State Route 121 Tulucay Creek Bridge Replacement Project

3 Documents in Project


SCH Number
Lead Agency
California Department of Transportation, District 4 (DOT)
Document Title
State Route 121 Tulucay Creek Bridge Replacement Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Highway/Transportation Corridor and Commercial Tourist
Document Description
The Tulucay Creek Bridge Replacement Project is located along State Route 121/ Soscol Avenue, at Post Mile 6.4-6.5 in Napa, California. The purpose of the Project is to restore the structural integrity of the Tulucay Creek Bridge to provide safe continued use by the traveling public. The Project proposes to replace the existing two-span, concrete Tulucay Creek Bridge (Bridge 21-0003) with a single-span, precast, pre-stressed, concrete box bridge. The existing bridge is 45 feet long and 77 feet wide and has four 12-foot lanes (two in each direction), two 6-foot outside shoulders (one in each direction), and a 9-foot median. Two build alternatives are being considered: Alternative 2 proposes a new bridge 77 feet long, 100 feet wide, including the bridge rails and would have four 12-foot lanes (two in each direction), two 8-foot shoulders, two 10-foot sidewalks, and a 14 foot median. Alternative 3 would be the same as Alternative 2 except the bridge would be 96 feet wide and the southbound sidewalk would be 6 feet wide as opposed to 10 feet. One of the potential consequences of the Project would be the potential adverse effect to an archaeological site due to the proposed excavation and construction of the Project's new abutments, utility relocation, and drainage.

Contact Information

Maxwell Lammert
Agency Name
California Department of Transportation District 4
Job Title
Senior Environmental Planner
Contact Types
Lead/Public Agency


Citywide, Countywide, Northern California, San Francisco Bay Area
Cross Streets
SR 121, Soscol Ave
Total Acres
Parcel #
State Highways
SR 121
Phillps Magnet Elementary
Tulucay 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 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, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality, California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW)
State Reviewing Agency Comments
California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW)
Development Types
Transportation:Highway/Freeway (Bridge Replacement)
Local Actions
Bridge Replacement
Project Issues
Aesthetics, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Mandatory Findings of Significance, Noise, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Wildfire
Local Review Period Start
Local Review Period End


Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from state reviewing agencies]

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 or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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