Totsuna Bridge: A Taisho-Era Steel Arch Bridge Spanning Centuries of History

Standing gracefully over the Surikami River in the heart of Iizaka Onsen, Totsuna Bridge (十綱橋, Totsuna-bashi) is one of Japan's oldest surviving steel arch bridges. Completed in 1915 during the Taisho period, this elegant structure serves as the iconic landmark of one of Tohoku's most beloved hot spring towns. With its delicate braced rib arch design and over a century of continuous use, Totsuna Bridge is not merely a feat of engineering — it is a living testament to the deep connection between infrastructure and community in Japan.

Registered as a National Tangible Cultural Property in 2020 and recognized as a Civil Engineering Heritage site by the Japan Society of Civil Engineers in 2004, Totsuna Bridge invites visitors to walk across a piece of history while enjoying the atmospheric scenery of Iizaka Onsen's riverside townscape.

A Bridge with Roots in the Heian Period

The history of bridge-building at this location stretches back over a thousand years to the Heian period. According to tradition, the earliest crossing here consisted of wooden planks supported by ten wisteria vine ropes (十条の藤の綱) strung between the two banks — giving the bridge its enduring name, "Totsuna" (Ten Ropes). This ancient crossing was celebrated in classical Japanese poetry and is mentioned in the imperial anthology Senzai Wakashū, compiled in the late 12th century.

In 1189, during Minamoto no Yoritomo's campaign against the Northern Fujiwara clan, the local castle lord Satō Motoharu ordered the bridge destroyed as a defensive measure for the Battle of Ishinazaka. For centuries afterward, no bridge stood at this site, and travelers — including the famous haiku poet Matsuo Bashō during his 1689 journey through Iizaka — relied on ferryboats known as "Totsuna no Watashi" to cross the river.

From Suspension Bridge to Steel Arch

The modern history of Totsuna Bridge begins in 1875, when a second-generation suspension bridge was constructed at the site. Modeled after the iron-wire suspension bridge built at the Imperial Palace in 1870, this 69-meter bridge was supported by ten iron cables. However, the structure suffered repeated damage and deterioration, eventually collapsing during a major flood in August 1910.

Construction of the current third-generation bridge began in April 1914, and it was completed in September 1915 at a cost of 35,685 yen. This steel upper-deck two-hinged braced rib arch bridge spans 52 meters with a roadway width of 7.3 meters. The bridge's distinctive appearance comes from its use of angle steel assembled into a braced rib arch with vertical members — creating a refined, lattice-like silhouette that is both structurally efficient and aesthetically striking.

Over the decades, the bridge has undergone several renovations. A major reinforcement in 1967 converted the arch members from I-beam to box-beam cross-sections. The arch was painted in its signature pale green in 1979, and a widening project in 2008 modernized the railings and lighting. Since 2009, the bridge and its arches have been illuminated at night, transforming it into one of the most photogenic spots in the onsen town.

Why Totsuna Bridge Is a Registered Cultural Property

Totsuna Bridge was designated as a Nationally Registered Tangible Cultural Property (建造物) on April 3, 2020. The registration recognizes the bridge as one of the oldest surviving steel arch bridges from the Taisho era in Japan. Its braced rib arch construction, using angle steel assembled into a delicate framework of diagonal braces and vertical members, represents an important chapter in the history of modern bridge engineering in Japan.

The bridge had already received recognition as a Civil Engineering Heritage site from the Japan Society of Civil Engineers (JSCE) in 2004, acknowledging its significance as a historic civil engineering structure. These dual designations highlight the bridge's value both as an engineering milestone and as an integral part of the cultural landscape of Iizaka Onsen.

Highlights and Things to See

Totsuna Bridge offers visitors a unique combination of architectural beauty, historical depth, and scenic charm.

Surrounding Attractions

Totsuna Bridge sits at the heart of Iizaka Onsen, one of Tohoku's most historic hot spring resorts. Often celebrated alongside Beppu in the famous saying "Beppu in the West, Iizaka in the East," this onsen town offers abundant attractions within easy walking distance.

Access and Practical Information

Totsuna Bridge is exceptionally easy to reach. From JR Fukushima Station, take the Fukushima Kotsu Iizaka Line (nicknamed "Ii-den") to the terminus at Iizaka Onsen Station — a pleasant 20-minute ride through scenic countryside. The bridge is visible immediately from the station plaza, just a one-minute walk away.

By car, the bridge is approximately 10 minutes from the Fukushima-Iizaka Interchange on the Tohoku Expressway. From Tokyo Station, Fukushima Station can be reached in approximately 90 minutes via the Tohoku Shinkansen, making Iizaka Onsen a feasible day trip or weekend getaway from the capital.

The bridge is a public road and can be crossed freely at any time. There is no admission fee. The nighttime illumination makes evening visits particularly rewarding.