A trestle bridge is a type of bridge that uses a framework of triangular shapes to support its structure. This design allows for greater stability and strength, making it ideal for spanning long distances, especially over valleys or rivers. Trestle bridges are commonly made from wood or steel and are often used in railways and highways. These bridges are characterized by their open framework, which reduces wind resistance and allows for easy drainage of rainwater. Trestle bridges have been widely used since the 19th century and are still popular today due to their efficiency and cost-effectiveness in construction.