noun bridge consisting of a series of arches supported by piers used to carry a road (or railroad) over a valley
a way + -duct
, as in aqueduct
: cf. F. viaduc
. See Via
, and Aqueduct
- A structure of considerable magnitude, usually with arches or supported on trestles, for carrying a road, as a railroad, high above the ground or water; a bridge; especially, one for crossing a valley or a gorge. Cf. Trestlework.
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