• Project

US 101/SR 116 North Olympic Peninsula – Remove Fish Barriers

Project overview

This project removes and replaces several outdated culverts under US 101 and State Route 116 at Lees, Ennis, Tumwater and Chimacum Creeks. Washington State Department of Fish and Wildlife has identified these sites as barriers to salmon migration and other resident fish species.

WSDOT will replace outdated culverts with new structures for improved fish migration in the streams below as part of a statewide fish barrier correction program.

Fall 2024 - Winter 2027
Project status
$146 million

What to expect

Currently, our design builder is finalizing the design of the project. This will determine the length of closures needed at each construction site. More details will become available as design work progresses.

The locations for culvert replacement are:

  • US 101 at Lees Creek (milepost 250.5)
  • US 101 at Ennis Creek (milepost 250.2)
  • US 101 at Tumwater Creek (milepost 246.4)  
  • SR 116 at Chimacum Creek (milepost 0.22)

Lees, Ennis and Tumwater Creeks will begin in 2025. Work on Chimacum Creek will begin in the summer of 2025. WSDOT and the design-builder will coordinate with local agencies and emergency services to minimize delays and keep people moving through work zones.


Crews will correct barriers to salmon migration under SR 116 at Chimacum Creek beginning in Summer 2024. Work on US 101 at Lees, Ennis and Tumwater Creeks will begin in 2025.