Project overview
This project removed multiple barriers to fish under two state highways. Crews worked on SR 108 near Kamilche and US 101 near the Thurston/Mason County line.
What to expect
This project was completed in December 2024.
Locations of SR 108 and US 101 work zones.
Need for this work
The work is an important part of the state's efforts to protect and restore fish runs.
WSDOT is under a 2013 federal court injunction. WSDOT is required to significantly increase efforts to remove barriers to fish. The work will increase the likelihood of fish migration. The improvements also help simulate a natural creek environment.
Work on seasonal streams
Some streams have seasonal flow so they may appear dry at times. But, they are still important to fish. Seasonal streams can sustain young coho. There are residual pools scattered through watersheds. This is where fish can wait out dry periods. Juvenile coho who use seasonal streams have a greater chance of survival. This may be due to reduced competition for food resources compared to year 'round streams.
Completed work
During 2023, crews removed barriers to fish at two locations on SR 108. Both are located near McCleary. During summer 2024, crews removed barriers to fish at three locations under SR 108 near Kamilche.
Get in-get out approach
Total closures shortened the overall construction timeline. It also helped minimize the environmental footprint.