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

3 Documents in Project


SCH Number
Lead Agency
Caltrans, District 3 - Marysville/Sacramento (California Department of Transportation, District 3)
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
Department of Transportation (Caltrans)
703 B Street
Marysville, CA 95901

Phone : (530) 741-4215


39°14'36.2"N 123°12'0.42"W
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

Review Period Start
Review Period End
Development Type
Transportation (Bridge Replacement)
Local Action
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Biological Resources Fiscal Impacts Flood Plain/Flooding Forest Land/Fire Hazard Geologic/Seismic Minerals Noise Population/Housing Balance Public Services Recreation/Parks Toxic/Hazardous Traffic/Circulation Vegetation Water Quality Wetland/Riparian Land Use Cumulative Effects
Reviewing Agencies
California Air Resources Board California Department of Conservation California Department of Forestry and Fire Protection California Department of Parks and Recreation California Department of Resources Recycling and Recovery California Department of Water Resources California Governor's Office of Emergency Services California Highway Patrol California Natural Resources Agency California Public Utilities Commission California Regional Water Quality Control Board, North Coast Region 1 California State Lands Commission Department of Toxic Substances Control Office of Historic Preservation State Water Resources Control Board, Division of Water Quality California Native American Heritage Commission California Department of Fish and Wildlife, Eureka Region 1


Environmental Document
01-0E090 Calpella DED_signed_final   PDF 15093 K
NOC   PDF 916 K
State Comments
2020029075_CDFW Comment   PDF 365 K 2020029075_NOP Calpella 2 Bridge Replacements (EA 01-0E090) Project 2-24-2020   PDF 248 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 or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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