| South Devon and Tavistock Railway | |
|---|---|
 Cann Viaduct over the River Plym |
The South Devon and Tavistock Railway linked Plymouth with Tavistock in Devon; it opened in 1859. It was extended by the Launceston and South Devon Railway to Launceston, in Cornwall in 1865. It was a broad gauge line but from 1876 also carried the standard gauge (then referred to as narrow gauge) trains of the London and South Western Railway between Lydford and Plymouth: a third rail was provided, making a mixed gauge. In 1892 the whole line was converted to standard gauge only.
The line closed to passengers in 1962 although sections at either end were retained for a while to carry freight traffic. A short section has since been reopened as a preserved line by the Plym Valley Railway.