Road Information

Know before you go:  National Weather Service  -  Caltrans Social Media  -  QuickMap Real-time Travel Information

Check Current Highway Conditions

 
You can also call 1-800-427-7623 for current highway conditions. Mobile

This highway information is the latest reported as of Sunday, January 12th, 2025 at 11:49 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 1 mi west of the Jct of US 395 to Old Mammoth Rd (Mono Co)

Chains or snow tires are required from Forest Trail Rd to the Mammoth Mountain Main 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.