Box Girder - Specifications, Advantages & Disadvantages

Box girder bridges have several advantages over other bridge types. A box girder is formed when two web plates are joined by top and bottom flanges, forming a closed cell with high torsional stiffness. This stiffness allows box girders to be used for longer spans than other types. Their closed shape also improves load capacity and makes them suitable for wider bridges. Box girders provide maximum efficiency of materials and can accommodate utilities within. However, they require complex forming during construction.

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