Comparison of Theoretical and Historical Scour

by Mark A. Hixson, New York State Thruway Authority, Albany, United States,
Kenneth R. Avery, New York State Thruway Authority, Albany, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

As part of scour assessments at approximately 120 stream crossings on the New York State Thruway, subsurface investigations were performed at all structures and, in some instances, locations of previous scouring have been detected. These results are used in a comparison of historical scour since bridge construction to the predicted scour depths from analysis methods contained in Federal Highway Administration HEC-18. Comparisons and conclusions concerning the predictive equations and their correlation to historical scour and subsurface conditions are presented.



Subject Headings: Scour | Underwater structures | Subsurface investigation | Flow measurement | Water flow | Hydrologic models | Hydraulic models | Structural analysis | New York | United States

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