AASHTO GSBTW-2, Guide Design Specifications for Bridge Temporary Works, Second Edition (2017), provides design requirements for falsework, formwork, and temporary retaining structures used in bridge construction. Section 1 covers scope, related publications, definitions, and metric conversions. Section 2 addresses falsework in detail, including drawings, materials and manufactured components, loads and load combinations, and design for deflection, slenderness, overturning and sliding. The same section treats steel beam grillages, proprietary shoring systems, traffic openings, and foundations, including footings, pile foundations, and foundations for heavy-duty shoring systems. Loads are handled under both load and resistance factor design and allowable stress design. Section 3 turns to formwork, beginning with materials and form accessories. The specifications are intended for temporary works design engineers, contractors, and agency engineers who review bridge construction schemes.