Koraibashi Bridge spans the Higashi-Yokobori River. Said to have existed since the Toyotomi era, the name of this bridge is said to have come from the site of the ancient Koraikan (Koma no Murotsumi), which welcomed envoys from the Korean Peninsula. Another theory is that this area was a trading base with the Korean Peninsula during Toyotomi Hideyoshi's Osaka town division. During the Edo period, the bridge served as a government bridge, with a shogunate notice board (a bulletin board displaying shogunate laws and regulations) erected at its west end. Koraibashi Street was bustling with activity, with establishments like the Mitsui Kimono Store (now Mitsukoshi Department Store) and the Mitsui Money Exchange. During the Keicho era (1596-1614), the bridge was said to have been a magnificent structure with a spire. The Meiji government placed a milestone marker on Koraibashi Bridge, marking the beginning and end of roads, and designated it as the starting point for calculating road distances in western Japan. In 1870, it was replaced with the first iron bridge in Osaka imported from Britain, and people at the time were amazed by the spectacular sight of it shining black under the gas lamps, leading to it being affectionately nicknamed "Kurogane Bridge." The current bridge is a reinforced concrete arch bridge rebuilt in 1929, and the balustrades and main pillars modeled after the tower house that stood at the west end of the bridge tell of its history.