Baden Mainline

Baden main line
AVG car no. 821 on the Baden main line at Bruchsal in 2005
Overview
Native name	Badische Hauptbahn
Technical
Line length	412.7 km (256.4 mi)
Track gauge	1,435 mm (4 ft 8 1⁄2 in) standard gauge
Electrification	15 kV/16.7 Hz AC catenary
Route map

The Baden main line (German: Badische Hauptbahn) is a German railway line that was built between 1840 and 1863. It runs through Baden, from Mannheim via Heidelberg, Karlsruhe, Offenburg, Freiburg, Basle, Waldshut, Schaffhausen and Singen to Constance (Konstanz). The Baden Mainline is 412.7 kilometres long, making it the longest route in the Deutsche Bahn network and also the oldest in southwest Germany. The section between Mannheim and Basle is the most important northern approach to the Swiss Alpine passes, whilst the section between Basle and Constance is only of regional significance. The stretch from Karlsruhe to Basle is also known as the Rhine Valley Railway (Rheintalbahn) and the Basle–Constance section as the Upper Rhine Railway (Hochrheinstrecke).

The Upper Rhine Valley has been an important trade route from Central Europe to Switzerland and Italy since Roman times. With the development of railways in the early 1830s, considerations arose of building a railway from Mannheim to Basel in order to handle the movement of people and goods faster and cheaper than was possible with carts, especially as the Upper Rhine south of Mannheim only allowed restricted navigation. George Stephenson’s locomotive and the opening of the line between Liverpool and Manchester was first discussed in the Baden Parliament by the priest and liberal politician Gottlieb Bernhard Fecht (1771–1851) in the autumn of 1831. He was accused of being ahead of his time and his proposal received no support. The first real initiative for a railway was made in 1833 by the Mannheim businessman Louis Newhouse, but just like the suggestion of Friedrich List, it was not supported by the Baden government.