Fault tree analysis of bridge scour

Peggy A. Johnson

Research output: Contribution to conferencePaperpeer-review

4 Scopus citations


The wide range of complexities involved in the processes of scour and channel instability at bridges have limited the ability to mathematically or physically model these processes. The additional complexity of mitigation structures at bridges and other unique features further limits the use of existing models. In order to consider the processes and interactions of contraction scour, local scour, meander migration, bank instability, bed degradation, and mitigation measures, a systematic method is needed to examine consequences of the various processes and interactions. Fault tree analysis is a systematic method of identifying faults and their interactions in a complex system. In this paper, the use of fault tree analysis to determine critical paths to failure and to calculate the probability of failure due to both scour and channel instability is demonstrated.

Original languageEnglish (US)
Number of pages5
StatePublished - 1998
EventProceedings of the 1998 International Water Resources Engineering Conference. Part 2 (of 2) - Memphis, TN, USA
Duration: Aug 3 1998Aug 7 1998


OtherProceedings of the 1998 International Water Resources Engineering Conference. Part 2 (of 2)
CityMemphis, TN, USA

All Science Journal Classification (ASJC) codes

  • General Earth and Planetary Sciences
  • General Environmental Science


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