The highway bridge decks which directly support heavy truck load have deteriorated caused by material factors, environment and wheel load etc. Recently damages of RC decks of steel bridges have been increased and some of decks have been replaced to precast PC decks. In this paper, deteriorated RC decks which were about 40years in service, have damages such as cracks and spalling of concrete, were conducted punching shear tests and wheel load running tests to verify load bearing capacity and fatigue durability. As the result, appropriate evaluation of RC decks can be achieved by not only visual inspection but also internal damage information was indicated.
