A cantilever bridge is a type of bridge that is supported on only one end. It consists of horizontal beams that extend outward from a central support, allowing the bridge to span a distance without needing additional supports in the middle. This design is efficient for crossing wide gaps, such as rivers or valleys. The construction of a cantilever bridge typically involves materials like steel or concrete. One famous example of a cantilever bridge is the Forth Bridge in Scotland, which showcases the strength and stability of this engineering design. Cantilever bridges are often used in both road and rail applications.