A new structure, called central strutted beam supported rigid frame bridge was constructed in Okazaki city. In designing this bridge, vibration mode in longitudinal and transverse direction was occurred. Therefore this study had vibration test in this bridge subjected to running vehicle, in the aim of grasping vibration characteristics. The analytical model was made by finite element method, and simulation of eigen value and dynamic response analysis was carried out. Though this bridge has bending and torsional complicated vibration mode, the natural frequency of the proposed analytical model are in good agreement with the measurement ones when test vehicle is running.
