Itsukaichi Line

The Itsukaichi Line (五日市線, Itsukaichi-sen) is a railway line operated by East Japan Railway Company (JR East) in Tokyo, Japan. It links Musashi-Itsukaichi Station in the city of Akiruno with Haijima Station in the city of Akishima. From there, some trains travel through to Tachikawa Station via the Ōme Line, and a very few continue from Tachikawa along the Chūō Line to Tokyo Station. This line can only accommodate trains of 4- or 6-car lengths.

Itsukaichi Line
JC
An E233 series EMU crossing the Tama River between Kumagawa and Higashi-Akiru stations
Overview
Native name五日市線
TypeHeavy rail
LocaleTokyo
TerminiHaijima
Musashi-Itsukaichi
Stations7
Operation
Opened1925
Operator(s)JR East
Technical
Line length11.1 km (6.90 mi)
Track gauge1,067 mm (3 ft 6 in)
Electrification1,500 V DC overhead catenary
Operating speed85 km/h (53 mph)
Route map

Services
A Shinjuku-bound Holiday Rapid Okutama (E233 series EMU) at Haijima Station

Itsukaichi Line Local

Local trains stop at all stations between Musashi-Itsukaichi and Haijima.

Through services

The Itsukaichi Line, at times, runs through services along the Ōme and Chūō Rapid lines. All through services into the Itsukaichi Line stop at every station on this line.

  • Ōme - Itsukaichi Line through service: Some Itsukaichi Line operate through service to the Ōme Line via Haijima. They operate between Musashi-Itsukaichi and Tachikawa.
    • Chūō - Ōme - Itsukaichi Line through service: At rush hours, few Chūō Line trains run through services between Tokyo and the Itsukaichi Line via Haijima. These services are always joined with another through service train, which couples / decouples at Haijima. During morning rush, some trains from Musashi-Itsukaichi on the Itsukaichi Line, and another train from Ōme on the Ōme Line, or from Hakonegasaki / Komagawa on the Hachiko Line, couple at Haijima, and head for Tokyo. During evening rush, the reverse occurs.

Holiday Rapid Akigawa
See also: Holiday Rapid Okutama

Holiday Rapid Akigawa services run on weekends on this line. See the article for more information.

Stations

All stations are located in Tokyo, and all services stop at every station.

No. Station Japanese Distance (km) Transfers Location
Between
stations		 Total
JC55 Haijima 拝島 - 0.0
Akishima
JC81 Kumagawa 熊川 1.1 1.1   Fussa
JC82 Higashi-Akiru 東秋留 2.4 3.5   Akiruno
JC83 Akigawa 秋川 2.2 5.7  
JC84 Musashi-Hikida 武蔵引田 1.5 7.2  
JC85 Musashi-Masuko 武蔵増戸 1.3 8.5  
JC86 Musashi-Itsukaichi 武蔵五日市 2.6 11.1  

An extension, via a switchback, formerly operated to Musashi-Iwai Station. It closed to passenger traffic in 1971 and to freight in 1982.

History
Looking from Musashi-Itsukaichi Station towards Musashi-Masuko Station

The Itsukaichi Line was built by the Itsukaichi Railway in 1925. In 1930, all sections (Tachikawa - Haijima - Musashi-Itsukaichi - Musashi-Iwai) were opened. There were two competing railways between Tachikawa and Haijima: the Ōme Electric Railway (now the Ōme Line) and the Itsukaichi Railway. In 1940, the Itsukaichi Railway was taken over by the Nambu Railway, becoming the Nambu Railway Itsukaichi Line. In 1944, Nambu Railway was nationalized and this line became the JGR Itsukaichi Line. At the same time, the section of the line between Tachikawa and Haijima was deemed non-essential and closed. However, the Tachikawa - Musashi-Uenohara and Musahi-Uenohara - Nishi-Tachikawa sections of the former Nambu Railway are still used by Chūō Main Line and Nambu Line trains traveling to and from the southern area of Tachikawa Station.

Chronology
  • 24 April 1925: Itsukaichi Railway opens between Haijima (temporary) and Itsukaichi (6.6 mi, 10.62 km) stations. Haijima (temporary), Higashi-Akiru, Nishi-Akiru, Masuko, and Itsukaichi stations open.
  • 15 May 1925: Extension from Haijima (temporary) Station to Haijima Station opens; Haijima (temporary) Station closes.
  • 16 May 1925: Masuko Station renamed Musashi-Masuko Station.
  • 1 June 1925: Itsukaichi Station renamed Musashi-Itsukaichi Station.
  • September 20, 1925: Musashi-Itsukaichi - Musashi-Iwai section opens; Okuno, Musashi-Iwai stations open.
  • 1 July 1926: Tamagawa Station (freight only) opens.
  • 1 April 1930: Distance markers changed from miles to kilometres.
  • 4 April 1930: Construction of Byōinmae Station authorized.
  • 13 July 1930: Tachikawa - Haijima extension opens; Musashi-Uenohara, Gouchi, Musashi-Fukushima, Minami-Nakagami, Miyazawa, Ōgami, Musashi-Tanaka, Minami-Haijima stations open.
  • 28 May 1931: Kumagawa Station opens.
  • 8 December 1931: Musashi-Tanaka - Haijima-Tamagawa freight branch (1.6 km) opens; Haijima-Tamagawa Station (freight only) opens. Tamagawa Station is renamed Musashi-Tamagawa Station.
  • 3 October 1940: Line taken over by Nambu Railway, becomes Itsukaichi Line. Musashi-Tamagawa Station closes.
  • 1 April 1944: Line is nationalized. Byōinmae Station renamed Musashi-Hikita Station. Musashi-Uenohara, Miyazawa, and Musashi-Tanaka stations close. Origin of freight branch (Musashi-Tanama - Haijima-Tamagawa) moved to Minami-Haijima Station (+1.4 km). Distance between Musashi-Itsukaichi and Musashi-Iwai shortened by 0.1 km.
  • 11 October 1944: Tachikawa - Haijima section of Main Line and Minami-Haijima - Haijima-Tamagawa section of freight branch close. Gouchi, Musashi-Fukushima, Minami-Nakagami, Ōgami, Minami-Haijima, Haijima-Tamagawa stations close.
  • 17 February 1961: Haijima - Musashi-Iwai section electrified at 1,500 V DC.
  • 1 February 1971: Ōkuno - Musashi-Iwai section of main line closes. Passenger service between Musashi-Itsukaichi and Ōkuno ceases; section becomes a freight branch. CTC installed in all sections.
  • 15 November 1982: Musashi-Itsukaichi - Ōkuno freight branch closes; all freight services discontinued.
  • 31 March 1987: Nishi-Akiru Station renamed Akigawa Station.
  • 1 April 1987: Following privatization of JNR line becomes part of JR East.
  • 18 March 2007: New E233 series trains enter service.
  • 15 March 2008: Semi-automated door operation starts year-round using E233 series rolling stock.
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References
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