抄録
This paper presents results of an investigation of evaluating the bridges health degree of 54 bridges managed by Gifu Prefecture in Gifu City. Bridge health degree is statistically calculated with periodic inspection data conducted by Gifu Prefecture. This inspection results consist of many items and evaluate the state of bridge details, but a currently index is insufficient as one used to maintenance. Accordingly, the index is required that can evaluate overall of each bridge elements or entire bridge. So, this study aims to express health degree of bridge elements by one or two overall index with principal component analysis, and grasped relationship to calculated health index, age, specification, design standard and environmental condition by multiple regression analysis.
