Comparison of risk-based methods for bridge scour management

Scour is a significant cause of bridge failure, and resulting closures are likely to generate disruption infrastructure networks. The management scour-susceptible bridges challenge for improving transport resilience, but tends be heuristic qualitative. Such assessments often suffer from insufficient knowledge key factors require assumptions, which may increase their estimation relative uncertainty. Analysis publicly available technical documents reveals that various definitions “risk” adopted, as well multiple approaches applied. This paper has three objectives: (i) illustrate the concept risk in scour management; (ii) propose simple scoring system analyse existing risk-based manage scour; (iii) compare such on basis obtained scores. A sample nine containing assessment practices or was analysed using developed rating system.