Guide
The Old Danjo Bridge (also known as Hachiman Bridge) is a historic iron bridge located in Tomioka, Koto City, Tokyo. It is officially designated as a National Important Cultural Property. Built in 1878 (Meiji 11) at the request of the Tokyo Prefecture, it is recognized as the oldest iron bridge in Tokyo. While relatively small in scale—measuring 15.2 meters in length and 2 meters in width—it serves as a vital piece of engineering history, preserving the architectural styles of the early Meiji era. Today, it forms a beautiful part of the scenic Hachimanbori Promenade.
The origins of this bridge date back to 1878, when it was constructed by the Ministry of Industry's Akabane Works. Originally, it spanned the Kaede River in Chuo City and was called "Danjo Bridge" due to the nearby residence of Danjo Shimada. During the Meiji era, it was a vital route connecting Bashakisen-mon to the Honjo and Fukagawa areas, serving as a symbol of Japan's rapid modernization and Westernization. Following the Great Kanto Earthquake and subsequent urban restructuring, the bridge was relocated to its current site in Tomioka. It was also renamed "Hachiman Bridge" after the adjacent Tomioka Hachiman-gu Shrine. In 1977, it was designated an Important Cultural Property, and in 1989, its technical significance was recognized when it received the "Civil Engineering Society Honor Award" from the Japan Society of Civil Engineers.
The most striking feature is its unique "bowstring truss" structure. The bridge utilizes a hybrid construction of cast iron for the arch members and wrought iron for the tension members, representing a crucial transitional period in engineering history from cast iron to wrought iron bridges. Visitors can also observe the exquisite craftsmanship in the details, such as the pin joints decorated with petal patterns resembling the imperial chrysanthemum crest. This level of aesthetic detail reflects the high level of craftsmanship and design pride of the early Meiji period.
Since the bridge is located along the Hachimanbori Promenade, it is accessible for strolls throughout the year. Visiting during daylight hours is highly recommended, as the bright light allows for a clear and detailed observation of the intricate ironwork and structural components. It is a perfect spot to enjoy the historical atmosphere alongside the surrounding water landscape.
Visitors can experience the bridge as a piece of living history. Walking along the surrounding promenade allows you to feel the footsteps of Japan's modernization as you transition from the Edo to the Meiji era. It is a wonderful site for those interested in the history of architecture, civil engineering, and the evolution of structural design.
The Old Danjo Bridge is situated in the historic Fukagawa and Tomioka areas of Koto City. Nearby landmarks include the venerable Tomioka Hachiman-gu Shrine and the scenic Hachimanbori canal. The area is also rich in cultural history, with various sites related to the birthplace of filmmaker Yasujiro Ozu, making it an excellent starting point for a historical walking tour.
As this is a public promenade and a historical monument, there is no admission fee. No cash or credit cards are required.
As this is an outdoor historical site, there are no dedicated English-speaking information desks on-site.
No advance reservations are required. You may view and pass through the area freely.
Since you will be walking along a promenade, comfortable walking shoes are recommended. Please dress appropriately for the season.
Photography of the bridge and the surrounding scenery is permitted. However, please be mindful of other pedestrians and do not obstruct the walkway.
The bridge is located within a public promenade; please check the local conditions for any steps or uneven surfaces.
As this is a National Important Cultural Property, please do not touch the structure or engage in any activities that could cause damage. Please be respectful of other visitors and local residents.