The Vestfold Line is being upgraded to
high-speed rail, with the section north of Tønsberg scheduled for completion by 2024. The section through Horten is bound by two components. The first is that the line needs to be dimensioned for through speeds of . The second is that two smaller sections of line have already been upgraded. The first is a passing loop at the closed
Nykirke Station which opened on 15 October 2001. The second was of double track from
Tønsberg Station to the closed
Barkåker Station, including the
Jarlsberg Tunnel, which opened on 7 November 2011. These were both built without a plan for where the line in between would run. With the 2016 opening of the
Holmestrand Tunnel, Nykirke–Barkåker and the section through
Kobbervikdalen are the only remaining sections needed for a continual high-speed line between
Drammen and
Tønsberg. , just south of Skoppum. A potential new Skoppum West Station would be situated somewhat further west than the current line. The conditions made it impossible to place a line through the town of Horten, forcing the
Norwegian National Rail Administration to consider three routes which entirely bypassed the town. Three proposals were made. The two easternmost, denoted Bakkenteigen and Skoppum East, would largely be carried on a large
viaduct over the landscape. The third, Skuppum West, would run entirely west of the existing track and pass west of the village of Skoppum. Either way the new station will need a feeder bus service as well as be built with significant
park and ride facilities. The Bakkenteigen alternative would serve the Vestfold campus of the
University College of Southeast Norway. Its viaduct would be long. It could also pass through the village of Nykirke. Bakketeigen is regarded as having the best possibility for urban development. Skoppum East would be shorter, with a slightly shorter viaduct and a slightly longer tunnels. Skoppum West would avoid viaducts and be only , but have of tunnel. The station would be situated on
National Road 19, just off the intersection with
E18, west of the village of Skoppum. The latter has the lowest investment costs, and the least interference with the landscape. ==References==