The lean or slide of a substructure due to an earthquake or a flood, and the deterioration of a bearing support mortar make the support conditions of the line bearing inappropriate. Since this inappropriate support contidtions cause the stress of the girder end which isn’t considered in the design, the load carrying capacity of the girder end could be decreaced. In this study, the load carrying capacity and the bukling behavior under the inappropriate support conditions of the line bearing were evaluated by conducting the loading experiment with the full scale specimens of a ribet deck girder.
