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The Øresund or Öresund Bridge (in Danish: Øresundsbroen; in Swedish: Öresundsbron; hybrid name: Øresundsbron) is an 8 kilometres combined railway and motorway bridge that runs from Sweden to Denmark across the Öresund strait. Designed by the Danish engineering firm COWI, and constructed between 1995 and 2000, it is the longest combined road and rail bridge in Europe and connects two major metropolitan areas: Copenhagen, the Danish capital city, and the Swedish city of Malmö. Øresund trains are operated by DSB on the Danish side and SJ Öresund on the Swedish side (with onward connections to Gothenburg, Kalmar, and Karlskrona). On the Danish side, many trains continue northwards on the Coast Line to Helsingør. SJ operates SJ 2000 high-speed trains between Stockholm, Malmö, and Copenhagen. The Öresund Bridge gave its name to the Nordic noir television series The Bridge, as the series was set in the region around the bridge.

Sources:

https://en.wikipedia.org/wiki/Oresund_Bridge

https://www.bbc.co.uk/programmes/The_Bridge