Steel temporary bridge, also known as Bailey Bridge. The Bailey Bridge is composed 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 domestically as prefabricated highway steel bridges, it is a type of steel bridge but not identical to a standard steel bridge. The Bailey Bridge is highly representative, characterized by its modular design, ease of use, and wide application.