柯林斯詞典viaduct /?va???d?kt/ (viaducts) 1. N-COUNT A viaduct is a long, high bridge that carries a road or a railway across a valley. 高架道路; (架于山谷上的)高架鐵路 返回 viaduct劍橋詞典a long , high bridge , usually held up by many arches , that carries a railway or a road over a valley 高架橋；高架道路 a railway viaduct 高架鐵路橋 返回 viaduct