| Abstract: | Flooding of the Iowa River during July and August 1993 caused extensive contraction scour at the State Highway 99 bridge over the Iowa River at Wapello, Iowa. At least 3.3 m of piling under the footing of the second pier from the right (west) abutment were exposed. The scoured streambed did not fill in again after the flood receded, and a bathymetric survey in November 1993 showed that the streambed had been scoured for a distance of about 500 m upstream from the bridge. The bridge was closed to traffic, first because of water over the roadway when a levee failed, and then remained closed because of the exposed piling. The bridge subsequently was reopened to traffic with a weight limit of 13.6 tons. |
| Genre: | Conference Paper |
| ProdID: | 70017780 |
| Citation Author: | Fischer, Edward, E. |
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| Citation End Page: | 35 |
| Citation Issue: | pt 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Proceedings - National Conference on Hydraulic Engineering |
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| Citation Number Of Pages: | 5 |
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| Citation Publisher: | Publ by ASCE |
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| Citation Search Results Text: | Contraction scour at a bridge over the Iowa River; 1994; Conference Paper; Proceedings - National Conference on Hydraulic Engineering; Fischer, Edward, E. |
| Citation Start Page: | 31 |
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| Citation Year: | 1994 |
| Type: | citation/reference |
| Text: | Contraction scour at a bridge over the Iowa River; 1994; Conference Paper; Proceedings - National Conference on Hydraulic Engineering; Fischer, Edward, E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | Publ by ASCE |
