State Route 39 North Fork San Gabriel River Bridge Scour Migation/Seismic Retrofit Project

7 Documents in Project


SCH Number
Lead Agency
Caltrans 7 (Los Angeles) (California Department of Transportation, District 7)
Document Title
State Route 39 North Fork San Gabriel River Bridge Scour Migation/Seismic Retrofit Project
Document Type
CON - Early Consultation
Present Land Use
Transportation/United States Forest Service - Angeles National Forest

Document Description
The California Department of Transportation (Caltrans) is formally initiating studies for an Initial Study/Environmental Assessment for the proposed improvements to the North Fork San Gabriel River Bridge (Bridge No. 53-2245). Two alternatives are proposed to mitigate the potential scour problem at the North Fork San Gabriel Bridge. Alternative 1 consists of scour mitigation, seismic retrofit, and bridge rail replacement. Additionally, this alternative proposes to construct steel column casings, footing retrofit with steel piles, retaining walls along the stream, check dams, and rock slope protection. Alternative 2 proposes a bridge replacement on the same alignment.

Contact Information
Natalie Hill
California Department of Transportation, District 7
100 South Main Street, MS-16A
Los Angeles, CA 90012

Phone : (213) 897-0841


Los Angeles
San Gabriel River and tributaries

Notice of Completion

Review Period Start
Review Period End
Development Type
Transportation:Other (Bridge Rehabilitation)
Project Issues
Aesthetic/Visual Air Quality Archaeologic-Historic Biological Resources Drainage/Absorption Economics/Jobs Flood Plain/Flooding Forest Land/Fire Hazard Geologic/Seismic Minerals Noise Public Services Recreation/Parks Soil Erosion/Compaction/Grading Solid Waste Toxic/Hazardous Traffic/Circulation Vegetation Water Quality Water Supply Wetland/Riparian Wildlife Growth Inducing Land Use
Reviewing Agencies
Cal Fire California Department of Conservation California Department of Fish and Wildlife, South Coast Region 5 California Department of Parks and Recreation California Department of Transportation, District 7 California Highway Patrol California Public Utilities Commission California Regional Water Quality Control Board, Los Angeles Region 4 California State Lands Commission Department of Toxic Substances Control Department of Water Resources Office of Emergency Services, California Office of Historic Preservation Resources Agency San Gabriel and Lower Los Angeles Rivers and Mountains Conservancy California Native American Heritage Commission

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.

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