will post project updates to this site on a regular basis. Click here to see status updates.

Project Details/Neighborhood 

• SW0112 8200 Block of West Mercer Way, Project is along open watercourse from West Mercer Way to Lake Washington

  SW0114 6200 Block of West Mercer Way, Project is along open watercourse from SE 65^th Street to West Mercer Way

​Background

Stream banks have eroded over time, causing significant sedimentation downstream.

Description

SW0112 (Sub-Basin 34.1) – channel restoration and outfall protection. 
SW0114 (Sub-Basin 29.3) – stream restoration and bank stabilization with use of stream boulders, cobbles, and logs. 

Project Timeline

Planning/Preliminary Design 2024

Final Desing/Construction Timeframe 2025

Estimated Budget

SW0112 (Sub-Basin 34.1) - $25,000 for assessment and initial design in 2024 
SW0114 (Sub-Basin 29.3) - $50,000 for assessment and initial design in 2024

Contact

Elayne Grueber, P.E, Capital Project Manager: elayne.grueber@mercerisland.gov

www.mercerisland.gov/SW0112

www.mercerisland.gov/SW0114