Even before planning of the Hell–Sunnan Line was completed, there arose disagreement as to the route onwards. In a plan from the 1870s, there was consensus that the towns of Stjørdal, Levanger, Steinkjer and Namsos should receive a line, but there was a disagreement as to the route. The Beitstad Line would run from Steinkjer via Beitstad and Namdalseid to Namsos and from there to Grong, while the Snåsa Line would run from Sunnan via Snåsa to Grong, with a branch from Grong to Namsos. The Beitstad Line would run through the most densely populated areas, while the Snåsa Line was shorter. Parliament decided on the Snåsa Line in 1900. The railway was extended from Sunnan to Snåsa Station on 30 October 1926, with the section from Hell to Sunnan becoming classified as part of the Nordland Line. The railway was completed to Bodø on 7 June 1962.