Mechanical equipment full set in the bascule bridge at Kachidoki-bashi

This movable bridge over the Sumida River connecting Tsukiji and Tsukishima opened in June 1940 and the distance between movable supports (51.6 m) is one of the longest in Japan. The weight of the movable girder is approximately 1,000 tons for each side. The counterweight (approx. 1,000 tons) is installed inside the bridge abutment, and the bridge is driven by a motor combined with tooth gears arranged at the center of gravity of the bridge abutment. With regard to the conversion to land carriage from transportation by ship, swinging operations ceased on November 29, 1970. The bridge is famous in terms of the tradition of efforts by Japanese engineers, the beauty of its configuration, its appearance in literary works, etc.