'The Slade Viaduct', Devon, 1848.
© NRM / Pictorial Collection / Science & Society Picture Library
Coloured lithograph, drawn by W Dawson, lithographed and printed by W Spreat, Exeter, showing a train about to cros the Slade Viaduct on the South Devon Railway. The 101 foot high viaduct was one of a series of timber viaducts of similar design built by Isambard Kingdom Brunel for the South Devon Railway linking Exeter and Plymouth, which was completed in 1849. Although inexpensive to build, the timber viaducts had a short lifespan, and needed to be replaced by stone or brick structures.