Unit 13 Causeway

The rail causeway The causeway to Antelope Island in

across the Wadden Sea to the Great Salt Lake, Utah, USA

the island of Sylt in Germany

In modern usage, a causeway is a road or railway elevated by a bank, usually across a broad body of water or wetland. A transport corridor that is carried instead on a series of arches, perhaps approaching a bridge, is a viaduct. The distinction between the terms causeway and viaduct becomes blurred when flood-relief culverts are incorporated. Many causeways are tidal, being covered for a period surrounding high tide.