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SR-203 CalTrans Chain Control Highway SR-203 | ca-17.com

NOTE: Be sure to double check chain control locations as some CalTrans descriptions may be outdated.

CalTrans Chain Control

For emergencies visit CalTrans.
For details on chain control requirement levels R-0 through R-3, see Chain Requirement Levels.
203
East
R-1

Mammoth Lakes in Mono County at 8802ft elevation in District 9

CHAIR 4 at milepost: 2.80
View on Google Maps
Chains are required on all vehicles except passenger vehicles and light-duty trucks under 6,000 pounds gross weight and equipped with snow tires on at least two drive wheels. Chains must be carried by vehicles using snow tires. All vehicles towing trailers must have chains on one drive axle. Trailers with brakes must have chains on at least one axle.
203
West
R-1

Mammoth Lakes in Mono County at 8103ft elevation in District 9

FOREST TRAIL RD. at milepost: 5.00
View on Google Maps
Chains are required on all vehicles except passenger vehicles and light-duty trucks under 6,000 pounds gross weight and equipped with snow tires on at least two drive wheels. Chains must be carried by vehicles using snow tires. All vehicles towing trailers must have chains on one drive axle. Trailers with brakes must have chains on at least one axle.