One of the bridges that was built over the Nishiyokobori River, it was originally called ``Tondamachi Bridge'' and later ``Tobashi'', and the name of Shinano can be seen in records from the Genroku era (1688-1704). At that time, the length of the bridge was 13 ken and 1 shaku (approximately 25.9 m), and the width was 2 ken (approximately 3.9 m). The Nishiyokobori River is said to have been dug by Shichiroemon Nagase, the first generation lumber merchant, and flows north-south through the center of Osaka from the Tosabori River to the Dotonbori River. Along the coast were various merchant houses, especially lumber merchants and pottery merchants. With the opening of the streetcar system in 1913, the Shinano Bridge was replaced with a three-span (2 piers in the middle) simple steel girder iron bridge (23.0m long, 22.0m wide). , Nishiyokohori River was reclaimed from 1964 to 1971 for the construction of the Hanshin Expressway, and it disappeared. Currently, only the stone monument remains.