Campbell Creek Culvert Replacement Project

Campbell Creek Culvert Replacement Project

The culvert at the mouth of Campbell Creek conveys the water in Campbell Creek beneath Dry Creek Road into Dry Creek along the south edge of the paved roadway. The culvert is undersized for flood stage flows and is a barrier to fish passage. The Campbell Creek Culvert Replacement Project (Project) is a proposal by Napa County to replace the existing corrugated metal pipe culvert with a bottomless arch bridge precast culvert (bottomless culvert) composed of concrete. In addition to replacement of the culvert, the Project is intended to improve the hydrologic function of Campbell Creek at the culvert’s outlet and along approximately 160 linear feet of creek upstream of the culvert’s inlet by resolving channel incision and reconnecting the creek to its historical floodplain. The Project would be constructed in three phases. Each phase would last between 2 to 4 weeks during a single construction season in the summer/fall of 2024. The Project would require closure of a single lane of Dry Creek Road during Phases I and II of construction; however, two-way traffic would be maintained via an active traffic control plan. Likewise, the Lokoya Fire Station, accessed via Dry Creek Road, will remain open and accessible throughout Project construction.

Napa

Countywide

California Air Resources Board (ARB), 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 4 (DOT), California Department of Water Resources (DWR), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW)

California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW)

Other (Public Facility Upgrade and Creek Restoration)

Site Plan

Aesthetics, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Noise, Transportation, Tribal Cultural Resources, Vegetation, Wetland/Riparian, Wildfire