The opened the initial section of the Chūō Line from
Shinjuku Station to
Tachikawa Station in 1889. The company then extended the line both westward and eastward (towards Tokyo) until it was nationalised in 1906. The
Japanese Government Railways (JGR) then continued to extend the line, reaching Shiojiri the same year, and Tokyo (at ) in 1908. The JGR also built the line from Nagoya, the first section opening in 1900, with the lines connecting in 1911. The Table below gives the section opening dates. In 1904, the section between
Iidamachi Station (formerly located between Suidōbashi Station and Iidabashi Station) and Nakano Station was the first urban electric railway in Japan using 600 V DC. Electrification was extended in 1919 and 1922, was increased to 1,200 V DC when extended to Tokyo in 1927, boosted again to 1,500 V DC in 1929, and reached Kofu in 1931. Electrification from the Nagano end was commissioned in sections from 1966, and the entire line was electrified by 1973.
Notes: • The section between Okaya Station and Shiojiri Station is the new route that replaced the old route opened on June 11, 1906, by JGR. • Station names in parentheses are original names. • Stations marked † are now closed. • Prior to the connection of the East Line and the West Line in 1911, the section between Shiojiri Station and Miyanokoshi Station belonged to the East Line.
Former connecting lines • Mitaka Station: A line to a
Nakajima Aircraft factory opened in 1942, and was closed in 1945. In 1950, the factory site was used to build a sports stadium. The line from Mitaka to reopened on 14 April 1951, but was closed again on 1 November 1959. • Kokubunji Station: A line was opened in 1910 to haul gravel from the Tamagawa. It closed in 1914 due to flood damage, but was reopened in 1916 after being rebuilt by the Japanese Army. On 26 May 1920, the line was absorbed into JNR, but operations were suspended from 1 December 1921. A extension to the Tokyo Racecourse opened on 1934. Services on the line were suspended from 1 October 1944, resuming from 24 April 1947. On 1 April 1973, the line to Tokyo Racecourse closed and the line was absorbed into the
Musashino Line. • Kofu Station: The Yamanashi Horse-drawn tramway opened its first gauge section in 1898, and by 1904 had opened two lines (to Katsunuma and Fujikawa) totaling . In 1930, the Katsunuma Line was closed, and the other line was closed beyond Kai-Aoyagi, from Kofu. The company renamed itself the Yamanashi Electric Railway, regauged (to 1,067 mm) and electrified the line at 600 V DC, and operated it until 1962. • Sakashita Station: The gauge Sakagawa Line was opened to Maruno by the Hisaka River Railway in 1926. A passenger service was operated to Okuya. The Forest Service opened a line connecting at Maruno the same year, and a branch from Okuya that operated from 1933 until 1958. In 1944, the Forest Service took over the Sakagawa line, operating it until 1961, when the entire line closed. • Nakatsugawa Station: The Kitaena Railway operated the Enaden Line to Tsukechi, electrified at 600 V DC, from 1924 until 1978. At Tsukechi, it transshipped timber from a gauge forest railway with an "main line" and a and two branch lines operated from 1932 until 1959. • Ena Station: The Iwamura Electric Railway operated a line electrified at 600 V DC to its namesake town between 1906 and 1935. A line to the site of Oi dam was opened in 1922 to transport construction materials. Upon the dam's completion, the line was sold to the Kita-Ena Railway. but it closed in 1934. • Tokishi Station: The Ogawa Railway opened a line to its namesake town between 1922 and 1924. The line was electrified at 1,500 V DC in 1950, and closed as a result of flood damage in 1972. • Yabuhara Station: The Ogiso Forest line operated for an unknown period. • Agematsu Station: The Otaki Forest Railway operated between 1911 and 1975. • Nojiri Station: The Nojiri Forest Railway operated for an unknown period. • Tajima Station: The Kasahara Railway opened a line to its namesake town in 1928. Passenger services ceased in 1971, and the line closed in 1978.
Proposed connecting lines • Chino Station: The Saku Railway, which had built the line from Komoro on the
Shinetsu Line to
Koumi, proposed to build a line from Tanaka on the Shinetsu Line to this station. The company was nationalised before construction started, and
JGR connected the Koumi line to the Chuo Main Line in 1935, making this proposal redundant.
Accidents On September 12, 1997, a
Super Azusa limited express bound for Matsumoto collided with a
201 series local train that failed to stop at a red signal while passing through Ōtsuki Station. ==References==