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Caltrans District 12 Homepage 
Welcome to Caltrans District 12
Serving Orange County
Caltrans - District 12
3347 Michelson Drive, Suite 100
Irvine, CA 92612
(949) 724-2000 Location and Brochure with Site Map
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
PROJECTS AND Alerts.
- New Ramp Signals Installed Along Orange County Freeways!
- 55 Hour Weekend Closure Southbound I-605 / Northbound I-405 Connector Closure Friday, May 18 to Monday, May 21
- West County Connector Project Alerts (affecting I-405 / I-605 / SR-22).
- Interstate I-5 Pavement Restoration Project Underway From Dana Point to Mission Viejo.
- Interstate 5 roadway and bridge widening project in San Juan Capistrano has commenced.
- Safety Improvement Project in Dana Point at I-5 and Camino Las Ramblas / SR-1 underway.
- City of Anaheim "Gene Autry Way" HOV bridge project Including pile driving operations commences on June 23 2012
- SR-1 (Pacific Coast Highway), in and near Newport Beach, Rubberized Asphalt Overlay Project has started.
- Southbound State Route 55 Project to Widen Freeway and Bridge and Construct Retaining/Tieback Wall.
- NB State Route 55 to WB State Route 91 Connector, Lane and Onramp Closures Planned April 30th to May 9th 2012
- State Route 91 Widening Project commences construction August 22, 2011.
- SR-57 Northbound Widening Project Alerts (South Segment).
Environmental Reports / Project Details / Public Hearings
- WCC (SR-22, I-405, I-605) Final Environmental Impact Study
- I-5 High Occupancy Vehicle (HOV) Lane Extension Project
- SR-91 Initial Study with Mitigated Negative Declaration for the proposed Westbound State Route 91 Lane Extension and Auxiliary Lane Reconstruction Project.
- SR-73 - Initial Study with Mitigated Negative Declaration for the proposed Storm Water Basin Stability and Slope Stabilization.
- SR-1 - Initial Study for the proposed Bolsa Chica Roadway Embankment Reconstruction Project.
- Lower SR-74 Widening - Final EIR.
- Interstate 405 Improvement Project, SR-73 to I-605 proposed project details.
what's happening in District 12
- California Interregional Blueprint
- State Planning & Research Grant (SPR) to Develop Cost-Benefit Tool for Evaluating Park and Ride Lots
- $825 MILLION ALLOCATED TO CREATE JOBS AND IMPROVE TRANSPORTATION
- Caltrans Economic Recovery
- OC/LA Intercounty Transportation Study
- The Proposition 1B-Transportation Bond
- Strategic Growth Plan Overview and Caltrans Strategic Plan 2007-2012
- California Energy Updates