Oensingen–Balsthal railway line

The Oensingen–Balsthal railway line is a standard gauge railway line in the canton of Solothurn in Switzerland. It runs 4.1 km from a junction with the Jura Foot Line at Oensingen to Balsthal. The Oensingen-Balsthal-Bahn owns the line; Swiss Federal Railways operates scheduled passenger services.

History
The Oensingen-Balsthal-Bahn opened the line between Oensingen and Balsthal on 17 July 1899. The line was electrified at in 1943.

Operation
Swiss Federal Railways operates the S22 on a half-hourly interval between Oensingen and Balsthal, with connections available at Oensingen to Olten, Biel/Bienne, and Zürich Hauptbahnhof. Major freight customers on the line include Swiss Quality Paper, KEBAG AG, and Von Roll.