A truss bridge is a type of bridge that uses a framework of triangular shapes to support its structure. This design helps distribute weight evenly, making the bridge strong and stable. Truss bridges are often made from materials like steel or wood, and they can span long distances, making them ideal for crossing rivers or valleys. The triangular truss design is not only efficient but also cost-effective. Famous examples of truss bridges include the Smithfield Street Bridge in Pittsburgh and the Burlington Northern Santa Fe Railway Bridge in Kansas. These bridges showcase the beauty and functionality of this engineering marvel.