SNOQUALMIE PASS, WASHINGTON — The Washington State Patrol will conduct a two-day chain enforcement emphasis on I-90 at Snoqualmie Pass on November 3 and 4, 2026, to make sure commercial vehicle drivers are carrying the required tire chains.
Troopers will “educate and enforce” the state’s chain carry requirements for commercial motor vehicle drivers, making sure they carry the appropriate amount of snow traction devices during the winter months.
“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.
WSP said it will post the results on social media once the emphasis is complete.
Must-Carry Chain Rules
From November 1 through April 1, vehicles over 10,000 pounds gross vehicle weight must carry tire chains at all times, regardless of road conditions or advisories, on these Washington routes:
- I-90 between North Bend (mile marker 32) and Ellensburg (mile marker 101)
- I-82 between Ellensburg Exit 3 and Selah Exit 26
- 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 the SR-14 junction (mile marker 4) at the 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 the SR-97 junction (mile marker 102)
- SR-542 Mt. Baker Highway between mile marker 22.91 and mile marker 57.26
Questions about the emphasis can be directed to WSP Public Information Officer Trooper Jeremy Weber.
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