The company was also given a concession to connect the new line with the left Rhine railway with Bonn by means of a train ferry.

The right bank railway was extended north to Neuwied in 1869 and on 27 October 1869 to Oberkassel and the train ferry wharf.

The train ferry line turned to the left after Oberkassel station to reach the bank.

Part of this track still exists, but it is no longer fit for operations; it lies beside the Bad Godesberg-Bonn railway near Bereich Straßburger Weg and Kaiserstraße for a short section before the Hauptbahnhof.

A shipyard was built on the Oberkassel bank, which used the former train ferry track to connect to the mainline.