In this study, a fundamental study on game theory (Nash bargaining solution) approach to the bridge maintenance planning is presented. When a bridge is repaired at appropriate time, the gain of the bridge is maximized. Annual budget forces the repair schedule to be slid, so balanced modification of the repair planning is searched. Each bridge is considered as a player, and the bridge group gain is maximized at the same time as pursuing the maximization of an individual gain by adapting Nash bargaining solution with proper utility function. Also, priority of the repair is shown by using properly the concaved utility function and the convex utility function.
