San Diego Freeway I-405 Improvement Project

11 Documents in Project


SCH Number
Lead Agency
Caltrans 12 (Santa Ana) (California Department of Transportation, District 12)
Document Title
San Diego Freeway I-405 Improvement Project
Document Type
EIR - Draft EIR

Document Description
Note: Extended Review. The I-405 Improvement Project proposes to widen the corridor by adding: one general purpose (GP) lane in each direction between Euclid Street and I-605; or two GP lanes in each direction between Brookhurst/Euclid Streets and I-605; or one GP lane between Euclid Street and I-605 and one tolled Express Lane in each direction between State Route 73 (SR-73) and SR 22 east of I-405 to be managed jointly as a tolled Express Facility with two lanes in each direction 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
California Department of Transportation, District 12
3347 Michelson Drive, Suite 380
Irvine, CA 92612

(949) 724-2245


Seal Beach Huntington Beach Fountain Valley Costa Mesa
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

Review Period Start
Review Period End
Development Type
Transportation:Highway/Freeway (Highway Improvement)
Local Action
Other Action Other Action: Hwy Improvement
Project Issues
Cumulative Effects Landuse Growth Inducing Wetland/Riparian Water Supply Water Quality Vegetation Traffic/Circulation Toxic/Hazardous Solid Waste Soil Erosion/Compaction/Grading Sewer Capacity Septic System Schools/Universities Recreation/Parks Public Services Population/Housing Balance Noise Minerals Geologic/Seismic Forest Land/Fire Hazard Flood Plain/Flooding Fiscal Impacts Economics/Jobs Drainage/Absorption Coastal Zone Biological Resources Archaeologic-Historic Air Quality Agricultural Land Aesthetic/Visual
Reviewing Agencies
Other - Public Comments Department of Toxic Substances Control Native American Heritage Commission California Public Utilities Commission California Department of Parks and Recreation California Highway Patrol Caltrans, Division of Aeronautics Department of Conservation Department of Fish and Wildlife, Region 5 Department of Water Resources Office of Historic Preservation Resources Agency State Lands Commission State Water Resources Control Board, Division of Water Quality
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