Shinbashi and Shiodomebashi were two bridges that spanned the outer moat of Edo Castle's defensive works. A culvert was subsequently formed when the moat was filled in, and all that remains of the Shinbashi bridge is a lone pylon with its name inscribed. The Shiodomebashi bridge was situated to the east of Shinbashi, it spanning the moat and joining together Kobiki-chō 7-chōme and Shibaguchi Shinmachi.