Hopper Slough Bridge Replacement Project

4 Documents in Project


SCH Number
Lead Agency
California Department of Transportation, District 4 (DOT)
Document Title
Hopper Slough Bridge Replacement Project
Document Type
EIR - Draft EIR
Present Land Use
Transportation and Agricultural
Document Description
The purpose of the Project is to address the deficiencies of the existing Hopper Slough Bridge using current Caltrans geometric standards that would provide the traveling public with a safer highway. As part of the project, Caltrans proposes two alternatives to replace the current bridge with a new longer bridge that has two 12-foot travel lanes, two 6-foot shoulders and a barrier rail that meets current standards. Additionally, a culvert would be replaced, the roadway between postmile 5.0 and 5.2 would be repaved, and guardrails would be replaced with new Midwest guardrails.

Contact Information

Nathan Roberts
Agency Name
California Department of Transportation (Caltrans) District 4
Job Title
Associate Environmental Planner
Contact Types
Lead/Public Agency / Project Applicant


Rutherford, St. Helena, Yountville
Citywide, Countywide, Unincorporated
Cross Streets
State Route 29
State Highways
128, 29
Napa Valley Wine Train
Napa River, Hopper Slough, Bale Slough

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), 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 Water Resources (DWR), 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, San Francisco Bay Region 2 (RWQCB), California State Lands Commission (SLC), California Transportation Commission (CATC), Department of Toxic Substances Control, 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 Transportation, District 4 (DOT)
State Reviewing Agency Comments
California Department of Transportation, District 4 (DOT)
Development Types
Transportation:Other (Bridge Replacement)
Local Actions
Transportation Bridge Replacement
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Energy, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Noise, Transportation, Tribal Cultural Resources, Vegetation, Wetland/Riparian, Wildfire
Local Review Period Start
Local Review Period End


Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from state reviewing agencies]

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 state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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