Historical Changes to Steel Bridge Design, Composition, and Properties

Federal Highway Administration2021PDFTech ReportOcel, Justin M.United States. Federal Highway Administration. Office of Infrastructure Research and DevelopmentUnited States. Federal Highway Administration. Office of Infrastructure Research and DevelopmentUnited StatesSteel bridgesBridge designWeldingBoltingSteel bridgesBridge designWeldingBoltingSteel propertiesHistoric steelFHWA-HRT-21-020This report presents a succinct view of historical steel bridge design with an emphasis on the evolution of the steel itself, including a summary of American Society for Testing and Materials and American Association of State Highway Officials/American Association of State Highway and Transportation Officials steel specifications used in steel bridges and their tensile, chemical, and impact energy requirements. A timeline of major design changes, such as welding and bolting, composite design, and fatigue design, is presented.105