| Viaduct (n.) 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. Thesaurus Entries Bifrost, bascule bridge, bateau bridge, bridge, cantilever bridge, carrefour, catwalk, cloverleaf, crossing, crosspoint, crossroad, crosswalk, crossway, drawbridge, floating bridge, flyover, footbridge, gangboard, gangplank, gangway, grade crossing, intercrossing, intersection, level crossing, lift bridge, overbridge, overcrossing, overpass, pontoon bridge, rope bridge, rotary, span, stepping-stone, stepstone, suspension bridge, swing bridge, toll bridge, traffic circle, undercrossing |