was closed down in several stages and where it is still open it is used mainly for freight operations. As part of the merger that created the University of Duisburg-Essen there were brief but inconclusive discussions on creating a direct transport link on the route from Duisburg-Neudorf via Speldorf, Mülheim Hauptbahnhof and Heißen to Essen Nord, connecting the two campuses. Meanwhile, the overall line between Speldorf and Mülheim Hauptbahnhof was dismantled. In Essen, the line has been interrupted several times, the bridges over Segeroth-Strasse and Hans-Böckler-Strasse were demolished and the new Berthold-Beitz-Boulevard was built on the line’s embankment. The Essen-Nord station and its two signal boxes have been decommissioned and demolished and in its place the new university district has been built. The main line from Essen-Nord to Essen-Kray Nord has been closed along with Essen-Nord station and signals have been removed from the station platforms at Essen-Kray Nord station. Essen-Kray Nord and the Goldschmidt plant can still be accessed via Essen-Nord. The Rhenish line east of Essen-Kray station running towards Bochum has also been demolished. Thus the railway bridge of the Rhenish line over the A40 in Bochum-Stahlhausen has already been removed during the upgrading of the autobahn. The easternmost section of the line between Dortmund Dorstfeld (high level) and Dortmund Süd station has been upgraded for the S-Bahn S 4 and extended to Dortmund Lütgendortmund and is served by the S-Bahn at 20-minute intervals. From Dortmund Süd, the S 4 uses the line to Welver of the former Royal Westphalian Railway Company (Königlich-Westfälische Eisenbahn, KWE) to Unna-Königsborn and then the Fröndenberg–Kamen railway to Unna station. The low level of Dortmund-Dorstfeld station is connected by S-Bahn services from Dortmund Hauptbahnhof: line S 1 runs to Essen Hauptbahnhof on the Bergisch-Märkische line and line S 2 runs to Herne station on the line to Dortmund-Mengede. Notes External links NRW rail archive of André Joost: Original line: Connecting line to the CME trunk line: Rhine-Ruhr S-Bahn (new): Other sites: Railway lines in North Rhine-Westphalia Railway lines opened in 1866 1866 establishments in Prussia