Abstract
This report documents the development and testing of a field-deployable, knowledge-based decision support system that assists bridge inspectors by acquiring, cataloguing, storing, and retrieving information necessary for the evaluation of a bridge for the presence of scour. More importantly, the expert system provides an independent scour risk evaluation of the site conditions, evaluates the bridge and substructure elements for failure risk, and provides both explanations of the scour risks and suggestion for scour mitigation. (A)