This project improves habitat and passage for fish in Purdy Creek under SR 302 and SR 16.
Purdy Creek attempts to flow under SR 16 inside 40-year-old culverts. Unfortunately, the fish cannot navigate the old culverts. This project will remove and replace the old culverts with large bridge structures. The new bridge structures are 206-foot long. The Washington Department of Fish and Wildlife (WDFW) estimates this work will create approximately 5.6 miles of new habitat for juvenile Chinook, Coho, Chum, and adult and juvenile Steelhead, coastal cutthroat and sculpin.
Purdy Creek also runs under SR 302, through an old culvert before it enters the tidal flats of the Burley Lagoon. The culvert is challenging for fish to navigate. WSDOT will remove and replace the old culvert with a 77-foot-long bridge structure. WDFW estimates a total of 6.5 miles of habitat will be created for the same species of fish listed above.
This work will help preserve the integrity of the highways and reduce maintenance costs by reducing or eliminating the possibility of culvert blockages.
What to expect
Weather permitting, as early as Sunday, Oct. 9, construction crews will move two westbound lanes of SR 16 towards the median. The speed limit will be reduced to 45 mph from the current 60 mph between milepost 17.15 and milepost 18. The work zone and reduced speed limit will be in place for up to a year.
Travelers will see overnight single-lane closures in the work zone. Lane closures on westbound SR 16 are allowed weeknights from 10 p.m. to 6 a.m. Lane closures on eastbound SR 16 are allowed weeknights from 9 p.m. to 6 a.m.
The long-term detour for SR 302 Spur/Purdy Drive using Purdy Lane Northwest from 144th Street Northwest to the SR 302 Spur has been delayed to 2023. Setting up the detour includes paving Purdy Lane Northwest and installing a temporary signal at the intersection of 144th Street Northwest and Purdy Lane Northwest. The detour will be in place for a year while crews remove an old culvert under SR 302 Spur.