The Wampo tiered viaduct constructed along the edge of the Khwae Noi River. A diesel train passes over the extended trestle railway bridge is usually known as the Wampo viaduct. The two main segments of the bridge followed the base of the cliff for some distance. A protrusion had to be made of the cliff face to shape a bottom for the viaduct and embankment construction. The viaduct includes wooden trestles beside the river, snuggling against the cliff side.