# Kyūdai Main Line

The Kyūdai Main Line (久大本線, Kyūdai-honsen) is a railway line in Kyushu, Japan, operated by the Kyushu Railway Company (JR Kyushu). It connects Kurume Station, Kurume in Fukuoka Prefecture and Ōita Station, Ōita in Ōita Prefecture. It is also known as the Yufu Kōgen Line.
The line crosses the whole of Kyushu, approximately paralleling the Chikugo River and its tributary the Kusu River near Kurume, and along the Ōita River close to Ōita. It also traverses popular tourist resorts such as Hita (known as Little Kyoto) and spa resorts around Yufu.

## Stations

| Station | Station | Distance (km) | Transfers | Location | Location |
| Kurume | 久留米 | 0.0 | Kagoshima Main Line, Kyushu Shinkansen | Kurume | Fukuoka |
| Kurume-Kōkōmae | 久留米高校前 | 3.4 | | Kurume | Fukuoka |
| Minami-Kurume | 南久留米 | 4.9 | | Kurume | Fukuoka |
| Kurume-Daigakumae | 久留米大学前 | 6.8 | | Kurume | Fukuoka |
| Mii | 御井 | 8.0 | | Kurume | Fukuoka |
| Zendōji | 善導寺 | 12.6 | | Kurume | Fukuoka |
| Chikugo-Kusano | 筑後草野 | 15.7 | | Kurume | Fukuoka |
| Tanushimaru | 田主丸 | 20.8 | | Kurume | Fukuoka |
| Chikugo-Yoshii | 筑後吉井 | 26.4 | | Ukiha | Fukuoka |
| Ukiha | うきは | 30.0 | | Ukiha | Fukuoka |
| Chikugo-Ōishi | 筑後大石 | 33.0 | | Ukiha | Fukuoka |
| Yoake | 夜明 | 39.1 | Hitahikosan Line (No service since July 2017 due to rainstorm damage, was replaced by bus rapid transit in August 2023) | Hita | Ōita |
| Teruoka | 光岡 | 45.2 | | Hita | Ōita |
| Hita | 日田 | 47.6 | | Hita | Ōita |
| Bungo-Miyoshi | 豊後三芳 | 49.4 | | Hita | Ōita |
| Bungo-Nakagawa | 豊後中川 | 55.3 | | Hita | Ōita |
| Amagase | 天ケ瀬 | 59.5 | | Hita | Ōita |
| Sugikawachi | 杉河内 | 63.6 | | Kusu | Ōita |
| Kita-Yamada | 北山田 | 67.8 | | Kusu | Ōita |
| Bungo-Mori | 豊後森 | 73.2 | | Kusu | Ōita |
| Era | 恵良 | 77.3 | | Kokonoe | Ōita |
| Hikiji | 引治 | 80.7 | | Kokonoe | Ōita |
| Bungo-Nakamura | 豊後中村 | 83.1 | | Kokonoe | Ōita |
| Noya | 野矢 | 88.2 | | Kokonoe | Ōita |
| Yufuin | 由布院 | 99.1 | | Yufu | Ōita |
| Minami-Yufu | 南由布 | 102.5 | | Yufu | Ōita |
| Yunohira | 湯平 | 109.6 | | Yufu | Ōita |
| Shōnai | 庄内 | 114.5 | | Yufu | Ōita |
| Tenjinyama | 天神山 | 118.1 | | Yufu | Ōita |
| Onoya | 小野屋 | 119.6 | | Yufu | Ōita |
| Onigase | 鬼瀬 | 124.6 | | Yufu | Ōita |
| Mukainoharu | 向之原 | 127.7 | | Yufu | Ōita |
| Bungo-Kokubu | 豊後国分 | 131.7 | | Ōita | Ōita |
| Kaku | 賀来 | 133.9 | | Ōita | Ōita |
| Minami-Ōita | 南大分 | 136.6 | | Ōita | Ōita |
| Furugō | 古国府 | 138.9 | | Ōita | Ōita |
| Ōita | 大分 | 141.5 | Nippō Main Line, Hōhi Main Line | Ōita | Ōita |

## History

In 1915, the Daito Railway Co. opened the 22 km Oita - Onoya section. The company was nationalised in 1922, and westerly extensions were undertaken in stages from 1923 until Amagase was reached in 1933. The Kurume - Chikugoyoshi opened in 1928, and easterly extensions to Amagase opened between 1931 and 1934.
CTC signalling was commissioned over the entire line in 1984, and freight services ceased in 1987.

### Typhoon damage

In 2012, a landslide disrupted services for 6 weeks.
On 5 July 2017, torrential rainfall washed out the bridge over the Oita River between Chikugo Oisha and Teruoka, resulting in the closure of the section. According to the Japanese language Wikipedia article, the line was fully re-opened on 14 July 2018.

### Previous connecting/transfer lines

* Era Station: the 27 km Miyanoharu Line to Higo-oguni opened between 1937 and 1954. Freight services ceased in 1971, and the line closed on 1 December 1984.
* Kurume Station: the 46 km 3 ft (914 mm) gauge Chigoku Line to Mameda opened between 1904 and 1916, and was electrified at 600 V DC in 1919. It had three short branch lines (1 to 4 km long). The entire system closed in 1929.