The Svinesund Bridge (, ) is a through arch bridge crossing Iddefjord at Svinesund, and joining Sweden and Norway. Svinesund is a sound separating the Swedish municipality of Strömstad from the Norwegian municipality of Halden, and thus it is the border between Norway and Sweden in this region. The bridge is the westernmost border crossing (and one of the southernmost) between the two countries and carries the European route E6 which is a major traffic route in the area, connecting Oslo and the rest of Norway with Gothenburg, Malmö, Copenhagen and the rest of Europe. Description of the bridge The New Svinesund Bridge is a highway bridge across the Iddefjord at Svinesund. The bridge's construction cost was NOK 500 million, while the total cost of the project including approach work, customs (this is an EU border) and toll plazas, and new interchanges for E6 (with the old bridge and old E6 becoming local routes) was SEK 1,400 million. The project is a joint venture of the Swedish and Norwegian road authorities, and all costs are to be financed with tolls (some writings refer to them as "road tax") collected. Both bridges was tolled in both directions. The toll plaza stopped on 15. March 2021. The total length of the bridge is 704 metres (2,310 ft) and consists of a substructure in ordinary reinforced concrete together with a steel box-girder superstructure. The main span of the bridge between abutments is approximately 247 metres (810 ft) and consists of a single ordinary reinforced concrete arch which carries two steel box-girder bridge decks, one on either side of the arch. The level of the top of the arch and the bridge deck are +91.7 metres (300.9 ft) and +61 metres (200.1 ft), respectively. Over the part of the bridge where the arch rises above the level of the bridge decking, the two bridge decks are joined by traverse beams positioned at 25.5 metres (83.7 ft) centres. The traverse beams are in turn supported by hangers to the concrete arch. Construction notes The bridge was constructed between 2003 and 2005 and was inaugurated on June 10, 2005, and opened for traffic on June, 13 the same year. Unusually for a two hinge concrete arch bridge, the arch was built using cantilever construction supported by temporary cable stays. The bridge was engineered by Bilfinger Berger, who also acted as general contractors. The two halves of