Willow Slough Bridge Replacement Project

Willow Slough Bridge Replacement Project

The California Department of Transportation (Caltrans) proposes to replace the existing southbound Willow Slough Bridge (Left Bridge–Bridge No. 24-0046L) with a new bridge on State Route (SR) 99 from post miles (PM) 6.04 to 7.06, approximately 6 miles north of the Sacramento and San Joaquin county line. The proposed scope of work includes constructing a new bridge at a higher elevation to match the existing northbound bridge elevation (Right Bridge–Bridge No. 24-0046R) at Willow Slough. The new Left Bridge will be designed to be raised in the future with the two bridges separated by a physical gap. In addition, this project would install Transportation Management System (TMS), remove the existing Thrie beam guardrail, and place a Type 842 Concrete Barrier for each bridge. The project would require one temporary construction easement (TCE); however, no acquisition of new permanent right of way is needed.

Elk Grove

Sacramento

Northern California

California Air Resources Board (ARB), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Toxic Substances Control (DTSC), California Department of Transportation, District 3 (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 Public Utilities Commission (CPUC), California State Lands Commission (SLC), California Transportation Commission (CATC), Central Valley Flood Protection Board, Delta Protection Commission, Delta Stewardship Council, Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality, California Department of Conservation (DOC), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB), California Department of Fish and Wildlife, North Central Region 2 (CDFW)

California Department of Conservation (DOC), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB), California Department of Fish and Wildlife, North Central Region 2 (CDFW)

Transportation:Highway/Freeway (Bridge replacement)

Bridge replacement

Biological Resources, Greenhouse Gas Emissions, Hydrology/Water Quality