• 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This project removes and replaces several outdated culverts under US 101 and State Route 116 at Lees, Ennis, Tumwater and Chimacum Creeks beginning in spring 2023. These sites have been identified by Washington State Department of Fish and Wildlife as barriers to salmon migration and other resident fish species.

WSDOT will replace the outdated culverts with new structures for improved fish migration in the streams below as part of a statewide fish barrier correction program.

Spring 2023 - Winter 2026
Project status
Not started
$65-85 million
Project hotline

What to expect

Travelers will see reduced speed limits and shifted lanes throughout construction, and alternating one-way traffic when needed, depending on location. Work will take place around-the-clock with most construction occurring at night when traffic volumes are less. Some detours will be in place.

Lees and Ennis Creek (mileposts 250-250.5), will have up to four, two-week periods where US 101 will be reduced to one lane in both directions for bridge girder delivery and installation. 

US 101 at Tumwater Creek (milepost 246.4) near the Tumwater Truck Route will close up to 9 months to replace outdated culverts under the highway.  

SR 116 at Chimacum Creek (milepost 0.22) will close up to 4 months to replace outdates culverts under the highway.

Dates will be shared for all locations once a design builder is chosen and schedules are finalized. 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 US 101 and SR 116 at Lees, Ennis, Tumwater and Chimacum Creeks beginning in spring 2023.