Kachidokibashi is a bridge that spans the Sumida River and connects Tsukiji and Kachidoki. It was completed in 1940 as a means of transportation instead of "Kachidoki's handover". It has a structure in which the central part jumps up so as not to hinder the navigation of the ship, and was called "the best movable bridge in the East". The name "Kachidoki" was given to commemorate the fall of Port Arthur in the Russo-Japanese War. Opening and closing was suspended at the end of 1970 due to the disappearance of large vessels and increased traffic volume.
I've watched the movie "Kachidokibashi" about this Kachidokibashi. This movie is not a so-called entertainment movie, but a documentary film (planned by Tokyo, produced by the Japan Society of Civil Engineers and the Civil Engineering Technology Video Committee). The details of the comparison of the shape of the bridge, the mechanism of jumping up, etc. were explained in detail. The video that became the source of this movie is a 5-36-second silent movie planned and produced by the Civil Engineering and Culture Film Committee of the Japan Society of Civil Engineers in 1940.
Recently, "infrastructure tourism" has come to the spotlight. I felt that the fact that valuable video materials like this are left for the infrastructure that supports our lives close to us could attract more social attention.
