Steel girder bridge, also known as Bailey Bridge. The Bailey Bridge consists of light, standardized truss unit components made of steel, including crossbeams, longitudinal beams, bridge decks, abutments, and connecting parts, which can be quickly assembled on-site 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.