Bridge construction involves specialized equipment, expertise, and safety measures. Temporary support systems (falsework) support the bridge during construction. Formwork for concrete structures must be designed for construction loads. Shoring extends from ground level supporting the formwork and concrete weight. The bridge must remain open or be safely detoured during construction. Traffic control and public safety are major considerations. Precast concrete bridge components are manufactured off-site and assembled on-site. Erection planning prevents traffic disruption. Steel bridge construction may use cantilever methods extending the bridge gradually. Temporary bracing prevents lateral movement during construction. Cable-stayed bridges use temporary cable support during construction. Main cables are installed and tensioned incrementally. Suspension bridges require massive anchorages and temporary support during main cable installation. Launch methods push or pull bridge sections into position. Bridge deck systems must accommodate expansion and contraction. Bearings allow movement without damaging supports. Expansion joints allow movement at transitions. Waterproofing of bridge decks prevents deterioration of reinforcement. Deck rehabilitation extends bridge life. Inspection and maintenance programs identify deterioration early.