Badische Hauptbahn
It was opened in 1870 as an alternative to the Baden Mainline and runs mostly broadly parallel with the Rhine Valley Railway, which runs from Mannheim to Heidelberg, Karlsruhe, Rastatt, Offenburg and Basel. The Rhine Railway originally ran from Graben-Neudorf to Karlsruhe via a more westerly route than the current route, which is now named the Hardt Railway and is partly used by lines S 1 and S 11 of the Karlsruhe Stadtbahn. In 1895 the current route was opened to Karlsruhe and extended to Rastatt and Haguenau. The section over the border along the Rhine in France was closed in 1966.