viaduct

/ˌvaɪəˈdʌkt/

Other forms: viaducts

A viaduct is a bridge made of connected sections. Most viaducts are a series of arches that span a road.

Some viaducts stretch across train tracks, while other carry traffic across valleys, gorges, or bodies of water. What's distinctive about older viaducts is that they're usually made of equal-sized arches all linked into one long bridge. Newer viaducts can look simply like an elevated road or highway. The word viaduct combines the Latin via, or "road," with ducere, "to lead something."

Definitions of viaduct

1. noun

   bridge consisting of a series of arches supported by piers used to carry a road (or railroad) over a valley
   type of:

   bridge, span

   a structure that allows people or vehicles to cross an obstacle such as a river or canal or railway etc.