San Diego Freeway I-405 Improvement Project

12 Documents in Project


SCH Number
Lead Agency
California Department of Transportation, District 12
Document Title
San Diego Freeway I-405 Improvement Project
Document Type
FIN - Final Document
Present Land Use
Document Description
NOTE: Final The I-405 Improvement Project proposes to widen the corridor by adding one general purpose lane and a tolled Express Lane in each direction to be managed with the existing carpool (HOV) lane as a tolled Express facility (Alt 3) between SR 73 and I-605. The proposed action would improve the freeway mainline and interchanges on I-405 in Orange and Los Angeles counties for approximately 16 miles between 0.2-mile south of Bristol Street and 1.4 miles north of I-605, as well as portions of SR 22, SR 73, and I-605 to reduce congestion and improve lane continuity through the corridor.

Contact Information

Smita Deshpande
Agency Name
California Department of Transportation, District 12
Contact Types
Lead/Public Agency


Costa Mesa, Fountain Valley, Huntington Beach, Seal Beach
Cross Streets
I-405 between SR-73 & I-605
Parcel #
State Highways
SR-22, SR-55
Union Pacific, US Navy
John Wayne
Many, including Westminister Channel, Santa Ana River

Notice of Completion

State Reviewing Agencies
Air Resources Board, Transportation Projects, California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Parks and Recreation, California Highway Patrol, California Native American Heritage Commission (NAHC), California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, San Diego Region 9 (RWQCB), California Regional Water Quality Control Board, Santa Ana Region 8 (RWQCB), California State Lands Commission (SLC), Caltrans, Division of Aeronautics, Department of Toxic Substances Control, Office of Historic Preservation, Resources Agency
Development Types
Transportation:Highway/Freeway (Highway Improvement)
Local Actions
Hwy Improvement

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613.

Download CSV New Search Print