State Route 46 Corridor Improvement Project - Antelope Grade Section

18 Documents in Project


SCH Number
Lead Agency
California Department of Transportation, District 5 (DOT)
Document Title
State Route 46 Corridor Improvement Project - Antelope Grade Section
Document Type
FIN - Final Document
Present Land Use
Rural Agricultural/Transportation
Document Description
The California Department of Transportation (Caltrans) proposes to convert a 3.6 mile portion of State Route 46 to an expressway located in San Luis Obispo and Kern Counties. The project would construct a four-lane expressway with a 62-foot median on a new alignment that roughly parallels the existing highway corridor to the north. The project would connect the existing four-lane expressway section in Kern County with the four-lane expressway currently under construction, the Wye segment, creating a continuous east-west corridor of four-lane expressway from Interstate 5 to U.S. 101.

Contact Information

Dianna Beck
Agency Name
California Department of Transportation
Job Title
Associate Environmental Planner
Contact Types
Lead/Public Agency


Unincorporated communities Shandon/Lost Hills 10/30 miles resp.
Kern, San Luis Obispo
Cross Streets
State Route 46, Antelope Road
State Highways
SR 46, SR 41
Cholame Creek
Other Location Info
R17E, Section 30
Other Information
Spans county boundary between San Luis Obispo and Kern County from Caltrans post mile 57.3 in SLO County to 0.4 in Kern County.

Notice of Completion

State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, Central Region 4 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Transportation, District 5 (DOT), California Department of Transportation, District 6 (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 Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, Central Coast Region 3 (RWQCB), California Regional Water Quality Control Board, Central Valley Fresno Region 5 (RWQCB), California Transportation Commission (CATC), Central Valley Flood Protection Board, Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water
Development Types
Local Actions
Not Applicable/Transportation Improvement
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Energy, Geology/Soils, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Hydrology/Water Quality, Mandatory Findings of Significance, Transportation, Utilities/Service Systems, Vegetation, Wetland/Riparian, Wildfire


Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Final Document(s) [Approved_Certified draft environmental documents]
Notice of Completion [NOC] Transmittal form

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 or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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