Geysers Road over Frasier Creek Bridge Replacement Project

2 Documents in Project


SCH Number
Lead Agency
Sonoma County
Document Title
Geysers Road over Frasier Creek Bridge Replacement Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
County owned Right of Way, Rural Residential
Document Description
The Sonoma County Department of Transportation and Public Works (DTPW) proposes to construct a new bridge on the existing alignment of Geysers Road over Frasier Creek. Traffic on Geysers Road will be conveyed over a one-lane temporary bridge that will be constructed on the upstream alignment. The temporary bridge will require temporary reinforced concrete spread footings. The hillside where the temporary bridge will be constructed has a steep slope. In order to retain this hillside, a temporary shoring wall is required along the northwest side approximately 120 feet in length. After demolition of the existing bridge and construction of the new bridge is complete, the temporary bridge including the abutments and shoring walls will be removed and the adjacent hillside will be graded back to a stabilized slope. The new bridge will be 80 feet long, the new abutments will be located further up the creek bank from the existing abutments. A single span bridge is proposed, consisting of a cast-in-place reinforced concrete box girder type approximately 32ft wide, with two 11ft travel lanes and two 3ft shoulders, with no bike lanes or sidewalk.

Contact Information

Jackson Ford
Agency Name
Sonoma County Permit Sonoma
Job Title
Senior Environmental Specialist
Contact Types
Lead/Public Agency


Northern California
Cross Streets
Parcel #
County Right of Way
Frasier Creek, Big Sulphur Creek
Other Location Info
County owned Right of Way, Rural Residential

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 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 Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, North Coast Region 1 (RWQCB), Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water
Development Types
Transportation:Other (Bridge Replacement)
Local Actions
Bridge Replacement
Project Issues
Aesthetics, Air Quality, Biological Resources, Solid Waste, Vegetation, Wetland/Riparian, Aesthetic/Visual, Archeological/Historical, Geologic/Seismic, Soil Erosion/Compaction/Grading, Toxic/Hazardous, Traffic/Circulation, Water Quality
Local Review Period Start
Local Review Period End


Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form

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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