This study presents the interactive response between adjacent bridges; especially for the case of a long-span bridge and a small bridge. Different natural periods between two bridges cause the large relative displacement at their joints. The three dimensional earthquake response analysis was carried out considering the effect of the displacement limitation of the shoes and the aseismatic connector. The results showed that the limited device of the long-span bridge affected the response of the adjacent small bridge. The relative displacement response between the long-span bridge and the small bridge increased, when the shoes of the small bridge had been broken.