The Østfold Line is a 170-kilometer (110 mi) railway line which runs from Oslo through the western parts of Follo and Østfold to Kornsjø in Norway. It continues through Sweden as the Norway/Vänern Line. The northern half is double track and the entire line is electrified. It serves a combination of commuter, regional and freight trains and is the main rail corridor in the south of Norway. The Follo Line runs parallel to the Østfold Line in tunnel. The Eastern Østfold Line branches off at Ski Station and runs 79 kilometers (49 mi) before rejoining at Sarpsborg Station.
NSB Class 73 train south of Vestby Station
The original Ljan Station
The Ljan Viaduct was perhaps the most spectacular steel bridge along the line. It was ultimately demolished in 1929.
The original Sarp Bridge was modified with an upper level to carry the railway. It was demolished after a new railway bridge was completed in 1931.
Norway/Vänern Line is a Y-shaped railway line in Sweden. The main section runs from Gothenburg Central Station to Kil Station, mostly along the west shore of Vänern. There is a branch from Erikstad to the Norway–Sweden border at Kornsjø, from where it continues as the Østfold Line to Oslo. The lengths of the line are 112 kilometres (70 mi) from Gothenburg to Erikstad, 180 kilometres (110 mi) from Gothenburg to Kornsjø and 232 kilometres (144 mi) from Gothenburg to Kil. The line is single track, except for the 82 kilometres (51 mi) section from Gothenburg to Öxnered, which is double track.
NSB Class 73 north of Öxnered
