The Düsseldorf–Elberfeld railway was built from 1838 to 1841 by the Düsseldorf-Elberfeld Railway Company (Düsseldorf-Elberfelder Eisenbahn-Gesellschaft, DEE), which had been established for this purpose. It was taken over by the Bergisch-Märkische Railway Company (Bergisch-Märkische Eisenbahn-Gesellschaft, BME) in 1857 and a continuous second track was built by 1865.[2]
The biggest challenge in the construction of the line was dealing with the climb between Erkrath and Hochdahl. The line has a gradient of 3.33% and rises 82 m in about 2.5 km. For more than one hundred years, this was the steepest main line in Europe. For many years trains had to be hauled by cable, originally driven by a stationary steam engine. A few months later haulage by cable attached to a stationary steam engine was changed to haulage by cable attached via pulleys to a locomotive running downhill on an additional track. With the duplication of the remainder of the line in 1865, the steep section of line became three-track, until the electrification of the line in 1963. The third track was rebuilt in 1985, as part of the additional third track built for the planned S-Bahn line. In 1926, cable haulage on the incline was replaced by bank engines.
Current situation
Between Gruiten junction and the Düsseldorf-Gerresheim station the long distance line is only single track. Regional Express lines RE 4 Wupper-Express and RE 13 Maas-Wupper-Express run on this line, stopping only at Düsseldorf, Vohwinkel and Wuppertal. S-Bahn line S 8 services runs on the parallel two-track S-Bahn line.
References
^Eisenbahnatlas Deutschland [German railway atlas] (in German) (Updated ed.). Cologne: Schweers + Wall. 2020. pp. 140–142. ISBN978-3-89494-149-9.