US Highway 101/State Route 46 West Interchange Modification Project

US Highway 101/State Route 46 West Interchange Modification Project

NOTE: Joint Document consists of Mitigated Negative Declaration and Environmental Assessment. The California Department of Transportation proposes to relieve local and regional circulation problems and reduce existing and future congestion by improving the US 101/State Route 46 West interchange ramps, and relocating Theatre Drive to a new intersection with State Route 46 West, west of its current location. The interchange reconstruction would convert the existing compact diamond interchange signal-controlled ramp intersections into roundabouts. Adjacent frontage roads would be either redirected into the new roundabouts or relocated away from the interchange. The proposed project does not include any modifications to the US 101 through lanes. Improvements would be made to all four on- and off-ramps in the interchange to achieve the desired geometry and traffic operations.

Paso Robles

San Luis Obispo

Air Resources Board, Transportation Projects, California Department of Fish and Wildlife, Central Region 4 (CDFW), California Department of Parks and Recreation, California Highway Patrol, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, Central Coast Region 3 (RWQCB), California State Lands Commission (SLC), Department of Toxic Substances Control, Department of Water Resources, Office of Historic Preservation, Resources Agency

Transportation:Highway/Freeway (Interchange Modification)

Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Noise, Public Services, Transportation, Vegetation, Wetland/Riparian, Wildlife