Ohmi Railway Yōkaichi Line

The line originated with the Konan Railway, a private company that applied in May 1911 to connect the town of Hachiman in Gamō District with the town of Yōkaichi in Kanzaki District. Although the Ohmi Railway, which already served Yōkaichi, filed a competing application along the same route, the Railway Bureau rejected Ohmi's bid and granted a light-railway licence to the earlier applicant on 30 September 1911. The Konan Railway was formally established on 18 April 1912.

Konan had intended to build to the 762 mm narrow gauge, but the need to interchange traffic with the national railways and the Ohmi Railway forced a change to 1,067 mm, driving construction costs above the original estimate and leaving the company short of funds. After bringing in Zensuke Fujii as president and securing further investment, Konan opened its first section, between Shin-Hachiman (today's Ōmi-Hachiman) and Yōkaichi-guchi (today's Shin-Yōkaichi), on 29 December 1913. Shin-Hachiman was renamed Ōmi-Hachiman in 1919, and Yōkaichi-guchi became Shin-Yōkaichi the same year.

To resist the expansion of Keihan capital into Shiga, the Konan Railway was absorbed in 1927 into Biwako Railway Steamship, a firm formed that year by the merger of the Ōtsu Electric Tramway and the Taiko Steamship company. When Keihan Electric Railway in turn absorbed Biwako Railway Steamship in 1929, however, it showed no interest in the isolated former Konan line. The line was therefore transferred to the Yōkaichi Railway, founded by Fujii, on 1 April 1929; under the wartime corporate-consolidation policy it was finally merged into the Ohmi Railway on 1 March 1944, at which point it took the name Yōkaichi Line.

A branch once extended north from the line toward a military airfield. The Yōkaichi Railway opened a line from Shin-Yōkaichi to Hikōjō (Airfield) Station — later renamed Misono — on 1 October 1930, crossing over the Ohmi Railway Main Line on an embankment between Shin-Yōkaichi and Yōkaichi-naka stations. The branch was suspended on 1 August 1948 and formally abolished on 25 September 1964; part of its former trackbed survives today as a pedestrian and cycle path.

The main line itself was extended and electrified after the war. On 1 January 1946 the short Shin-Yōkaichi–Yōkaichi section opened, giving the line its present western terminus at Yōkaichi, and the Ōmi-Hachiman–Shin-Yōkaichi section was electrified; the remaining Shin-Yōkaichi–Yōkaichi stretch was electrified on 2 August 1946. Freight operations on the line were discontinued on 1 November 1986, and a nonstop Rapid service between Ōmi-Hachiman and Yōkaichi was introduced on 30 March 1998.

In its later years the line has been recognised both for its heritage and for its precarious finances. It received the nickname "Man'yō Akane Line" on 16 March 2013, and on 17 December that year the line marked the centenary of its opening with a ceremony at Ōmi-Hachiman. On 1 April 2024 the Ohmi Railway network, including the Yōkaichi Line, shifted to a publicly-owned, privately-operated model of vertical separation, under which the rail facilities are held by the Ohmi Railway Line Management Organisation established by Shiga Prefecture and the municipalities along the line.

• 191130 September: a light-railway licence is granted to the Konan Railway (the Railway Bureau having rejected a competing Ohmi Railway application along the same route).
• 191218 April: the Konan Railway is formally established.
• 191329 December: the Konan Railway opens its first section, Shin-Hachiman (now Ōmi-Hachiman)–Yōkaichi-guchi (now Shin-Yōkaichi); the line, originally planned for 762 mm gauge, is built to 1,067 mm.
• 1919Shin-Hachiman Station is renamed Ōmi-Hachiman (11 March) and Yōkaichi-guchi Station is renamed Shin-Yōkaichi (1 July).
• 192715 May: Biwako Railway Steamship absorbs the Konan Railway.
• 19291 April: Biwako Railway Steamship — itself absorbed by Keihan Electric Railway that year, which had no interest in the isolated line — transfers the Ōmi-Hachiman–Shin-Yōkaichi line to the newly founded Yōkaichi Railway.
• 19301 October: the Yōkaichi Railway opens a branch from Shin-Yōkaichi to Hikōjō (Airfield) Station, later renamed Misono.
• 19441 March: under the wartime corporate-consolidation policy, the Ohmi Railway merges the Yōkaichi Railway; the line is named the Yōkaichi Line.
• 19461 January: the Shin-Yōkaichi–Yōkaichi section opens and the Ōmi-Hachiman–Shin-Yōkaichi section is electrified at 1,500 V DC; the Shin-Yōkaichi–Yōkaichi section is electrified on 2 August.
• 19481 August: the Shin-Yōkaichi–Misono branch is suspended.
• 196425 September: the suspended Shin-Yōkaichi–Misono branch is formally abolished.
• 19861 November: freight operations on the Ōmi-Hachiman–Shin-Yōkaichi section are discontinued.
• 199830 March: a nonstop Rapid service between Ōmi-Hachiman and Yōkaichi is introduced; Tarōbō Station is renamed Tarōbōgū-mae on 1 April.
• 201316 March: the line receives the nickname "Man'yō Akane Line"; on 17 December a ceremony at Ōmi-Hachiman marks the centenary of its opening.
• 20241 April: the Ohmi Railway network, including the Yōkaichi Line, shifts to publicly-owned, privately-operated vertical separation, with rail facilities held by the Ohmi Railway Line Management Organisation.