An arch bridge is a type of bridge that uses a curved structure to support its weight. The arch shape helps distribute the load evenly, allowing the bridge to span large distances without needing many supports. This design has been used for centuries, with famous examples like the Pont du Gard in France showcasing its strength and beauty. The materials used in arch bridges can vary, including stone, brick, and modern materials like steel and concrete. Arch bridges are not only functional but also aesthetically pleasing, often becoming iconic landmarks in their locations. Their enduring design continues to inspire engineers and architects today.