Calstock Viaduct

Calstock Viaduct is a railway viaduct that spans the River Tamar and was completed in March 1908. It was constructed as part of the Plymouth, Devonport and South West Junction Railway, which acquired the East Cornwall Mineral Railway in 1894. The viaduct is made of precast concrete blocks that were manufactured on-site in a casting yard located on the Devon side of the structure.

The design features twelve round arches supported by rectangular tapered piers made of rusticated blocks, which include rounded cutwaters. Each arch has imposts and voussoirs, and the structure is topped with a plain parapet and coping. There are stepped corbels between each pair of arches, creating refuges in the parapet.

The viaduct was built by John Charles Lang, a public works contractor from Liskeard, with the engineering work carried out by W.R. Galbraith and Richard Church. It served as a link line from Bere Alston to the East Cornwall Mineral Railway in Calstock. The design bears similarities to another viaduct located in Poundstock, Cornwall. During its construction, materials were transported across the viaduct using aerial ropeways known as Blondins. Notably, until 1934, a vertical hoist was used to lift lower tram wagons from the riverbank to the level of the viaduct.