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Washington State Department of Transportation
Northwest Region – 15700 Dayton Avenue – Shoreline, WA 98133 – 206-440-4000
TRAVEL ADVISORY
June 16, 2026
Contact: David Rasbach, communications, 206-719-0603
Northbound I-5 shifts onto a bypass road starting Wednesday night, June 17, south of Bellingham
BELLINGHAM – Both lanes of northbound Interstate 5 will shift onto a temporary two-lane bypass road beginning Wednesday night, June 17, near Chuckanut Creek (milepost 247) south of Bellingham. Northbound traffic is expected to continue using the bypass road until September.
During the traffic shift, contractor crews working for the Washington State Department of Transportation will install a new fish-passable structure beneath the northbound lanes. This work is part of a project correcting 17 barriers to fish migration along I-5 near Lake Samish.
Southbound I-5 made a similar shift to a temporary bypass road Monday night, June 15.
What to expect
Beginning at 8 p.m. Wednesday, June 17, both northbound I-5 lanes will shift onto a temporary two-lane bypass near the existing lanes. People traveling through the area Wednesday night should expect lane reductions and rolling slowdowns until the shift is complete at 5 a.m. Thursday, June 18.
An advisory speed limit of 50 mph will be set through the work zone while the bypass road is in use. With traffic off northbound I-5, crews will build a new permanent bridge for northbound I-5 lanes over Chuckanut Creek.
People can find more project information about the I-5 Tributaries to Friday, Lake and Chuckanut Creeks Fish passage project by visiting an online open house.
Real-time travel information is available via the WSDOT mobile app, the WSDOT travel map or by signing up for WSDOT's email updates.
Hyperlinks within the release:
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WSDOT keeps people, businesses and the economy moving by operating and improving the state's transportation systems. To learn more about what we're doing, go to www.wsdot.wa.gov/news for pictures, videos, news and blogs. Real time traffic information is available at wsdot.com/traffic.
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