I-80/Hiddenbrooke Parkway Interchange Project


SCH Number
Lead Agency
City of Vallejo
Document Title
I-80/Hiddenbrooke Parkway Interchange Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Unincorporated, Agriculture (Napa County), Exclusive Agricultural (Solano County)

Document Description
The City of Vallejo is proposing operational improvements at the I-80/Hiddenbrooke Parkway interchange to address existing and future vehicle queues on Hiddenbrooke Parkway. The project will convert the existing stop sign-controlled intersections of the I-80 ramps with American Canyon Road and Hiddenbrooke Parkway, and the intersection of Hiddenbrooke Parkway and McGary Road, into roundabouts. Conversion of these intersections to roundabouts will not require modification of the existing American Canyon Road overcrossing of I-80. The project will require modification of the on and off-ramps where they intersect with local roads but would not involve changes to the ramp connections with I-80 or the existing mainline of the freeway. All proposed improvements would occur within existing State and local public rights of way. No displacement of an existing business or homes, nor the acquisition of private property would be required. In addition, no nonstandard design features are necessary to implement the project.

Contact Information
David Yatabe
City of Vallejo
Lead/Public Agency
555 Santa Clara Street
Vallejo, CA 94590

Phone : (707) 648-4300


38°10'8.5794"N 122°11'57.732"W
Citywide Countywide Northern California Unincorporated
Cross Streets
Interstate 80 and Hiddenbrooke Parkway
Total Acres
State Highways
Elder Creek, North Rindler Creek

Notice of Completion

Review Period Start
Review Period End
Development Type
Transportation:Other (Intersection/Interchange Improvements)
Local Action
Project Issues
Aesthetics Agriculture and Forestry Resources Air Quality Biological Resources Cultural Resources Cumulative Effects Drainage/Absorption Energy Flood Plain/Flooding Geology/Soils Greenhouse Gas Emissions Growth Inducement Hazards & Hazardous Materials Hydrology/Water Quality Land Use/Planning Mandatory Findings of Significance Mineral Resources Noise Population/Housing Public Services Recreation Schools/Universities Septic System Sewer Capacity Solid Waste Transportation Tribal Cultural Resources Utilities/Service Systems Vegetation Wetland/Riparian Wildfire
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 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 Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB) Office of Historic Preservation State Water Resources Control Board, Division of Drinking Water


Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Appendix_AQ-GHG   PDF 1456 K Appendix_Biological Resources Report   PDF 13489 K Appendix_Cultural Memo   PDF 2986 K Appendix_Traffic and Transportation   PDF 19091 K Appendix_Wetland Delineation   PDF 12513 K Hiddenbrooke Draft IS-MND   PDF 3705 K NOI   PDF 140 K Summary_Form_for_Document_Submittal   PDF 591 K
Notice of Completion [NOC] Transmittal form
NOC   PDF 1041 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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