Japan Heritage story
Yatsushiro's stonemasons: the bridge builders of Japan
八代を創造（たがや）した石工たちの軌跡
Kumamoto still has many stone arch bridges, and most are said to be the work of stonemasons from Yatsushiro. Trained on huge land reclamation projects, these masons went on to build bridges across Japan, from Tokyo's Mansei Bridge to the Tsujun Bridge aqueduct.
Key facts
- Theme
- Castles, Sea and waterside, Mines and minerals
- Era
- Edo
- Region
- Kanto, Kyushu & Okinawa
- Official name in Japanese
- 八代を創造（たがや）した石工たちの軌跡
- Official subtitle in Japanese
- ～石工の郷に息づく石造りのレガシー～
- Official area (in Japanese)
- 熊本県（八代市）
The story
Yatsushiro was once marshes and mudflats, called the poorest land in the domain. From the Edo period to the early Showa era, huge reclamation projects created about two-thirds of today's fertile Yatsushiro Plain, and local stonemasons cut, carried and laid the stone for its sluice gates and canals. Their leader, Iwanaga Sangoro, was honoured with a family name, rare for a craftsman then, and was invited to Satsuma to build great arch bridges.
Arch bridge skills were passed down in the mountain village of Taneyama. Because villagers paid for their own bridges, the masons cut the arch stones with care but used natural stone for the walls, making strong bridges on small budgets. Masons such as Hashimoto Kangoro went on to build Mansei Bridge in Tokyo and the Tsujun Bridge aqueduct, and Yatsushiro masons are said to have worked on about a quarter of the more than 2,000 stone arch bridges built in Japan.
What to see
- Kasamatsu Bridge: one of Yatsushiro's largest arch bridges, over 20 m, still in daily use.Google Maps 笠松橋 八代 (opens in a new tab)
- Osaya sluice gate: a massive stone gate from the Edo-period reclamation.Google Maps 大鞘樋門 (opens in a new tab)
- Shiragatake natural stone bridge: the natural arch that may have inspired the masons.Google Maps 白髪岳天然石橋 (opens in a new tab)
- Yatsushiro Castle ruins: castle walls of local limestone.Google Maps 八代城跡 (opens in a new tab)
Plan your trip with the Kumamoto prefecture guide and see more history.
Good to know
- Yatsushiro still has 46 stone arch bridges, from tiny ones under 5 m to spans over 20 m.
- In the Tomachi hills, look for stone-walled terraced fields and twisted stone lanterns.
- The reclaimed plain grows more igusa, the rush used for tatami mats, than anywhere else in Japan.
Questions travellers ask
Why is Yatsushiro called the home of stonemasons?
Its masons trained on local reclamation works and built stone arch bridges all over Japan, so many famous masons came from here.
Which famous bridges did Yatsushiro masons build?
Among others, Mansei Bridge in Tokyo and the Tsujun Bridge aqueduct in Kumamoto.
Where it comes from
More heritage stories from the same area
- Hakone Hachiri: walking the Edo stone road over Hakone
- Hitoyoshi-Kuma: 700 years under one clan
- Hizen: the birthplace of Japanese porcelain
- Iki, Tsushima and Goto: Japan's border islands
- Mount Takao and Hachioji, the city of silk
- Sakura, Narita, Sawara and Choshi: the Edo closest to the airport
- The Kikuchi River: 2,000 years of rice farming
- The Murakami Kaizoku: sea lords of the Geiyo Islands
- The Sugar Road: sweets along the Nagasaki Kaido
- Yokosuka, Kure, Sasebo and Maizuru: Japan's naval port cities
Local foods from the same area
Crafts from the same area
Sources
We checked the facts on this page against these sources.