The Tromsø Bridge (Norwegian: Tromsøbrua) is a cantilever road bridge in the city of Tromsø, in Troms county, Norway. It crosses the Tromsøysundet strait between Tromsdalen on the mainland and the island of Tromsøya. The 1,036-metre (3,399 ft) long bridge has 58 spans, of which the longest is 80 metres (260 ft) with a maximum clearance to the sea of 38 metres (125 ft).
Construction began in 1958 and the bridge was opened in 1960. At the time of its opening, it was the longest bridge in Northern Europe, with a length of 1,036 metres (3,399 ft). At a cost of NOK 14.5 million, the bridge replaced an inefficient ferry connection between the two sides of the strait, and it helped boost the growth and development of Tromsø. Due to severe congestion issues, the mainland road connection was later reinforced by the construction of the Tromsøysund Tunnel in the 1990s. Unlike the tunnel, located almost 3 kilometres (1.9 mi) further north, the Tromsø Bridge leads directly to the city centre of Tromsø.
The Tromsø Bridge was the first cantilever bridge to be built in Norway. Since then, many bridges of this type have been built. The bridge is one of the most important landmarks of Tromsø, and forms part of a motif composed of the Arctic Cathedral, the Tromsdalstinden mountain, and the Tromsø Bridge. In 2000, the Directorate for Cultural Heritage protected the bridge against modifications.
Tromsø (Norwegian pronunciation: [ˈtrʊmsø] ( listen); Northern Sami: Romsa; Kven: Tromssa) is a city and municipality in Troms county, Norway. The administrative centre of the municipality is the city of Tromsø.
Tromsø city is the ninth-largest urban area in Norway by population, and the seventh largest city in Norway by population. It is the largest city and the largest urban area in Northern Norway, and the second largest city and urban area north of the Arctic Circle in Sápmi (following Murmansk). Most of Tromsø, including the city centre, is located on the small island of Tromsøya in the county of Troms, 350 kilometres (217 mi) north of the Arctic Circle. Substantial parts of the urban area are also situated on the mainland to the east, and on parts of Kvaløya—a large island to the west. Tromsøya is connected to the mainland by the Tromsø Bridge and the Tromsøysund Tunnel, and to the island of Kvaløya by the Sandnessund Bridge. The city is warmer than most other places located on the same latitude, due to the warming effect of the Gulf Stream.