• Project

SR 202 Skunk Creek and SR 203 Unnamed Tributaries to Snoqualmie River - Fish Passage

A temporary detour on SR 202 near Southeast 46th Street will remain in place until August 2024. 

SR 202 near Southeast 46th Street will be reduced to one lane with flaggers alternating traffic from 9 a.m. to 3 p.m. daily on weekdays through May 2024. 

Project overview

As part of the state's fish recovery efforts, WSDOT has made it a priority to reconnect waterways where roads act as barriers. In Western Washington, that means replacing culverts and building hundreds of fish-passable structures under state highways by 2030 to create more habitat which is essential for meeting fish recovery goals.

Starting in mid-2023, WSDOT will build larger fish passages to restore natural stream conditions in Skunk Creek and an unnamed tributary to Skunk Creek where they cross under SR 202 and Southeast Fish Hatchery Road near Fall City. WSDOT will also build two more structures to carry an unnamed tributary to the Snoqualmie River and an unnamed tributary to Horseshoe Lake under SR 203 near Carnation.

Spring 2023 - Fall 2026
Project status
$10.3 million

What to expect

Replacing the culverts may take up to two years. This project is being combined into a single contract with two other fish passage projects on I-90 and SR 161. Construction is scheduled to occur from 2023-2026 in all locations.

SR 202 culverts at Skunk Creek and Southeast Fish Hatchery Road in Fall City:

  • Construction starts April 1. 2024, on the fish barrier removal project at Skunk Creek. 
  • Southeast Fish Hatchery Road will close to through-traffic between 361st Avenue Southeast and 356th Drive Southeast for up to six months. Local access will be permitted on either side of the closure. 
  • In mid- to late-April 2025, a temporary bypass will open on SR 202 that routes both lanes of traffic around the work zone. The speed limit will reduce to 40 mph through the area. 
  • Late this summer, likely in August, the new bridge on SR 202 will be finished and SR 202 will return to its normal configuration.
  • Around that same time, crews will begin building a bridge over Skunk Creek on Fish Hatchery Road. Work will continue into late 2024, at which time the road will reopen in its normal configuration. 

SR 203 culvert at 324th Way Northeast in Carnation:

  • Construction scheduled to start as early as June 3, 2024 and last into late 2024.
  • A section of 324th Way Northeast near the intersection with SR 203 will close for the duration of the project. 
  • Weekday SR 203 single-lane closures near 324th Way Northeast will last into late 2024. Flaggers will alternate traffic through the work zone.
  • During nights and weekends, both lanes of SR 203 will remain open with a temporary detour at 324th Way Northeast. The speed limit on SR 203 will reduce to 25 mph through the work zone. 
  • Bicycle and pedestrian traffic will detour around the work zone using Northeast 16th Street, the Snoqualmie Valley Trail and Northeast 24th Street. 
  • 324th Way Northeast will reopen in late 2024 with new intersection alignment to improve visibility for people turning onto SR 203.

SR 203 culvert at unnamed tributary to Horseshoe Lake:

  • Construction on the new culvert on SR 203 near Northeast Carnation Farm Road was completed in August 2023 during a 56-hour highway closure. No additional closures are planned in this area.

A map showing the locations on SR 202 and 203 near Fall City and Carnation where culverts that act as fish barriers will be removed and replaced with larger, fish-friendly structures.