Sanjo Bridge. Sanjo Ohashi is a bridge in Kyoto, Kyoto Prefecture, Japan. It spans the Kamo River as part of Sanjo-dori. It is well known because it served as the ending location for journeying on both the Nakasendō and the Tōkaidō; these were two of the famous Five Routes for long distance travelers during the Edo period in Japan's past. It is unclear when this bridge was first built, but there are records of Toyotomi Hideyoshi orders for it to be repaired in 1590, as well as one of the original giboshi. The current concrete bridge, which includes two lanes for driving and a walking path on either side, was built in 1950.