• Project

I-5 and SR 11 Padden Creek - Fish Passage

Project overview

WSDOT will construct this project through the design build process, removing two fish barriers, one under SR 11 at 30th Street, the other under Interstate 5, south of the SR11/Old Fairhaven Parkway on- and off-ramps and replacing them with fish passable structures. Additional improvements will be made for those who use sidewalks and cross walks at SR 11 and 30th Street.

Fall 2019 - Fall 2022
Project status
$31.3 Million

What to expect

Intermittent lane closures on I-5 at milepost 250 and at the 30th Street and SR 11 intersection are planned between May 10 and September 30, 2021. Closures along northbound and southbound I-5 will include both the northbound off-ramp and southbound on-ramp at milepost 250 between the hours of 8 p.m. to 5 a.m. Closures along SR 11, Old Fairhaven Parkway and 30th Street will include lane and shoulder closures between the hours of 10 p.m. to 5 a.m.

Nightwork began April 26, 2021 and is allowable Sunday nights through Thursday nights between 8 p.m. and 7 a.m. Noise mitigation is in effect and crews will use inspected and approved truck bed liners, secure truck tailgates to limit banging and use ambient back-up warning alarms when possible. 

Crews will replace the existing concrete box culvert with a 20 foot single span concrete box culvert allowing fish to pass.