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Welcome to Caltrans District 12
Caltrans - District 12
Serving Orange County
3337 Michelson Drive Ste. CN-380
Irvine, CA 92612
949.724.2000 Location
About District 12 - The transportation system in California is one of the state’s greatest assets, unmatched in size,capacity, and convenience to the traveling public. The California Department of Transportation (Caltrans)is the public agency responsible for designing, building, operating and maintaining California’s state highway system, which consists of freeways, highways, expressways, toll roads and the area between the road and property line. More
District Director - Cindy Quon
New Items
- CONSTRUCTION ALERT - ORTEGA HIGHWAY - Nighttime Opening
- State Route 55 Project adds 5 1/2 miles of continuous access carpool lanes
Continuous access carpool lanes a reality on Route 55! Caltrans has restriped the carpool lanes on Route 55 to continuous rather than limited access.
Carpoolers can now move in and out of the carpool lane easily and lawfully and it was all done at no cost to the public. The new striping was made possible with the passage of AB2906 and immediate action by Caltrans (read more).




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