Calpella 2 Bridge Replacements (EA: 01-0E090)

4 Documents in Project


SCH Number
Lead Agency
California Department of Transportation, District 3 (DOT)
Document Title
Calpella 2 Bridge Replacements (EA: 01-0E090)
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Public Facilities, Agricultural, Industrial, Commercial, and Rural Residential.
Document Description
Caltrans proposes to perform a complete bridge replacement of the Russian River Bridge (Bridge #10-182) and Redwood Valley Road Undercrossing (UC) (Bridge #10-183) on a new alignment, located along SR-20 in Mendocino County near Ukiah between post miles (PM) 33.3 to 34.4. To insure traffic would not be significantly impeded during construction, the existing structures and alignment would remain in place during construction. This would require that the new structure be on a new alignment south of the existing alignment. The alternatives involve additional work such as embankment cut/fill, paving bridge approaches, roadway realignment, and shoulder widening. Each alternative proposes the addition of acceleration and deceleration lanes with standard tapers for the intersection of SR-20 and County Road (CR) 144. Currently, the bridge deck has numerous transverse cracks leaving the bridge susceptible to punching shear failure.

Contact Information

Adele Pommerenck
Agency Name
Department of Transportation (Caltrans)
Contact Types
Lead/Public Agency


Cross Streets
Eastside Calpella Road and MEN-20
Parcel #
Caltrans Right of Way and adjacent private property
State Highways
Northwestern Pacific Railroad
Russian River

Notice of Completion

State Review Period Start
State Review Period End
Development Types
Transportation (Bridge Replacement)
Local Actions
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Fiscal Impacts, Flood Plain/Flooding, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Transportation, Vegetation, Wetland/Riparian, Wildfire
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), 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 Water Resources (DWR), 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, North Coast Region 1 (RWQCB), California State Lands Commission (SLC), Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Water Quality, California Native American Heritage Commission (NAHC), California Department of Fish and Wildlife, Eureka Region 1 (CDFW)
Reviewing Agency Comments
California Native American Heritage Commission (NAHC), California Department of Fish and Wildlife, Eureka Region 1 (CDFW)


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