In this study, the method of estimating impact coefficient is studied by dynamic load test using the results of inspection for railway bridge that have few errors that may occur in case of running of trains because trains move on the railway bridge.

In general, the lateral resistant of bearing in a straight bridge is designed for lateral load such as wind or seismic forces. In this study, however, it is found that the cause of damage of bearings in a straight bridge adjacent to the curved road is the centrifugal force or the breaking force of the vehicle. Also, it is suggested that the repair method for the damaged bearings.

In general, the lateral resistant of bearing in a straight bridge is designed for lateral load such as wind or seismic forces. In this study, however, it is found that the cause of damage of bearings in a straight bridge adjacent to the curved road is the centrifugal force or the breaking force of the vehicle. Also, it is suggested that the repair method for the damaged bearings.

Numerical Analysis of corrugated-metal culvert is mainly related with corrugated shape, plate thickness, and load transmission mechanism, and these elements especially should be treated consistently in the analysis of 3-Dimensional analysis of behavior of skewed corrugated-metal culvert. And so, the modelling technic, 3-dimensional equivalent plate modelling, is required to be modified.