State Route 116-121 Intersection Improvements Project

3 Documents in Project


SCH Number
Lead Agency
Caltrans 4 (Oakland) (California Department of Transportation, District 4)
Document Title
State Route 116-121 Intersection Improvements Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Transportation, Ag, commercial and rural residential

Document Description
Note: Review Per Lead The intersection improvement project has two proposed alternatives. The Roundabout Alternative includes construction of a hybrid multilane roundabout with 180 degrees of the circulatory roadway having two lanes, a full right-turn bypass lane in the northbound direction, and a partial right-turn bypass lane in the westbound direction. The Signalized Intersection Alternative proposes to introduce a four-way traffic signal to the project intersection. Both Build Alternatives include construction of pedestrian and bicycle facilities.

Contact Information
Arnica MacCarthy
California Department of Transportation, District 4
111 Grand Avenue
Oakland, CA 94623-0060

Phone : (510) 286-7195


Cross Streets
SR 116 (PM 46.0/46.7), SR 121 (PM 5.8/R7.4), Bonneau Road
State Highways
SR 116, 121, 12
Son. Skypark, Son. Val.
Yellow Creek, Sonoma Creek
Other Location Info

Notice of Completion

Review Period Start
Review Period End
Development Type
Transportation:Other (Intersection improvements)
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Biological Resources Flood Plain/Flooding Geologic/Seismic Noise Soil Erosion/Compaction/Grading Toxic/Hazardous Traffic/Circulation Vegetation Water Quality Water Supply Wetland/Riparian Growth Inducing Land Use Cumulative Effects
Reviewing Agencies
California Department of Fish and Wildlife, Bay Delta Region 3 California Department of Parks and Recreation California Department of Transportation, District 4 California Highway Patrol California Native American Heritage Commission California Regional Water Quality Control Board, San Francisco Bay Region 2 Caltrans, Division of Aeronautics Resources Agency

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613.

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