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Road Information

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Check Current Highway Conditions
 
You can also call 1-800-427-7623 for current highway conditions.

This highway information is the latest reported as of Wednesday, April 22nd, 2026 at 10:17 AM.

SR 203

[IN THE CENTRAL CALIFORNIA AREA & SIERRA NEVADA]
Is closed from the Mammoth Mountain Inn (Mono Co) to the Mono/Madera Co Line - For the winter - Motorists are advised to use an alternate route

Chains or snow tires are required from Forest Trail Rd to Mammoth Mtn Lodge (Mono Co)

Please research chain control locations as Caltrans is currently working to update chain control descriptions for consistency with internet mapping, like Google Maps & Mapquest