The Ludendorff Bridge was originally built during World War I as a means of moving troops and logistics west over the Rhine to reinforce the Western Front. The bridge was designed by Karl Wiener, an architect from Mannheim. It was long, had a clearance of above the normal water level of the Rhine, and its highest point measured . The bridge was designed to be defended by troops with towers on each bank with machine gun slits in the towers. The bridge carried two railway tracks and a pedestrian walkway. During World War II, one track was planked over to allow vehicular traffic.