To improve railway resilience against earthquakes, we verify and apply a developed support system to evaluate the effects of seismic countermeasure, focusing on the lost transportation volume of the railway networks. The system calculates the recovery process of the transportation volume which decreases after an earthquake, using optimization calculation by which the lost transportation volume is to be minimized. This makes us evaluate quantitatively the effect of the countermeasures. In addition, a different recovery process can be relatively evaluated. In this study, first we evaluate the performance of the system based on past earthquakes. Then comprehensively compare the effects of several seismic countermeasures such as structural and operational countermeasures. This paper describes that the evaluated recovery process of the lost transportation volume with the developed system is useful to implement strategic seismic countermeasures.