Naviduct

A naviduct, also known as a water bridge or canal bridge, is a navigable aqueduct; a structure that carries a canal, navigable river, or other body of water over another obstacle, such as a valley, road, railway, or another waterway. Naviducts allow vessels to cross the obstacle without the need for locks or lifts, thus streamlining navigation and reducing travel time. They are typically constructed using reinforced concrete or steel and are designed to withstand the weight of the water and the vessels that traverse them. The term "naviduct" is often used specifically when the structure is large and specifically designed for maritime transport. They are generally considered an impressive feat of engineering due to the challenges of maintaining water tightness and structural integrity. Naviducts are often found in areas with extensive canal networks and are crucial infrastructure for inland waterway transportation.