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Ōito Line

Ōito Line
JR East E127 series EMU between Uminokuchi and Inao stations
Type Heavy rail
Locale Nagano, Niigata prefectures
Termini Matsumoto
Stations 42
Opening 1915
Owner JR East, JR West
Line length 105.4 km (65.5 mi)
Track gauge 1,067 mm (3 ft 6 in)
Electrification 1,500 V DC (Matsumoto - Minami-Otari)
Route map

The Ōito Line (大糸線 Ōito-sen) is a railway line in Japan which connects Matsumoto Station in Nagano Prefecture to Itoigawa Station in Niigata Prefecture. There are two operators on the line: East Japan Railway Company (JR East) operates the section south of Minami-Otari Station in Otari, Nagano Prefecture, and West Japan Railway Company (JR West) operates the remaining section.


  • Route data 1
  • Stations 2
    • JR East section 2.1
    • JR West section 2.2
  • History 3
    • Former connecting lines 3.1
    • Service disruptions 3.2
  • References 4
  • See also 5

Route data

  • Operators, services:
  • Stations: 25
    • JR East: 34
    • JR West: 8 including Itoigawa, excluding Minami-Otari
  • Double-tracked section: None
  • Electrification: Matsumoto - Minami-Otari (1500 V DC)
  • Railway signalling:
    • Matsumoto — Itoigawa: Automatic Train Stop, S-type


JR East section

All stations are within Nagano Prefecture.
Station Japanese Distance(km) Rapid Transfers Location
Matsumoto 松本 - 0.0 Shinonoi Line
Matsumoto Electric Railway Kamikōchi Line
Kita-Matsumoto 北松本 0.7 0.7  
Shimauchi 島内 1.9 2.6  
Shimatakamatsu 島高松 1.2 3.8  
Azusabashi 梓橋 1.4 5.2   Azumino
Hitoichiba 一日市場 1.6 6.8  
Nakagaya 中萱 1.6 8.4  
Minami-Toyoshina 南豊科 2.0 10.4  
Toyoshina 豊科 1.0 11.4  
Hakuyachō 柏矢町 2.8 14.2  
Hotaka 穂高 2.0 16.2  
Ariake 有明 2.2 18.4  
Azumi-Oiwake 安曇追分 1.5 19.9  
Hosono 細野 2.9 22.8   Matsukawa, Kitaazumi District
Kita-Hosono 北細野 1.0 23.8  
Shinano-Matsukawa 信濃松川 2.2 26.0  
Azumi-Kutsukake 安曇沓掛 1.6 28.6   Ōmachi
Shinano-Tokiwa 信濃常盤 2.3 30.9  
Minami-Ōmachi 南大町 3.1 34.0  
Shinano-Ōmachi 信濃大町 1.1 35.1  
Kita-Ōmachi 北大町 2.1 37.2  
Shinano-Kizaki 信濃木崎 2.2 39.4  
Inao 稲尾 2.2 41.6  
Uminokuchi 海ノ口 1.3 42.9  
Yanaba 簗場 3.4 46.3  
ヤナバスキー場前 1.6 47.9  
Minami-Kamishiro 南神城 4.9 52.8   Hakuba, Kitaazumi District
Kamishiro 神城 2.4 55.2  
Iimori 飯森 1.5 56.7  
Hakuba 白馬 3.0 59.7  
Shinano-Moriue 信濃森上 1.9 61.6  
Hakuba-Ōike 白馬大池 3.8 65.4   Otari, Kitaazumi District
Chikuni 千国 3.4 68.7  
Minami-Otari 南小谷 1.4 70.1

JR West section

Station Japanese Distance(km) Transfers Location
Minami-Otari 南小谷 - 70.1 Otari, Nagano
Nakatsuchi 中土 4.0 74.1  
Kita-Otari 北小谷 4.4 78.5  
Hiraiwa 平岩 5.5 85.0   Itoigawa, Niigata
Kotaki 小滝 6.8 91.8  
Nechi 根知 3.6 95.4  
Kubiki-Ōno 頸城大野 4.9 100.3  
Himekawa 姫川 1.9 102.2  
Itoigawa 糸魚川 3.2 105.4 Hokuriku Main Line


The section between Matsumoto and Shinano-Ōmachi was built between 1915 and 1916 by the Shinano Railway (信濃鉄道 Shinano Tetsudō), which electrified the line in 1926. The company was nationalised in 1937 and was not the same entity as the present Shinano Railway.

The rest of the line was built by the Japanese Government Railways (JGR) and the Japanese National Railways (JNR) between 1929 and 1957. The Shinano-Ōmachi - Minami Otari section was electrified between 1959 and 1967. CTC signalling was commissioned in 1983, and freight services ceased in 1987.

When JNR was privatized on 1 April 1987, the line was assigned to the present two operators.

Former connecting lines

  • Azumi-Oiwake station - The Ikeda Railway Co. opend a 7km line to Kita-Ikeda, electrified at 1500 VDC, in 1926. The electrification was decommissioned in 1937 and diesel locomotion introduced, but the line closed the following year.

Service disruptions

The Nakatsuchi - Shinano-Moriue section was closed for 2 months in 1939 due to landslides.

In July 1995 torrential rainfall triggered damage that resulted in the Minami Otari - Kotaki section being closed until November 1997.

The Minami Otari - Itoigawa section was closed for 2 months in 2012 due to avalanche risk, and the same section closed for 2 months in 2013 due to the collapse of a seawall at the latter location.


This article incorporates material from the corresponding article in the Japanese WorldHeritage

See also

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