History
Nishiyashiki Station began on 1 September 1926 as the Nishiyashiki Signal Box, an additional facility on the existing Nippō Main Line opened by Japanese Government Railways. Located in the city of Usa, Ōita Prefecture, the signal box was upgraded to a full station handling passenger traffic on 1 March 1947 under Japanese National Railways. The Usa–Nishiyashiki section was double-tracked on 20 July 1966 and the Nishiyashiki–Tateishi section on 28 September 1966, with the Kokura–Kōzaki electrification reaching the station on 1 April 1967. Baggage handling ended on 1 October 1970 and the station became unstaffed. Control passed to JR Kyushu at the privatisation of JNR on 1 April 1987.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-22.
Notes
The downbound track is laid slightly higher than the upbound track for about two-thirds of the section between Nishiyashiki and Usa, a 15-permille gradient that is the only such configuration on the entire Nippō Main Line.