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.

Example:
where can i find the the entrance to the bangour village hospital Viaduct?

Taxonomy
viaduct, bridges, spans, expressways, cross, traffic, deck, free encyclopedia, railroads, carries, Candaba viaduct, southern France, valleys, Alabang, reaches, rail traffic, Prince Edward Viaduct, tunnels.

Defination from the web:
Viaduct in Toronto, Canada, that carries motor traffic on the top deck as Bloor Street, and metro as the ... The Millau Viaduct is a cable-stayed road-bridge that spans the valley of the River Tarn near Millau in southern France. ...