The line featured steep gradients; 16.75 miles (26.96 km) were at 1 in 60 (1.7%) or steeper, and much of the rest was steeper than 1 in 140 (0.7%).
The principal engineering works on the railway were:
Waterrow Viaduct, Venn Cross: a wrought iron viaduct 162 yards (148 m) long and 101 feet (31 m) above the valley floor
Castle Hill (or Filleigh) Viaduct, Filleigh, a stone-pillared cast-iron viaduct 232 yards long and 94 feet (29 m) high.
The pillars have been reused for the North Devon Link road.

Bathealton Tunnel, 440 yards (400 m) long
Venn Cross Tunnel, 246 yards (225 m) long
Nightcote Tunnel, 44 yards (40 m) long, near Dulverton
Castle Hill Tunnel, 317 yards (290 m) long
The line featured steep gradients; 16.75 miles (26.96 km) were at 1 in 60 (1.7%) or steeper, and much of the rest was steeper than 1 in 140 (0.7%). The principal engineering works on the railway were:
Waterrow Viaduct, Venn Cross: a wrought iron viaduct 162 yards (148 m) long and 101 feet (31 m) above the valley floor
Castle Hill (or Filleigh) Viaduct, Filleigh, a stone-pillared cast-iron viaduct 232 yards long and 94 feet (29 m) high. The pillars have been reused for the North Devon Link road.
Bathealton Tunnel, 440 yards (400 m) long
Venn Cross Tunnel, 246 yards (225 m) long
Nightcote Tunnel, 44 yards (40 m) long, near Dulverton
Castle Hill Tunnel, 317 yards (290 m) long
Devon and Somerset Railway