This paper describes the validity confirmation of design to vibration control of Multi-direction Tuned Rolling Mass Damper (MTRMD) system by the vibration measurement of ITV pillars where MTRMD was given on site of city highway bridges. MTRMD system is the combination of the rotating ball and the hemisphere container which was made of the synthetic rubber. So far the simulation and experimental model tests have been done to estimate the abilities and the performance of MTRMD, the damping effect and the durability was confirmed by the vibration measurement for ITV pillars on site of city highway bridges in this time.
