I-10 ExpressLanes Extension Project


SCH Number
Lead Agency
California Department of Transportation, District 7 (DOT)
Document Title
I-10 ExpressLanes Extension Project
Document Type
NOP - Notice of Preparation of a Draft EIR
Present Land Use
Document Description
The Los Angeles County Metropolitan Transportation Authority (Metro), in cooperation with the California Department of Transportation (Caltrans) District 7 (D7) proposes to address High Occupancy Vehicle (HOV) degradation, improve mobility, provide multi-modal travel options, and address the ExpressLane gap on I-10 between I-605 and Los Angeles/San Bernardino County Line through the conversion of the existing HOV lane into a High Occupancy Toll Lane (HOT)/ExpressLane lane with the possible addition of a second ExpressLane or HOV lane in each direction. Caltrans will prepare an Environmental Impact Report (EIR) and Environmental Assessment (EA) for the proposed project which will assess the following proposed alternatives: 1) no build; 2) the conversion of the existing HOV lane into an ExpressLane/HOT lane in each direction; 3) the conversion of the existing HOV lane to dual ExpressLanes/HOT lanes in each direction, or 4) the addition of a second HOV lane to the existing single HOV lane in each direction.

Contact Information

Robert Wang
Agency Name
Caltrans District 7
Job Title
Senior Environmental Planner
Contact Types
Lead/Public Agency


Baldwin Park, Claremont, Covina, El Monte, Industry, Los Angeles, Montclair, Pomona, San Dimas, Walnut, West Covina
Los Angeles, San Bernardino
Citywide, Countywide, Southern California
Cross Streets
Total Acres
State Highways
I-605, SR-39, SR-57, SR-71
MetroLink, Union Pacific, BNSF
SGV Airport, SCE Rosemead
San Gabriel River, Big Dalton Wash, Charter Oak Creek, Walnut Creek, Thompson Wash
Other Location Info
Interstate 10 from Valley Boulevard to LA/SBD County Line (postmiles 28.9/48.3)

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Transportation, District 7 (DOT), California Department of Transportation, Division of Aeronautics (DOT), California Department of Transportation, Division of Transportation Planning (DOT), California Department of Water Resources (DWR), California Highway Patrol (CHP), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Los Angeles Region 4 (RWQCB), California State Lands Commission (SLC), California Transportation Commission (CATC), Department of Toxic Substances Control, Office of Historic Preservation, San Gabriel and Lower Los Angeles Rivers and Mountains Conservancy (RMC), State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality, California Native American Heritage Commission (NAHC)
State Reviewing Agency Comments
California Native American Heritage Commission (NAHC)
Development Types
Transportation:Highway/Freeway (Highway/ Toll way)
Local Actions
Initiation of Environmental Studies
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Economics/Jobs, Fiscal Impacts, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Solid Waste, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian, Wildfire


Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from state reviewing agencies]

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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