The original contract was to build a 40 km feeder line from Rohtas to the East Indian Railway's Delhi - Calcutta trunk route at Dehri-on-Sone.

Rohtas Industries brought the line up to Tiura Pipradih by adding another 25 km to the DRLR, most of which passed through their property.

At its peak, the DRLR used to operate two daily passengers trains in each direction from Dehri-on-Sone and Tiura Pipradih, a run of 67 km.

After the wartime increase in traffic the railway brought as many as eight new ZB class 2-6-2 tender locomotives, orders for which were equally split between Hudswell Clarke and Krauss Maffei.

[7] Restoration of Dehri-Rohtas Light Railway in Broad Gauge from Sasaram Junction to Tiura Pipradih was planned & started in 1999/2000 year.