Detail of the arches and roadway. Image source: Woodward, Calvin Milton. A History of the St. Louis Bridge. St. Louis, G. I. Jones and Company, 1881, pl. 19.

Centuries of Civil Engineering

A Rare Book Exhibition Celebrating the Heritage of Civil Engineering

Viaducts & Aqueducts

The Crumlin Viaduct

The Crumlin viaduct was built to carry the Newport, Abergavenny, and Hereford Railway over the valley of the Ebbw in South Wales. It is over 1800 feet long, and at its greatest height is over 200 feet above the river. A viaduct is distinguished from a bridge in having separate supporting piers that are not connected together. The Crumlin viaduct is carried by cast iron column members, which support Warren truss girders made of wrought iron. The viaduct was designed by Liddell and Gordon and was placed into service in 1857. It was considered the engineering wonder of its day, and William Humber chose to illustrate it as the frontispiece to his definitive study of iron bridges and girders.

Towers and roadway of the Crumlin Viaduct. Image source: Humber, William. A Practical Treatise on Cast and Wrought Iron Bridges and Girders, as Applied to Railway Structures, and to Buildings Generally. London: E. & F. N. Spon, 1857, frontispiece.

View Source »