👉 Girderage is a type of bridge that uses a series of parallel, overlapping plates to create a continuous overhang. Each plate is supported by two or more girder spans, which are typically made from steel or concrete and span from 20-60 feet high. The girder spans can be used to reinforce the structure and increase its stability, while also providing support for pedestrians and vehicles on the bridge. Girderage has been used in many types of bridges throughout history
