Ministry of Labour gave permission for surveying, which started on 8 August. The Railway Board send a proposal for a plan for the Rauma Line to the ministry on 23 May 1910, which was passed by parliament on 20 July. However, the vote did not include any allocation of money. Additional surveying started on 18 August 1911 and was led by W. Sandberg. This time two alternatives were to be surveyed, one with a maximum gradient of 2.6 percent, and one with 2.0. On 29 June, the government approved a concession for the line to be built as a private railway. The final plan for construction was presented by the Railway Board to the ministry of 17 June 1912, and was passed by parliament on 27 July. Construction Construction started on 12 January 1912 at Dombås. The work was divided into four geographic divisions, with offices located at Åndalsnes, Ormheim, Sørsletten and Holaker. The working week consisted of six days, with a ten-hour working day during summer, eight hours during winter and nine hours in spring and autumn. From 1921, a new law reduced the work week to 48 hours. The entire construction took 14,462,247 man-hours. The number of people employed varied between 615 and 550. Most of the workforce consisted of people from other parts of the country, and some foreigners, mostly from Sweden. The navvies were often unmarried and spent large parts of their income on alcohol. In Åndalsnes, a cutting was made for the line and the earthwork from the cutting was used to create artificial land for the station and port. To secure sufficient water for the locomotives, the municipality built a larger water supply, including a new dam at Bjørmosen, which could secure per year for the railway. The stations were built in wood in a simple, balanced style similar to what was found on the Dovre Line. The buildings were designed in-house by NSB Arkitektkontor; the main architect being Gudmund Hoel, while other major contributors were Bjarte Baastad and Gerhard Fischer. Some minor buildings were reused designs from the Dovre Line by Erik Glosimodt. The railway opened in three stages: the from Dombås to Bjorli on 19 November 1921, and the from Bjorli to Verma on 25 November 1923. Until the whole line was taken into use, there was a roundhouse in use at Bjorli. The line was officially opened on 29 November 1924