The section from Sunnan to Grong was designed by Eivind Gleditsch and in a transitional style between Historicism and Neo Classism. Increased standardization had been taken into use and the so-called Veggli Class or variations of it were used on most smaller station through Namdal. As the line continued northwards, reduced spending on architectural elegance caused simpler and simpler designs in wood. Once the line reached Salten it was evident that steam traction would soon be history and the functional layout of the stations changed. In Salten the smaller stations typically received a concrete ground floor and a wooden upper floor. The more monumental stations were Fauske in concrete and Bodø in brick.