In the near future, most of infrastructures that were built in the period of high growth of economy will be needed to repair. Therefore a large amount of budget will be required for the maintenance. Asset management is indispensable in order to use a budget efficiently. In this study, value evaluation of bridges in a local city was carried out. Values of bridges are considered as the sum of a material value and social value. A material value is analyzed by the cost of repairing with time progress. Social value was computed as user cost in road network model analysis.