California Department of Transportation
 

Current State Route 18 Conditions

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

 
SR 18 
    [IN THE SOUTHERN CALIFORNIA AREA]
    CHAINS ARE REQUIRED ON ALL VEHICLES EXCEPT 4-WHEEL-DRIVE VEHICLES WITH SNOW
TIRES ON ALL 4 WHEELS FROM THE JCT OF SR 189 TO SUMMIT BLVD (SAN BERNARDINO 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.