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Open AccessArticle10.3133/ofr96554

A modified index for assessment of potential scour at bridges over waterways

Edward J. Doheny-1996-01-01-Antarctica A Keystone in a Changing World
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TL;DRAbstract

A modified potential-scour index has been developed to assess the potential for scour at bridges over waterways. The modified index is based on a potential-scour index used by the U.S. Geological Survey (USGS) Maryland District (the Maryland index) and the original prototype potentialscour index developed by the USGS Tennessee District. The modifications were made to (1) improve the technical content of the Maryland index, and (2) provide a more extensive set of index variables for assessment of potential scour at bridges. This report demonstrates and describes problems that were encountered when using the Maryland index in a study of county-maintained bridges in Maryland from 1993 to 1995. The modifications made to specific index variables and ranking values in the Maryland index are presented and discussed.

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A modified potential-scour index has been developed to assess the potential for scour at bridges over waterways. The modified index is based on a potential-scour index used by the U.S. Geological Survey (USGS) Maryland District (the Maryland index) and the original prototype potentialscour index developed by the USGS Tennessee District. The modifications were made to (1) improve the technical content of the Maryland index, and (2) provide a more extensive set of index variables for assessment of potential scour at bridges. This report demonstrates and describes problems that were encountered when using the Maryland index in a study of county-maintained bridges in Maryland from 1993 to 1995. The modifications made to specific index variables and ranking values in the Maryland index are presented and discussed.

Keywords

Index (typography)Ranking (information retrieval)EngineeringHydrology (agriculture)Environmental scienceCivil engineeringGeotechnical engineeringComputer science

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