The Südbrücke, Mainz ("South bridge")[1] is a railway bridge on the Main Railway that connects Mainz, Rhineland-Palatinate, across the Rhine with Gustavsburg in Hesse.

As a result, a train ferry was established between Mainz and Gustavsburg, using two pontoons towed by paddle steamer to carry wagons across the Rhine.

In between 1860 and 1862, the south bridge was designed by the engineering works and iron foundry Maschinenfabrik und Eisengießerei J. F. Klett (later Maschinenfabrik Augsburg-Nürnberg - MAN) originating from Nuremberg.

Right of Rhine joined a long flood bridge with 28 other fields.

[2] At both bridgeheads were they equipped with scheduled by district architect Ignaz victims man Gothic gates and bridge towers, which were to serve in time of war to defend the bridge.