Project overview
This project will replace the existing 6-foot concrete box culvert with a new 20-foot-wide fish passage structure under State Route 20, located between Coal Creek Lane and Hoehn Road (milepost 70), east of Sedro-Woolley. This upgrade is part of WSDOT’s ongoing efforts to improve fish passage and support the recovery of local fish populations.
What to expect
Contractor crews working on behalf of WSDOT will complete several tasks to improve this vital roadway and ensure the passage is safe for both wildlife and drivers. The work includes:
- Installation of a larger, buried fish passage structure to facilitate the movement of fish.
- Grading and laying new pavement.
- Adding pavement markings and guardrails for improved safety.
- Implementing temporary erosion control measures to protect the environment.
- Planting and landscaping to restore the area once construction is complete.
- Traffic control measures to safely manage work zone conditions.
These improvements will help restore vital fish habitats while enhancing the safety and longevity of the highway. Thank you for your patience as we work to make these important environmental and infrastructure upgrades.
During construction, travelers should expect an automated traffic light to alternate traffic through a single lane through the project area; additionally, flaggers will alternate traffic from 7 a.m. to 7 p.m., daily, Monday through Friday. Traffic will shift for 15 days to a bypass road to support the install of the new, concrete culvert. Construction is scheduled to begin July 14.
