McMahon & Mann Consulting Engineering and Geology, P.C.

Bridge No. 31- Foundation Recommendations

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Bridge No. 31- Foundation Recommendations
Project Details
Location: Franklinville, New York
Client: Cattaraugus County DPW.
Client Contact: Mr. Mark C. Burr, P.E. 716-938-9121

Project Gallery

The project designer, Erdman Anthony, was requested to design a replacement for this existing bridge over Ishua Creek, south of Franklinville, New York.

MMCE provided geotechnical engineering services to the project designer, for design of the foundations for the abutments. The soil borings indicated a dense gravel layer over clay soils which extended to more than 100 feet deep. Because of the deep soft clay deposit a pile foundation was considered impractical.

A spread footing foundation was selected to support the new bridge abutments. MMCE sampled and tested the clay soil for consolidation characteristics. The boring and testing data were used to analyze the allowable foundation bearing pressure and to estimate the settlement of the proposed foundation system. The bridge was designed with a shallow foundation and sheet pile walls to protect the shallow foundations from scour. 

Related Documents

Bridge No. 31-Foundation Recommendations Project Description - This document contains information on this project

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