The Washington State Patrol (WSP) will conduct a two-day operation to ensure that commercial vehicle drivers are carrying the required tire chains.
On November 3 and 4, 2026, the WSP will conduct chain enforcement emphasis on I-90/Snoqualmie Pass to ensure that drivers “carry the appropriate amount of snow traction devices … during the winter months.”
During the two-day effort, troopers will “educate and enforce” Washington State’s chain carry requirements for commercial motor vehicle (CMV) drivers.
“Our main goal is to educate and gain compliance with CMV drivers to carry chains from November 1st to April 1st “, said Trooper Jeremy Weber.
From November 1 through April 1, vehicles over 10,000 pounds gross vehicle weight (GVW) must carry tire chains at all times, regardless of road conditions or advisories, on the following routes located in Washington:
- I-90 between North Bend (mile marker 32) and Ellensburg (mile marker 101)
- I-82 between Ellensburg Exit 3 (mile marker 3.00) and Selah Exit 26 (mile marker 26.00)
- SR-97 between (mile marker 145) and Junction
- SR-2 between Dryden (mile marker 108) and Index (mile marker 36)
- SR-12 between Packwood (mile marker 135) and Naches (mile marker 187)
- SR-97 between junction SR-14 (mile marker 4) Columbia River and Toppenish (mile marker 59)
- SR-410 from Enumclaw to Naches
- SR-20 between Tonasket (mile marker 262) and Kettle Falls (mile marker 342)
- SR-155 between Omak (mile marker 79) and Nespelem (mile marker 45)
- SR-970 between (mile marker 0) and (mile marker 10)
- SR-14 (mile marker 18) to Junction 97 (mile marker 102)
- SR-542 Mt Baker Highway between (mile marker 22.91) and (mile marker 57.26)
Learn more about Washington’s chain requirements for large vehicles here.
