 There were four bids for the tender to build the line; Ingeniørfirmaet Strøm & Hornemann was the cheapest and was awarded the contract in June 1903.They started work in 1903, despite that a concession was not granted until 29 August 1904, with a duration of 30 years, on condition that the line be completed by 1907.A last-minute change to the route was also made to allow access from Rykene.