Interstate 580/Corral Hollow Road Interchange Bridge Improvement Project

Interstate 580/Corral Hollow Road Interchange Bridge Improvement Project

Caltrans, in cooperation with the City, proposes to enhance local and regional traffic circulation and reduce existing and future congestion at the Interstate 580/Corral Hollow Road interchange resulting from buildout of the Tracy Hills Specific Plan. The current Interstate 580/Corral Hollow Road Interchange is a Tight Diamond configuration with single-lane on- and off-ramps. A two-way stop sign controls the intersections of Corral Hollow Road and the ramp entrances/exits. The project proposes reconfiguring the existing Tight Diamond with a Diverging Diamond interchange. The proposed project includes the following improvements: • Widen and upgrade the Corral Hollow Road Overpass structure (Bridge Number 29-0080) to match the existing four lanes along Corral Hollow Road on either side of the interchange and construct a new concrete barrier between the vehicle lanes and a new center-running multi-purpose bike/pedestrian path. • Reconfigure the eastbound and westbound Interstate 580 ramp intersections with Corral Hollow Road to a Diverging Diamond configuration and install a new two-phase signal. • Install new traffic signals at the eastbound and westbound ramp intersections at Corral Hollow Road. • Stripe crosswalks on the north leg of the westbound Interstate 580 ramp intersection and the south leg of the eastbound Interstate 580 ramp intersection. The eastbound on-ramp crosses Corral Hollow Creek. Two design options are being considered to address the crossing: • Design Option A would involve widening the existing bridge over the Corral Hollow Creek (Bridge Number 29-0081L) to accommodate the eastbound on-ramp, including an additional lane and paved shoulder. •Design Option B would involve complete replacement of the existing Corral Hollow Creek Bridge. The California Department of Transportation (Caltrans) proposes to conduct multimodal improvements for the Interstate 580/Corral Hollow Interchange between post mile 7.6 and post mile 8.6 in San Joaquin County

Tracy

San Joaquin

Northern California, Unincorporated

California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Fish and Wildlife, North Central Region 2 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Pesticide Regulation (DPR), California Department of Toxic Substances Control (DTSC), California Department of Transportation, District 10 (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 Fish and Game Commission (CDFGC), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Central Valley Fresno Region 5 (RWQCB), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB), California San Joaquin River Conservancy (SJRC), California State Lands Commission (SLC), California Transportation Commission (CATC), Central Valley Flood Protection Board, Delta Protection Commission, Delta Stewardship Council, Department of Food and Agriculture (CDFA), Department of General Services (DGS), Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights

Transportation:Other (Interchange Improvement)

Other-transportation project

Air Quality, Biological Resources, Cumulative Effects, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Noise, Transportation