US Geological Survey


Date of this Version



Published in Hydraulic Engineering: Saving a Threatened Resource—In Search of Solutions: Proceedings of the Hydraulic Engineering sessions at Water Forum ’92. Baltimore, Maryland, August 2–6, 1992. Published by American Society of Civil Engineers.


The Federal Highway Administration has mandated that all bridges in the Federal Aid System crossing over water be evaluated for scour susceptibility. The United States Geological Survey and the Texas Department of Transportation (TXDOT) have initiated a multi-year, multi-phase program to develop scour evaluation and analysis procedures that will allow TXDOT to quickly and efficiently evaluate some 11,000 bridges crossing over water in the state.