A Trestle Bridge is a type of bridge that uses a framework of wooden or metal supports, known as trestles, to hold up the bridge deck. These structures are often used in railway and road construction, especially in areas with uneven terrain. Trestle bridges are designed to be lightweight yet strong, allowing them to span long distances while supporting heavy loads. Typically, trestle bridges are built in a series of triangular shapes, which provide stability and strength. They are commonly found in rural areas and are valued for their ability to cross valleys, rivers, and other obstacles. Famous examples include the Kinzua Bridge in Pennsylvania and the Burlington Northern Santa Fe Railway trestles across the American West.