The Bothnia Line () is a high-speed railway line in northern Sweden. The long route, from Höga Kusten Airport, where it connects to the Ådalen Line, via Örnsköldsvik to Umeå, was opened in 2010 and trains are allowed to travel at speeds up to (although no train with a higher top speed than uses the railway as of 2023). Introduction Completed in August 2010, the Bothnia Line adds of high-speed railway to the Swedish railway network. At up to this is also the highest-speed track in the country. The route branches off from the Ådalen Line at Höga Kusten Airport just north of Kramfors and goes via Örnsköldsvik to Umeå where it connects to the Umeå-Vännäs line and the Main Line Through Upper Norrland. The railway line has 140 bridges and of tunnels. Construction was carried out by Botniabanan AB, a company owned 91% by the Swedish government and 9% by the municipalities of Kramfors, Örnsköldsvik, Nordmaling and Umeå. Work began on the line in 1999, and reached the halfway point at the end of 2005. After its completion in 2010, the line was leased to the Swedish Rail Administration. When Botniabanan AB has recovered its investment (estimated to be 2050), the ownership of the line will pass to the Rail Administration. The construction budget was SEK 15 billion. It is intended that the Bothnia Line will compete with road transport using the European route E4, which is a main road carrying heavy freight traffic; however because the line uses the European Rail Traffic Management System signal system, which most of Sweden does not, relatively few freight train operators have invested in the ERTMS technology for their locomotives. Passenger traffic between Umeå and Örnsköldsvik began in August 2010. The delayed upgrade of the ERTMS signal system on the Ådalen Line meant that traffic south of Örnsköldsvik did not begin until 2012. Purpose A railway line along the coast of northern Sweden has been considered beneficial for many years, with a lack of capacity and long travel times on the existing main line (further inland) because of lower speed limits, curves, and gradients. The Bothnia line also improves public mobility in the area, reducing the travel time between Umeå and Örnsköldsvik to 50 minutes via high-speed train. It is also served by regional trains, at a frequency of up to two trains (mostly one train) in each direction an hour. Railway