The first blasting was performed during a ceremony in 1875, but the real work did not start until 1876. Construction of the last section into Trondheim, along with the station, did not start until 1878, due to disagreements about the plans. By 1878, tracks were laid from Leangen to the border between Nedre Stjørdal and Øvre Stjørdal (). On 27 August 1879, the first train ran from Rotvoll Station, just outside Trondheim, to the national border. Before the line was finished in Sweden, the Norwegian State Railways operated a train once per week from 11 February 1880. Full service was introduced on 17 October 1881, though the line was not yet completed to Östersund; nor did Trondheim Central Station open until 1882. The official opening was on 22 July 1882.