San Gabriel Trench Grade Separation Project

4 Documents in Project


SCH Number
Lead Agency
Alameda Corridor-East Construction Authority
Document Title
San Gabriel Trench Grade Separation Project
Document Type
NOP - Notice of Preperation
Present Land Use
M-1, Light Manufacturing

Document Description
The San Gabriel Trench grade separation project is located along the Union Pacific Railroad (UPRR) Alhambra Subdivision. The existing track depression through the City of Alhambra would be continued eastward through the City of San Gabriel. A 2.1-mile section of the track will be lowered to below grade in a trench and bridges would be constructed at Ramona Street, Mission Road, Del Mar Avenue and San Gabriel Boulevard. The rail line would return to grade where it crosses the Rubio Wash, east of San Gabriel Boulevard. Ramona Street, Mission Road, and Del Mar Avenue all would ramin at their current elevations; however, San Gabriel Boulevard would be raised not more than 2 feet to accomplish the grade separation at that crossing. The rail crossing at Walnut Grove Avenue would remain at-grade with a shadow lowering of the roadway to match the proposed railroad grade. In addition, new bridge structures will be provided at the Alhambra Wash and the Rubio Wash. Construction of the project is anticipated to begin in 2011 and be completed in 2014.

Contact Information
Regina Talamantez
Alameda Corridor-East Construction Authority
4900 Rivergrade Road, Suite A120
Irwindale, CA 91706

Phone : (626) 962-9292


34°05'44"N 110°06'32"W
San Gabriel
Los Angeles
Cross Streets
Total Acres
2.1 miles
Parcel #
State Highways
Alhambra Wash and Rubio Wash

Notice of Completion

Review Period Start
Review Period End
Development Type
Transportation:Other (Grade separation of existing RR)
Local Action
Site Plan
Project Issues
Aesthetic/Visual Air Quality Archaeologic-Historic Drainage/Absorption Economics/Jobs Flood Plain/Flooding Geologic/Seismic Minerals Noise Population/Housing Balance Public Services Recreation/Parks Schools/Universities Septic System Sewer Capacity Soil Erosion/Compaction/Grading Solid Waste Toxic/Hazardous Traffic/Circulation Water Quality Water Supply Wetland/Riparian Wildlife Growth Inducing Land Use Cumulative Effects
Reviewing Agencies
Air Resources Board, Transportation Projects California Department of Parks and Recreation California Highway Patrol California Public Utilities Commission Caltrans, District 7 Department of Conservation Department of Water Resources Regional Water Quality Control Board, Region 4 Resources Agency Native American Heritage Commission Department of Fish and Wildlife, Region 5
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