The roadway itself was constructed on top of concrete slabs supported by steel girders. It comprises three spans of prestressed-concrete box girders, a total of long. Gusset plate is a plate for connecting beams and girders to columns. The bulkheads were braced to each other by longitudinal girders placed around their circumferences. Six rows of longitudinal stringer girders are arranged between cross girders. These concentrated loads are considered to act at the panel points of the Joist Girders. Two of four trolley guides, bolted and welded with the girders, were extensively damaged. Vertical girders (standards) were intersected by horizontal girders and cross-braced. The bridge consists of 32 m long box girders weighing 860 tons each. Small steel girders are rolled into shape. Its cables, towers, wires and girders were in play. The structure was to be made of wrought iron girders a nominal above the roadway. The Cutler patented guide frame dispensed with the horizontal girders using diagonal triangulated framing instead. With only the plate girders providing additional depth, the bridge's roadway section was also shallow. The scene then shifts to show emaciated rats leaping around corpse-laden steel girders.