This bridge is a parallel-chord bridge with a lower roadway and a double truss structure. Built according to the "Linville" system, it is unique in Southwest Germany. The double truss construction method was widely used for large and important bridges from 1860 onwards because this design combined the advantage of closely spaced joints with the possibility of precise structural calculations. The latter was not the norm in the early days of iron bridge construction. Unlike its larger counterparts, * Railway bridge over the Lek near Culemburg (NL) * Railway bridge over the Rhine between Düsseldorf and Neuss * Railway and road bridge over the Rhine between Mannheim and Ludwigshafen * Railway bridge over the Rhine near Wesel * Neckar Valley Viaduct near Stuttgart-Münster this bridge has not been altered or replaced. ...* * * * * * ** ****************************************************************************** Each of the two truss girders has 19 posts, with a strut extending outwards from each end post, its base resting on a bearing. A crossbeam is attached to the bottom of each post, supporting the roadway girders. Source: Information panel at the bridge