Starting work in 1993, the first two section of the Vestfold Line to be upgraded were a double track segment from Kobbervikdalen to Skoger, and a segment from Åshaugen via a new Sande Station to Holm. The Skoger section opened in on 17 October 1995, while the section past Sande did not open until 23 October 2001. Part of the reason for five-year delay with the second segment was delays with the installation of the signaling system which was being carried out by Adtranz.