Contraction scour at a bridge over the Iowa River
By: Edward E. Fischer
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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.
Study Area
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Contraction scour at a bridge over the Iowa River |
| ISBN | 0784400377 |
| Issue | pt 1 |
| Year Published | 1994 |
| Language | English |
| Publisher | Publ by ASCE |
| Publisher location | New York, NY, United States |
| Contributing office(s) | Iowa Water Science Center |
| Larger Work Title | Proceedings - National Conference on Hydraulic Engineering |
| First page | 31 |
| Last page | 35 |
| Conference Title | Proceedings of the 1994 ASCE National Conference on Hydraulic Engineering |
| Conference Location | Buffalo, NY, USA |
| Conference Date | 1 August 1994 through 5 August 1994 |
| Country | United States |
| State | Iowa |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
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