Grand Duchy of Baden State Railway
The project received approval from state authorities in both countries. The Baden government was not able to quickly implement construction, as it was busy with other railways (mainly the Black Forest Railway). To accelerate construction, the city of Karlsruhe, under Mayor Wilhelm Florentin Lauter, offered to build the Baden section to Eppingen as directed with the Grand Duchy of Baden State Railway to operate the line, initially paying rent and later buying the line by instalments.