California Department of Transportation
 

Current State Route 203 Conditions

Before driving, check with the Caltrans Highway Information Network (CHIN) 800.427.7623

 
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 MOUNTAIN INN (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.