A modified index for assessment of potential scour at bridges over waterways
Open-File Report
96-554
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Abstract
The modified potential-scour index described in this report is based on a potential-scour index used by the U.S. Geological Survey Maryland District (Maryland index), and a prototype index developed by the U.S. Geological Survey Tennessee District (Tennessee index). The modifications were made to (1) improve the technical content of theMaryland index, and (2) provide a more extensive set of index variables for assessment of potential scour at bridges. The 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. A comparison of potential-scour ratings from the modified potential- scour index, as applied to two bridges, is presented.This comparison indicates that the modified potential-scour index produces potential-scour ratings that most consistently reflect scour conditions observed at these bridges.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | A modified index for assessment of potential scour at bridges over waterways |
| Series title | Open-File Report |
| Series number | 96-554 |
| DOI | 10.3133/ofr96554 |
| Edition | - |
| Year Published | 1996 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey ; Branch of Information Services [distributor], |
| Description | iv, 16 p. ;28 cm. |
| Google Analytic Metrics | Metrics page |