Metal bridges are structures made primarily from metals like steel or aluminum, designed to span physical obstacles such as rivers, valleys, or roads. They are known for their strength, durability, and ability to support heavy loads, making them ideal for both vehicular and pedestrian traffic. Common types of metal bridges include beam bridges, truss bridges, and arch bridges. These bridges are often favored for their quick construction and lower maintenance costs compared to other materials like concrete. Metal bridges can also be prefabricated, allowing for easier transport and assembly on-site. Their design can be both functional and aesthetically pleasing, contributing to the surrounding landscape.