Toyohashi Bridge is a historic bridge spanning the Ono River in Katori City, Chiba Prefecture. Locally, it is affectionately known as “Jaja-bashi,” a name inspired by the sound of water flowing down from the bridge.
The distinctive sound of the falling water has become an important part of the local landscape. In 1996, Toyohashi Bridge was selected as one of the 100 Soundscapes of Japan by Japan’s Ministry of the Environment.
The history of Toyohashi Bridge dates back to the Edo period. Originally, the structure was not a bridge but a wooden water channel called a toyo, which was built across the Ono River to carry irrigation water to the rice fields around Sawara.
As water flowed from the channel, it produced a distinctive “jaja-jaja” sound. This eventually gave rise to the local nickname “Jaja-bashi,” or “Splashing Bridge.” Over time, people began using the water channel as a crossing, and it gradually came to serve the function of a bridge.
During the Showa period, the original water channel was replaced by a concrete bridge. The bridge was subsequently renovated into its present form in 1992.
During the renovation, a water-flowing feature was installed to recreate the atmosphere of the old Edo-period “Jaja-bashi.” Today, water continues to flow from the bridge, recreating the characteristic sound that gave the bridge its nickname.
The water feature operates from 9:00 a.m. to 5:00 p.m., with water released approximately every 30 minutes, allowing visitors to experience the famous “Jaja” sound throughout the day.
Toyohashi Bridge has also received recognition for its historical and community value. It was awarded the 1994 Handmade Hometown Award in the category of “Roads Introducing the Hometown.”
The award recognizes projects that preserve local scenery and cultural heritage while making these resources accessible and attractive to visitors.
In 1996, Toyohashi Bridge was selected as one of the 100 Soundscapes of Japan by the Ministry of the Environment.
The program highlights distinctive sounds associated with local landscapes, culture, and natural environments. At Toyohashi Bridge, the gentle sound of water cascading from the bridge forms an integral part of the historic riverside scenery.
For visitors, listening to the flowing water while viewing the traditional buildings along the Ono River provides a particularly atmospheric experience.
The Ono River is a Class A river flowing through Katori City and forms part of the Tone River water system.
The river passes through the center of Sawara, where traditional buildings and historic merchant houses remain along its banks. This combination of water and historic architecture has made the riverside one of Katori City’s most recognizable tourist areas.
The Ono River played an important role in transportation and commerce from the Edo period onward. It was also used as a source of agricultural water, and various weirs and water channels were constructed to supply the surrounding rice-growing areas.
Toyohashi Bridge was one such facility, originally serving as an important irrigation structure that carried water from the Ono River toward the rice fields.
The area surrounding the Ono River, particularly central Sawara, retains numerous traditional buildings. The district has been designated as an Important Preservation District for Groups of Traditional Buildings, helping protect its historic streetscape.
Visitors can stroll along the river and see traditional merchant houses, shops, bridges, and other historic structures while experiencing the atmosphere of a former Edo-period commercial town.
The Ono River can also be explored by boat through the popular Koedo Sawara Boat Tour.
From the water, visitors can enjoy a different perspective of Sawara’s historic streets and traditional buildings lining the riverbanks. In spring, cherry blossoms add seasonal color to the scenery, with their reflections appearing on the surface of the river.
The Ono River is an important element of Sawara’s historic landscape, but it has also presented challenges related to flooding.
Heavy rainfall sometimes caused the river to overflow and flood parts of the town. To improve flood control and regulate the flow of water, a diversion channel was completed in 2004. This has significantly reduced the risk of flooding in the urban area.
Several bridges cross the Ono River, each serving an important role in local transportation and tourism. Some have become recognizable landmarks in the historic Sawara district.
Chukei Bridge is named after Ino Tadataka, the famous Japanese surveyor who lived in Sawara. Located in the center of the historic district, the bridge provides views of the Ono River and the traditional buildings along its banks.
It is also a popular place for photographs, particularly when capturing the combination of the river and historic townscape.
Kaun Bridge has an auspicious name meaning something like “opening good fortune.” The area around the bridge contains shops and historic buildings and is convenient for exploring the town on foot.
Fureai Bridge was named with the idea of encouraging interaction between local residents and visitors.
A park is located near the bridge, providing a pleasant place to take a break while exploring the riverside area.
Toyohashi Bridge, or Jaja-bashi, is one of the best-known bridges along the Ono River.
Its historic irrigation function has been recreated through the water feature that sends water flowing from the bridge. The water is released approximately every 30 minutes, allowing visitors to see and hear the characteristic “Jaja” water flow that has become a symbol of the bridge.
Toyohashi Bridge and the Ono River are approximately a 10-minute walk from JR East Sawara Station.
By car, the area is approximately 15 minutes from the Sawara-Katori Interchange on the Higashi-Kanto Expressway.
Visitors can also combine a walk through the historic district with a sightseeing boat tour along the Ono River.
The area around the Ono River is ideal for a leisurely walk, with historic buildings, traditional merchant houses, bridges, and riverside scenery concentrated within a relatively compact area.
Seasonal festivals and events are also held throughout the year. Among them, the Sawara Grand Festival in summer is one of the region’s most important traditional celebrations, featuring large festival floats parading through the historic streets.
Toyohashi Bridge is a distinctive historic landmark that represents the relationship between water, agriculture, transportation, and daily life in Sawara.
Originally constructed as an irrigation water channel during the Edo period, the structure eventually became a crossing used by local people. Its characteristic flowing-water feature was recreated in the modern bridge, preserving the atmosphere and sound associated with the historic “Jaja-bashi.”
The bridge is also part of the wider cultural landscape of the Ono River, where traditional buildings and merchant houses preserve the atmosphere of old Sawara. Walking along the river, listening to the sound of falling water, and taking a boat through the historic waterways offer different ways to experience this unique part of Katori City.
For travelers interested in historic Japanese towns, waterways, traditional architecture, and local culture, Toyohashi Bridge is a small but memorable landmark to include when exploring the historic streets of Sawara.