I-280/Winchester Boulevard Interchange Improvements Project


SCH Number
Lead Agency
California Department of Transportation, District 4 (DOT)
Document Title
I-280/Winchester Boulevard Interchange Improvements Project
Document Type
NOP - Notice of Preparation
Present Land Use

Document Description
The Project proposes to modify the existing I-280/Winchester Boulevard interchange by constructing a new off-ramp from northbound I-280 to the intersection of Tisch Way and Hatton Street and a new direct connector ramp from northbound State Route 17 (SR17) to northbound I-280.

Contact Information
Charles Winter
Caltrans, District 4
Lead/Public Agency
111 Grand Avenue, MS 8B
Oakland, CA 94612

Phone : (510) 847-3752


San Jose
Santa Clara
Northern California San Francisco Bay Area
Cross Streets
I-280/ Winchester Boulevard interchange, Tisch Way/Hatton Street
State Highways
I-280, SR17, I-880

Notice of Completion

Review Period Start
Review Period End
Development Type
Transportation:Highway/Freeway Transportation:Local Road
Project Issues
Aesthetics Air Quality Biological Resources Cultural Resources Cumulative Effects Drainage/Absorption Flood Plain/Flooding Geology/Soils Hazards & Hazardous Materials Hydrology/Water Quality Land Use/Planning Noise Public Services Recreation Transportation Vegetation
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 Resources Recycling and Recovery California Department of Transportation, District 4 (DOT) California Department of Water Resources (DWR) California Energy Commission California Governor's Office of Emergency Services (OES) California Highway Patrol (CHP) 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) Department of General Services (DGS) Department of Toxic Substances Control Office of Historic Preservation San Francisco Bay Conservation and Development Commission (BCDC) State Water Resources Control Board, Division of Water Quality California Native American Heritage Commission (NAHC)


Environmental Document
280 Winchester NOP - OPR Final 20200904   PDF 2362 K
280 Winchester NOC - OPR Final 20200903   PDF 233 K
State Comments
2020090118_NAHC Comment   PDF 298 K

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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