A road bridge is a structure that connects two land masses separated by a body of water or a valley. It serves as a passageway for people and vehicles moving from one side to the other. The term "road bridge" can be interchanged with numerous synonyms such as viaduct, causeway, span, flyover, overpass, footbridge, arch bridge, suspension bridge, and cable-stayed bridge. Each of these synonyms describes a specific type of bridge that possesses unique characteristics in terms of design, construction, and purpose. The diversity of synonyms for road bridge underlines the importance of these structures in facilitating transportation, enabling economic growth, and enhancing social connectivity.