Ranking of basin hydrological parameters and hydraulic characteristics of the bridge in the flood potential for inspection of river bridges

River bridges are highly vulnerable due to their location in a dynamic aquatic environment and under a dynamic traffic environment. The main reason for the destruction of these stairs is mainly the occurrence of floods and related hydraulic problems. To deal with this issue and move towards infrastructure asset management, conducting hydraulic inspection of the bridge can be very effective in identifying vulnerabilities. In this paper, hydrological parameters of catchment characteristics, general hydraulic characteristics of bridges, hydraulic characteristics of bridge piers and backpacks that are effective in the event potential are proposed and ranked. These issues can be used in preparing a checklist for inspecting river bridges and finally prioritizing the risk of river bridges. Studies show that the total output of hydrological studies of the catchment is considered as an effective unit during the bridge inspection process and finally the risking of the bridge is prioritized, while the general characteristics of the bridge, the characteristics of the foundations and the characteristics of the backpacks are There are four effective units, five units and three units in bridge inspection and bridge risk prioritization, which express the importance of the mentioned cases in relation to the hydrological index of the catchment.