The Crumlin Viaduct is a historic railway bridge located in Crumlin, Wales. Completed in 1857, it was designed to carry the Monmouthshire Railway over the River Ebbw. The viaduct is notable for its impressive structure, featuring 19 arches made of brick and stone, which contribute to its architectural significance. This viaduct spans approximately 1,200 feet and stands about 120 feet above the river. It was an essential part of the railway network during the 19th century, facilitating transportation and trade in the region. Today, the Crumlin Viaduct is recognized as a heritage site, attracting visitors interested in its history and engineering.