Bonita School Road Bridge (51C-0230) Replacement


SCH Number
Lead Agency
Santa Barbara County
Document Title
Bonita School Road Bridge (51C-0230) Replacement
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Exiting road right of way. Santa Barbara County: Land Use and Development Code; zoned AG-II-40 San Luis Obispo County: Agriculture
Document Description
The Santa Barbara County Public Works Department proposes the replacement of the Bonita School Road bridge and embankment fill with a full span bridge. Project components include a new 2,321 foot-long, full span bridge. Roadway approaches to conform to the new bridge profile and existing access roads. Modifications as required to levee ramps to maintain County Flood Control District access. Bio-retention basins to collect and treat post-construction storm water associated with project components. Americans with Disabilities Act-compliant separated pedestrian path on the bridge deck. Appropriate roadway signage and pavement markings. The proposed project involves a new bridge and deck would be up to nine feet higher than the existing crossing and up to 21 feet above the riverbed (north end). The total length of proposed improvements would be approximately 4,060 feet, including the new bridge and approach roadway modifications. The bridge superstructure would be constructed of pre-cast, pre-stressed wide-flange concrete girders. The bridge deck would be approximately 48.5 feet-wide and provide two 12-foot-wide traffic lanes (one each direction), two 8-foot-wide shoulders and one 5-foot-wide pedestrian path. The shoulders would include bike lanes in each direction. The pedestrian path would be separated from the traffic lane and shoulder by a barrier. The bridge would be supported by 15 sets of two five-foot diameter concrete columns founded on seven-foot diameter cast-in-drill-hole piles with pre-cast concrete pile caps. The top of the pile caps would be buried 13.7 feet below finished grade (riverbed) to minimize the potential for exposure by scour during peak storm flow events. Safety lighting would be provided along the east side of the bridge, composed of 30-foot-tall light standards spaced approximately 145 feet apart. Resulting light levels are estimated as approximately 0.5 foot-candles on average along the bike path.

Contact Information

Morgan Jones
Agency Name
Santa Barbara County Public Works Transportation Division
Job Title
Engineering Environmental Program Business Leader
Contact Types
Lead/Public Agency / Project Applicant


Santa Maria
Santa Barbara
Southern California
Cross Streets
Bonita School Road and Highway 166
Total Acres
Parcel #
SB 113-050-035, 113-050-036, 113-050-037, 113-050-038, 113-050-044......
State Highways
Bonita Elementary School
Santa Maria 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 Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Transportation, District 5 (DOT), California Department of Water Resources (DWR), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, Central Coast Region 3 (RWQCB), California State Lands Commission (SLC), Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Water Quality
Development Types
Transportation:Local Road (Bridge replacement of local road), Transportation:Other (replacement of existing bridge )
Local Actions
Project Issues
Biological Resources, Hazards & Hazardous Materials, Hydrology/Water Quality, Noise
Local Review Period Start
Local Review Period End


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