Aargauischen Südbahn is a former railway company in Switzerland. From 1873 tt 1882 built the Schweizerische Centralbahn (SCB, pronunciation: ehs-seh-beh) together with the Schweizerischen Nordostbahn (NOB) connected with the Gotthardbahn. This Aargauischen Südbahn operated by the Centralbahn runs through Rupperswil , into Brugg and through Immensee . In 1902, the Schweizerische Centralbahn with the Aargauischen Südbahn became part of the Swiss Federal Railways.