The effects and the impact of bridge scours that are the major reasons for bridge failure and the need to evaluate bridge scouring for the protection of bridges are discussed. Bridge scour is the erosion of soil due to water flow around bridge supports. It is necessary for all DOT to evaluate the bridges for scour and subsequently develop a plan of action for the categories that requires attention. Different types of bridge scours occur due to the changes in the river natural equilibrium. The scour engineering includes prediction, monitoring, and countermeasures. Countermeasures consist of designing and implementing a measure which will prevent the development of scour. A series of International Conferences has been organized every two years to help mitigate the scour problem world wide and provide an updated record of scour knowledge. The cooperation among the geotechnological engineer, the hydraulic engineer, and structural engineer helps to enter into the scour mitigation process.
