| Abstract: | This report describes a technique that can be used to assess potential and observed scour at highway bridges over waterways. Channel-stability assessments were conducted at 876 State highway, U.S. highway, and Interstate highway bridges over waterways in the State of Maryland. Conventional data-collection techniques were used in the field to collect bridge and stream-channel data for each bridge. A potential-scour index and an observed- scour index were developed by assigning numerical-index values to specific diagnostic characteristics of the bridge and stream channel. Potential-scour ratings and observed-scour ratings for assessed bridges were obtained by summing numerical-index values that were assigned to each diagnotic characteristic in the potential-scour index and the observed-scour index. |
| Genre: | USGS Numbered Series |
| ProdID: | 22901 |
| Citation Author: | Doheny, E. J.; Helinsky, B. M.; McGregor, R. A. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | viii, 75 p. :ill., maps ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey ;
Branch of Information Services [distributor], |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 95-135 |
| Citation Search Results Text: | A technique for preliminary appraisal of potential and observed scour as applied to state-maintained highway bridges in Maryland; 1996; OFR; 95-135; Doheny, E. J.; Helinsky, B. M.; McGregor, R. A. |
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| Citation Year: | 1996 |
| Type: | citation/reference |
| Text: | A technique for preliminary appraisal of potential and observed scour as applied to state-maintained highway bridges in Maryland; 1996; OFR; 95-135; Doheny, E. J.; Helinsky, B. M.; McGregor, R. A. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/of/1995/0135/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/of/1995/0135/report.pdf |
| Date Other: | Tue, 1 Apr 1997 00:00 -0600 |
| Publisher: | U.S. Geological Survey ;
Branch of Information Services [distributor], |
