Arch bridge theory

Arch bridge theory explains how these structures efficiently transfer weight and loads. When weight is applied to the center or spans of the arch, the arch directs this force outward along its curved shape toward the supports or foundations at each end. This action converts vertical loads into horizontal compression, which the supports resist. The shape of the arch naturally channels forces into these supports, making the structure stable and capable of spanning large distances with less material. In essence, the arch's geometry allows it to evenly distribute forces, providing strength and durability while maintaining an elegant form.