ASCE will be sunsetting the Civil Engineering Database (CEDB) in the coming months. We encourage you to start using the ASCE Library to perform content searches. In the ASCE Library, you can save your search results as well as receive email content alerts when new content relevant to your area of interest is published. Try it out today at https://ascelibrary.org.

 

Scour at a Bridge Over the Weldon River, Iowa

by Edward E. Fischer, U.S. Geological Survey, Iowa City, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

Contraction scour at the State Highway 2 bridge over the Weldon River in south-central Iowa was caused by a flood of record proportions on September 14 and 15, 1992. The peak discharge was 1, 930 cubic meters per second,which was 4 times the probable 100-year flood used to design the bridge, and resulted in road overflow. Contraction scour exposed the pier footings, but a subsurface layer of glacial clay apparently resisted additional vertical scour and caused the scouring process to move laterally. The embankment at the left abutment was eroded away, exposing 3 m of vertical abutment piling.

Subject Headings: Scour | Floods | Welding | Rivers and streams | Highway bridges | Piers | Hydraulic contraction | Iowa | United States

Services: Buy this book/Buy this article

 

Return to search