Railway director Carl Abraham Pihl, who was demanded in 1857 by a Royal Decree to instruct a terrain investigation of the area along the river Drammenselva from Drammen to Randsfjorden, proposed a rail line from Randsfjorden with a branch line to Hen, the construction of which was completed on 4 December 1863.
The construction of the Randsfjord Line was begun on 4 December 1863, and, on 1 September 1866, the line was finished to Vikersund. 
