Official

[Reproduction] August 1911, Kyobashi-ku, Tokyo Data provided: Kyobashi Library (The color of the river was colored blue in the materials and the main points were added)

However, as a reconstruction project after the Great Kanto Earthquake, as shown in the aerial photograph below, a new reconstruction canal "Kaedegawa-Tsukiji River Access Canal" was opened. With a total length of 290m, a width of 33m, and a depth of 1.8m, a ship with an engine was able to operate. With the completion of the connecting canal, Kaedegawa, Kyobashi and Sakuragawa rivers are connected to the Tsukiji River, making it convenient to boat transportation in the Nihonbashi area with the central wholesale market of Tsukiji and Shiodome Bridge.

　　Kaedegawa-Tsukiji River connecting canal around 1959 (Showa 34) (image provided by Kyobashi Library) (main points were added to the image)

In order to avoid the division of the Ginza, Tsukiji, and Shintomi districts due to the excavation of the connecting canal and the river became a three-pronged shape, the Y-shaped `` Miyoshi Bridge '' with an unusual shape as shown in the figure below was established in 1929 (Showa 4). It was built in December. The form is a three-story simple steel plate girder bridge with a bridge length of 23.98m x 3 and an effective width of 15m (9.0m on the road, 3m x 2 on the sidewalk).

Miyoshi Bridge around 1930 (Showa 5) (Image provided: Kyobashi Library) (image added to the direction of the river, etc.)

However, in the 1930s, the era of high growth and motorization entered, and ship transport declined, and the Tokyo Olympics were to be held in October 1964 (Showa 39). Therefore, the reclaim of the connecting canal was permitted in 1960 (Showa 35) for the construction of an expressway using the space on the river in principle, and in December 1962 (Showa 37), Shiodome-Honmachi was opened and became the capital expressway Toshin Beltway. According to the explanation board, "For 2004 and 5 years, a grove reflected on the waterside was adopted in the railing, the lighting was installed at the time of the erecting, and the sidewalk that was partially removed as a lamp on the expressway for a while. It was restored and the scenery was restored with a design that makes you feel the old taste. " Currently, Miyoshi Bridge is where the noise of the expressway resonates, but it may be a good idea to immerse yourself in history while thinking of the canal connecting Tsukiji and Nihonbashi at Miyoshi Bridge, with a view of the old scenery.

Reference: Guide to Edo and Tokyo, following the ruins of the river Kenji Sugawara　

　　　　　Dictionary to Know the Rivers in Japan and the World, Masao Suzuki