French Bar Road Bridge Replacement – Amador County, CA

French Bar Road Bridge Replacement
French Bar Road Bridge Replacement

Holdrege & Kull provided design services for this federally funded HBP bridge replacement over the south fork of Jackson Creek. H&K’s services included a geotechnical subsurface investigation, performed in order to provide engineering design recommendations for earthwork and structural improvements. The investigation was performed following the guidelines and reporting requirements of Caltrans’ Foundation Report Preparation for Bridges. H&K prepared recommendations that included design parameters for foundation types and embedment depths, allowable soil bearing capacity, foundation soil friction coefficients, retaining wall lateral earth pressure coefficients, and seismic design parameters. Project challenges included resistant rock. Approximately 10 feet of rock core was collected from each proposed abutment location. The new bridge abutments will consist of spread footings founded on competent native rock.