A trestle is a framework used to support a structure, commonly seen in bridges and railways. It typically consists of a series of triangular units, which provide stability and strength. Trestles are designed to hold up heavy loads while allowing for flexibility and movement, making them ideal for spanning uneven terrain. In addition to bridges, trestles can also be found in construction and furniture, such as trestle tables. They are often made from materials like wood or metal, depending on the intended use and required durability. Trestles play a crucial role in engineering and design, ensuring safety and functionality.