Ōigawa Main Line
railway line in Shizuoka prefecture, Japan

The Ōigawa Main Line (大井川本線, Ōigawa honsen) is a Japanese railway line which connects Kanaya Station in Shimada, Shizuoka Prefecture with Senzu Station in Kawanehon, Haibara District, Shizuoka Prefecture. It is owned and operated by the private railway operator Ōigawa Railway.
In September 2022, the Ōigawa Main Line suffered substantial damage from Tropical Storm Talas. Rail services between Kawane-Onsen Sasamado and Senzu Station were suspended until further notice. In 2024, Oigawa Railway's president, Akira Torizuka, set a goal of restoring the full Ōigawa Main Line by 2029.
History
The Ōigawa Main Line began operations on June 10, 1927 as a private line for the Ōigawa Electric Company, to carry workers and materials upstream to facilitate dam construction. The single-track line was extended from Kanaya in stages, reaching it current terminal station of Senzu on December 1, 1931.
The entire line was electrified on November 18, 1949, with EMUs for the passenger services commencing then and freight operation by electric locomotives beginning in August 1951. Express train operations commenced in 1971.
The line runs through an isolated mountain area with no cities or towns, and has a very small population density.
Begin with the source’s own compact description: “Ōigawa Main Line” is railway line in Shizuoka prefecture, Japan. The dossier treats that line as a proposition to test through Ōigawa, Main and Line, not as a finished interpretation.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Apr 27, 2026. The linked authority identifier is Q8081507. 1 of 2 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 2022, 2024, 2029 and 1927.
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This entry incorporates text from “Ōigawa Main Line” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.