ABSTRACT
In this study, we run fatigue test by using wheel running machine with original road bridge decks which commonly used for 50 years and road bridge decks which was replaced 7 years ago from practical RC road bridge decks after fifty years’ service life used under the situation of deicing salt. In the result, fatigue durability of re-placement road bridge decks remarkably fall since evaluation based on wheel running machine and S-N rela-tionship, remaining life of original road bridge decks was assumed to be close to the fatigue limit state.
