The main line was to be not quite ten miles (16 km) long. The short branch, a "railway or tramway", to the Quays at Totnes was on the south side of the SDR main line, and was to be horse-worked.
The main railway line was planned to be about ten miles long. A smaller branch line, intended for use by horses, connected to the Quays at Totnes and ran along the south side of the SDR main line.