Which term describes a bridge that carries traffic or pipelines over another communication system like roads or railways?

• A. Bridge
• B. Viaduct
• C. Fly-over/Over-Bridge
• D. Substructure

Answer: (C)

A structure that carries traffic over another route is an overpass, commonly called a flyover or over-bridge. This term specifically describes a crossing built to let vehicles pass above an existing road or railway, keeping the two routes separated and reducing interference at grade. A bridge is a general term for any structure that spans a gap, while a viaduct is typically a long elevated roadway or railway across a wide area or multiple spans and isn’t defined by crossing another specific route at a different level. Substructure refers to the foundations and supporting elements, not the type of crossing itself.