Vermont Bridge Scour Rating Analysis: Looking Toward Utilizing Geomorphic Stream Data

TitleVermont Bridge Scour Rating Analysis: Looking Toward Utilizing Geomorphic Stream Data
Publication TypeConference Paper and Presentation
Year of Publication2014
AuthorsAnderson, I, Dewoolkar, MM, Rizzo, DM, Huston, DR
EditorAbu-Farsakh, M, Hoyos, LR
Conference NameGeo-Congress 2014Geo-Congress 2014 Technical Papers
Date Published2014/02
PublisherAmerican Society of Civil Engineers
Conference LocationAtlanta, Georgia, Reston, VA
ISBN Number978-0-7844-1327-2

Scour is the leading cause of bridge failure throughout the United States and elsewhere. Reliable scour ratings and methods for estimating the potential for scour can be effective tools in predicting and mitigating scour damage to bridges. The Vermont Agency of Transportation (VTrans) rates every bridge in the state for susceptibility to scour-type failure following the Federal Highway Administration's National Bridge Inventory guidelines. The scour rating is largely bridge and site specific and currently does not account for larger-scale stream geomorphic characteristics. In a complementary effort, the Vermont Agency of Natural Resources (VTANR) performs detailed geomorphic assessments of streams and rivers; more than 2,000 stream miles have already been assessed. This additional stream geomorphic data could prove to be useful in the scour assessment of bridges. This paper uses VTANR's geomorphic observations made around bridges and VTrans' scour ratings to explore preliminary correlations for assessment of scour potential of Vermont bridges.

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