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Arch bridge
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<p>An arch bridge is a <a href="/facts/Bridge/vBJ7Hw8v">bridge</a> with <a href="/facts/Abutment/QzGxGmDq">abutments</a> at each end shaped as a curved <a href="/facts/Arch/t9L51pqn">arch</a>. Arch bridges work by transferring the weight of the bridge and its <a href="/facts/Structural_load/MAxjDyhc">loads</a> partially into a horizontal thrust restrained by the abutments at either side, and partially into a vertical load on the arch supports. A <a href="/facts/Viaduct/xAd1mu7L">viaduct</a> (a long bridge) may be made from a series of arches, although other more economical structures are typically used today. </p>