A causeway is a raised path or road which crosses swamps or water.

See also Wikipedia.

Causeway buildings on this website

Bartell's Drift: n.d.. East London, Eastern Cape
Nahoon Causeway - Abbotsford Causeway: 1919. Abbotsford, East London, Eastern Cape
Vryheid Branch Line Viaduct north of the Buffalo River: 1898. Dundee, KwaZulu-Natal