Keisei Kanamachi Line

The line's origins lie in a human-powered tramway, the Taishaku Jinsha Railway. After Nippon Railway opened Kanamachi Station in 1897, the number of worshippers heading for the nearby temple of Shibamata Taishakuten grew, and in 1899 the Taishaku Jinsha Railway was founded to serve them, beginning operation between Shibamata and Kanamachi the same year. This original line, which opened on 17 December 1899, was built to a narrow 610 mm gauge; it was double-tracked, with loops at the Shibamata and Kanamachi termini for turning the cars. There were 64 carriages, each seating six passengers and normally pushed along by a single person. In 1907 the company changed its name to the Taishaku Jinsha Tramway.

In 1909 the Keisei Electric Tramway — the present-day Keisei Electric Railway — was founded to carry pilgrims to Naritasan and Shibamata Taishakuten, and it planned a route through Shibamata toward Kanamachi. Because that route overlapped with the human-powered line, the Taishaku Jinsha Tramway transferred its tramway licence for the Shibamata–Kanamachi section to Keisei on 27 April 1912. Later the same year, on 3 November 1912, Keisei opened the section from Magarikane (now Keisei-Takasago) to Shibamata as a branch; it was electrified from the outset and built to 1,372 mm gauge.

On 26 June 1913 Magarikane Station was renamed Takasago Station, and on 21 October 1913 the former Taishaku Jinsha Tramway alignment was rebuilt and the Shibamata–Kanamachi section reopened as an electric railway, ending the era of hand-pushed cars. The line's two endpoints took their present names in 1931, when on 18 November Takasago became Keisei-Takasago and Kanamachi became Keisei-Kanamachi. On 20 February 1945 the whole line was reclassified from a tramway under the Tramways Act to a railway under the Local Railways Act.

A major change came on 17 November 1959, when the entire line was regauged from 1,372 mm to 1,435 mm standard gauge, matching the rest of the Keisei network and allowing through-running with it. For decades the line carried a mixture of services: shuttle trains within the line, trains that ran through to Keisei-Ueno over the Main Line, and a smaller number that ran through via the Oshiage Line to Oshiage. On New Year's Eve from 1987 to 1998, overnight services even ran through from the Keikyū network as far as Keisei-Kanamachi, reflecting the line's role in carrying visitors to Shibamata Taishakuten at the start of the year.

In December 2006 Keisei announced a plan to elevate the Kanamachi Line in the vicinity of Keisei-Takasago — ahead of, and separately from, the elevation of the Main Line — to keep the opening of the Narita Sky Access Line in 2010 from lengthening the time the area's level crossings stayed closed. The elevation works were completed on 5 July 2010. From that day a single-island, one-face one-track elevated platform (track 5) at Keisei-Takasago came into use with its own dedicated ticket gates, the line became operationally single-track throughout, and a timetable revision turned every service into a shuttle running back and forth within the line. Whereas previously a single train had usually worked the three-station line outside the rush hours, two trains could now run and pass each other at Shibamata.

Today every train on the Kanamachi Line is a local service, formed of four cars, shuttling between Keisei-Takasago and Keisei-Kanamachi at roughly ten-minute intervals in the weekday peaks and fifteen-minute intervals in the daytime, crossing at Shibamata outside the earliest and latest hours. On 26 November 2022 driver-only (one-man) operation began on daytime trains. As the access route to Shibamata Taishakuten, the line still runs special trains for the all-night New Year service and over the first three days of January, and the temple, the nearby Katsushika Shibamata Tora-san Museum and the Yagiri-no-watashi ferry crossing keep Shibamata, its only intermediate station, busy with tourists alongside everyday commuters.

• 189917 December: the human-powered Taishaku Jinsha Railway opens between Shibamata and Kanamachi at 610 mm gauge.
• 1907The operator is renamed the Taishaku Jinsha Tramway.
• 191227 April: the Taishaku Jinsha Tramway transfers its Shibamata–Kanamachi tramway licence to the Keisei Electric Tramway (now Keisei Electric Railway).
• 19123 November: Keisei opens the Magarikane (now Keisei-Takasago)–Shibamata branch, electrified from the start at 1,372 mm gauge.
• 191326 June: Magarikane Station is renamed Takasago Station.
• 191321 October: the former Taishaku Jinsha Tramway alignment is rebuilt and the Shibamata–Kanamachi section reopens as an electric railway, ending human-powered operation.
• 193118 November: Takasago is renamed Keisei-Takasago and Kanamachi is renamed Keisei-Kanamachi.
• 194520 February: the whole line is reclassified from a tramway under the Tramways Act to a railway under the Local Railways Act.
• 195917 November: the entire line is regauged to 1,435 mm standard gauge.
• 200930 June: a Keisei centenary commemorative special, using a 3300 series set in revival livery, runs to Keisei-Kanamachi.
• 20105 July: elevation works near Keisei-Takasago are completed; a single-track elevated platform (track 5) with separate ticket gates opens, the line becomes operationally single-track throughout, and all trains become within-line shuttles crossing at Shibamata.
• 202226 November: driver-only (one-man) operation begins on daytime trains.