State Route 12/State Route 113 Intersection Improvement Project

4 Documents in Project


SCH Number
Lead Agency
Caltrans 4 (Oakland) (California Department of Transportation, District 4)
Document Title
State Route 12/State Route 113 Intersection Improvement Project
Document Type
MND - Mitigated Negative Declaration

Document Description
Caltrans proposes to improve safety at the intersection of SR 12/SR113, located at post mile 19.2 on SR 12 in unincorporated Solano County, approximately six miles west of the city of Rio Vista. Two build alternatives are being considered for this proposed project: 1) a single lane roundabout, and 2) a signalized intersection. This is a safety project and aims to reduce the number of collisions at the SR 12 and SR 113 intersection. The new roundabout structure or signalized intersection would be constructed at the same location as the existing un-signalized four-way intersection.

Contact Information
Karen Jang
California Department of Transportation, District 4
111 Grand Avenue
Oakland, CA 94612

(510) 286-5583


38°11'01.2"N 48°22'0.2"W
Rio Vista
Cross Streets
SR 12/113, PM 19.2
State Highways
SR 12/113

Notice of Completion

Review Period Start
Review Period End
Development Type
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Biological Resources Drainage/Absorption Economics/Jobs Flood Plain/Flooding Geologic/Seismic Noise Public Services Toxic/Hazardous Traffic/Circulation Water Quality Wetland/Riparian Land Use
Reviewing Agencies
Air Resources Board, Transportation Projects California Department of Parks and Recreation California Highway Patrol Delta Protection Commission Department of Fish and Wildlife, Region 3 Department of Toxic Substances Control Department of Water Resources Native American Heritage Commission Office of Historic Preservation Regional Water Quality Control Board, Region 2 Resources Agency State Lands Commission Regional Water Quality Control Bd., Region 5 (Sacramento)
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