Miyoshibashi 三吉橋, a three-way bridge built in 1929 that spanned the Tsukiji river and which now (in its current form) spans a highway underpass. See: Canals of the Ginza: floating through time on Tokyo’s central waterways 東京江戸「水の都」
A similar bridge exists today in Koto-ku, Tokyo: Onagigawa Clover Bridge 小名木川クローバー橋. See: Koto-ku walking map: Onagigawa & Higashi-Ojima
the tokyo files 東京ファイル 