Kintetsu Nagano Line

The line had its origin in the Kayō Railway (河陽鉄道), a company whose aim was to link Osaka with the Minamikawachi region and to tap the pilgrim traffic bound for Mount Kōya. After first building the Kashiwara–Furuichi section that today forms the Domyoji Line and part of the Minami-Osaka Line, the Kayō Railway opened the stretch from Furuichi to Tondabayashi, along the old Higashi-Kōya-kaidō highway, on 14 April 1898. Its earliest trains were hauled by steam locomotives.

The Kayō Railway soon fell into financial difficulty, and the year after opening its line passed to the Kanan Railway (河南鉄道), which took over the route on 11 May 1899 and pushed it onward to the south. The extension was built in two stages in 1902: the section from Tondabayashi to Takidanifudō opened on 25 March, and the final stretch from Takidanifudō to Nagano Station — today's Kawachi-Nagano — opened on 12 December that year, completing the through line to the inland town.

In its first decades the line saw frequent changes to its smaller stations. Gakkōmae Station, the present Tondabayashi-nishiguchi, opened in 1904, and a cluster of new halts including Nishiura, Miyamae, Kawanishi and Shionomiya followed in 1911, several of them later closed and replaced. The operating company evolved as well: the Kanan Railway renamed itself the Osaka Railway (大阪鉄道) on 8 March 1919, the second company to bear that name.

The Osaka Railway then decided to build its own line running directly into central Osaka, branching away at Dōmyōji, and went on to open a route diverging at Furuichi toward Nara Prefecture — together the core of the present Minami-Osaka Line. As that new trunk took shape, the original line to Kawachi-Nagano was left as a branch, the present Nagano Line. The whole Furuichi–Nagano route was electrified at 1,500 V DC on 16 October 1923.

The line entered the Kintetsu fold through wartime consolidation. On 1 February 1943 the Kansai Express Railway (関西急行鉄道) absorbed the Osaka Railway, and the merger of the Kansai Express Railway with the Nankai Railway on 1 June 1944 created the Kinki Nippon Railway — Kintetsu — of which the Nagano Line has been a part ever since. Nagano Station was renamed Kawachi-Nagano on 1 April 1954, the Furuichi–Kishi section was doubled in 1957, automatic train stop (ATS) came into use in 1968, and the Kishi–Tondabayashi section was doubled in 1987.

In more recent years the line has been the subject of grade-separation work. A roughly 0.8-kilometre stretch around Kawanishi was elevated in 1982, and a longer programme to raise the Kishi–Tondabayashi section onto a viaduct was carried out in stages, the up line being elevated on 4 June 2022 and the down line on 10 June 2023. Through the same period the line adopted successive fare-card systems, ending with the nationally interoperable IC cards PiTaPa, ICOCA and Suica.

Today the Nagano Line operates as a busy commuter branch whose trains, mostly running as semi-expresses, almost all continue through onto the Minami-Osaka Line to and from Ōsaka Abenobashi, with a few turning back at Tondabayashi. Throughout the single-track section, trains pass at Takidanifudō, the only crossing station, for nearly the whole operating day. In September 2024 the line's services had to be reduced because of a shortage of drivers, a difficulty shared by many regional Japanese railways.

• 189814 April: the Kayō Railway opens the Furuichi–Tondabayashi section, the origin of the line, worked by steam.
• 189911 May: the Kanan Railway takes over the financially troubled Kayō Railway's line.
• 190225 March: Tondabayashi–Takidanifudō opens. 12 December: Takidanifudō–Nagano (present Kawachi-Nagano) opens, completing the line.
• 190412 October: Gakkōmae Station, the present Tondabayashi-nishiguchi, opens.
• 191115 August: Nishiura, Miyamae, Kawanishi and Shionomiya stations open.
• 19198 March: the Kanan Railway is renamed the Osaka Railway (the second company of that name).
• 192316 October: the Furuichi–Nagano route is electrified at 1,500 V DC. 28 December: Asahigaoka Station opens.
• 19331 April: stations are renamed — Taishiguchi-Kishi to Kishi, Gakkōmae to Tondabayashi-nishiguchi, and Hatakeyama to Kawanishi.
• 19431 February: the Kansai Express Railway absorbs the Osaka Railway.
• 19441 June: the merger of the Kansai Express Railway with the Nankai Railway forms the Kinki Nippon Railway (Kintetsu); the line becomes a Kintetsu line.
• 19541 April: Nagano Station is renamed Kawachi-Nagano Station.
• 195718 October: the Furuichi–Kishi section is double-tracked.
• 196826 September: automatic train stop (ATS) comes into use on the line.
• 197420 July: Asahigaoka Station, between Kishi and Tondabayashi, is closed.
• 198212 September: a roughly 0.8 km stretch around Kawanishi Station is elevated.
• 198725 October: the Kishi–Tondabayashi section is double-tracked.
• 20224 June: the up line of the Kishi–Tondabayashi grade-separation project is elevated; the down line follows on 10 June 2023.
• 2024September: the line's services are reduced because of a shortage of drivers.