Steel prefabricated bridge, also known as Bailey Bridge. The Bailey Bridge consists of lightweight, standardized truss units made of steel, including crossbeams, longitudinal beams, bridge decks, abutments, and connecting elements, which can be rapidly assembled on-site using installation equipment into truss girder bridges suitable for various spans and loads. Known as prefabricated highway steel bridges domestically, it is a type of steel bridge but not identical to it. The Bailey Bridge is highly representative, with its main feature being modularity, ease of application, and widespread usage.