Abstract
In Japan, there is a discussion about the replacement or extension of the service life of the bridges built during the rapid economic growth period, which are now reaching the end of their planned service period. Under these circumstances, instead of corrective maintenance, regular visual inspections of the bridges are performed once every five years as preventative maintenance. Bridges with different environmental conditions are expected to have greatly different rates of deterioration. Therefore, depending on environmental condition and construction, deterioration advances in five years spans. In this study, association of bridge component damage was analyzed using regular inspection data for determination of timing for inspection. As the result of analysis, it was clear that the damage of concrete slab and rubber bearing was greatly related the damage of the bridge face construction which can be detected in usual inspection.
