Chain requirements for vehicles over 10,000 pounds

Tire chain requirements for vehicles over 10,000 pounds gross vehicle weight (GVW). WAC 204-24-050 (2) (f).

This Diagram of proper chain placement (PDF 20KB) shows where chains are required for different axle configuration. All vehicles weighing over 10,000 pounds must carry at least two extra tire chains. Extra chains are needed in case road conditions worsen, or the chains break or become unusable – regardless if chain up requirements are posted or not. You can see all requirements in WAC 204-24-050 (2)(f).

Chains must be two-sided, not plastic, and with sufficient hardened metal. At least one cross-chain must be in contact with the road surface at all times. The Washington State Patrol may approve other devices as chains, but the devices must be equivalent to regular chains in performance (cable chains allowable).

Dates

  • From November 1 to April 1: Chains must be carried at all times, regardless of road conditions or advisories.
  • From April 2 to October 31: Chains must be carried only when specifically posted for different axle configurations

Routes

  • I-90 between North Bend (MP 32) and Ellensburg (MP 101)
  • I-82 between Ellensburg Exit 3 (MP 3.00) and Selah Exit 26 (MP 26.00)
  • SR-97 between (MP 145) and Junction
  • SR-2 between Dryden (MP 108) and Index (MP 36)
  • SR-12 between Packwood (MP 135) and Naches (MP 187)
  • SR-97 between junction SR-14 (MP 4) Columbia River and Toppenish (MP 59)
  • SR-410 from Enumclaw to Naches
  • SR-20 between Tonasket (MP 262) and Kettle Falls (MP 342)
  • SR-155 between Omak (MP 79) and Nespelem (MP 45)
  • SR-970 between (MP 0) and (MP 10)
  • SR-14 (MP 18) to Junction 97 (MP 102)
  • SR-542 Mt Baker Highway between (MP 22.91) and (MP 57.26)

You don’t need chains for local deliveries if you stay outside the chain-required areas and don’t cross a mountain pass. WSDOT or WSP may stop vehicles without chains from going into areas where chains are required.

Oversize load movements

Movement by permit on mountain passes is prohibited where any of the following signs are displayed:

  • Traction Advisory/Oversized Vehicles Prohibited
  • Vehicles over 10,000 GVWR, Chains Required
  • Chains required on all vehicles except all-wheel drive

 

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Winter driving tips

Slow down on ice and snow.

It's easier to skid or lose control traveling at higher speeds. Give yourself more time to stop.

Carry chains, practice installing them.

Winter conditions could mean chains are required on your route. Practice putting them on your vehicle ahead of time.

Pack your winter car kit.

Carry extra supplies like warm clothing, ice scraper and brush, jumper cables and other emergency items.