Norra länken
Norra länken ("The northern link") is a motorway in Stockholm, Sweden, between the port of Värtahamnen and Karlberg, where it connects to Essingeleden. The road is part of the European route E20 and the incomplete Stockholm Ring Road. Norra länken is in length, of which are in tunnels. The part between Karlberg and Norrtull was opened in 1991, and the tunnel between Norrtull and Värtan was opened in 2014. The other parts of the ring road are the highly congested Essingeleden in the west, opened in 1966, Södra länken in the south, opened in 2004, and Österleden in  the east, where () plans have been canceled. History. The part of Norra länken between Karlberg and Norrtull was finished and opened in 1991. As part of the Dennis Agreement (), a political agreement, the construction eastward of the remaining part to Värtahamnen was to be completed as well. The construction was cancelled in 1997 when the project was appealed to the Supreme Administrative Court which determined that the detail plan for the part between Norrtull and Roslagstull was in conflict with the law protecting the Royal National City Park. The political agreement was broken and it was uncertain whether the road  project would be completed. The government and Stockholm Municipality agreed in 2002 on a new alignment between Norrtull and Roslagstull. The detail plan was again appealed, but the Supreme Administrative Court rejected the appeal on February 26, 2007, and construction resumed on May 11, 2007. The tunnel between Nortull and Värtahamnen was opened on November 30, 2014, and the total cost of the tunnel was 10.6 billion SEK. Entrances and exits have been placed at the areas of Norrtull, Roslagstull, Frescati, and Värtahamnen.