State Route 37 Sears Point to Mare Island Improvement Project

2 Documents in Project


SCH Number
Lead Agency
California Department of Transportation, District 4 (DOT)
Document Title
State Route 37 Sears Point to Mare Island Improvement Project
Document Type
EIR - Draft EIR
Present Land Use
State right-of-way
Document Description
Caltrans is proposing traffic operational improvements to State Route 37 in Sonoma, Napa, and Solano counties between Sears Point (Son-37-Post Miles 2.9/6.2) and Mare Island (Sol-37-Post Miles 0.0/R7.4) to provide congestion relief, reduce peak travel times, and increase vehicle occupancy. The four build alternatives proposed consider a range of lane configurations as follows: One that converts existing shoulders to create a three-lane facility to provide part-time peak hour congestion relief; one that provides a three-lane facility by installing a movable median barrier for peak hour directional congestion relief; a full-time, four-lane facility with 4-foot shoulders; and a full-time, four-lane facility with 8-foot shoulders.

Contact Information

Yolanda Rivas
Agency Name
Caltrans, District 4
Job Title
Senior Environmental Planner
Contact Types
Lead/Public Agency


Napa, Solano, Sonoma
San Francisco Bay Area
Cross Streets
Total Acres
Parcel #
Primarily State right-of-way
State Highways
SR 37, SR 121
Sonoma-Marin Area Rail Transit
Sonoma Ck, Tolay Creek, Napa River

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 Fish and Wildlife, Habitat Conservation Planning (CDFW), California Department of Fish and Wildlife, Marin Region 7 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, 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 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, San Francisco Bay Conservation and Development Commission (BCDC), State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality
Development Types
Transportation:Other (Roadway Renewal)
Local Actions
Operations Improvement
Project Issues
Aesthetics, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Noise, Public Services, Recreation, Transportation, Vegetation, Wetland/Riparian, Construction- related air quality, noise, GHG
Local Review Period Start
Local Review Period End


Notice of Completion [NOC] Transmittal form

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