The Stongafjell Tunnel is a 694 metres (2,276.9 ft) long road tunnel in Askøy

Askøy

Askøy is a municipality in the county of Hordaland, Norway. Since the opening of the Askøy Bridge leading to the mainland in Bergen in 1992, the population has increased rapidly. Its population growth is as of 2008 among the highest in Norway...

, Norway

Norway

Norway , officially the Kingdom of Norway, is a Nordic unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, and the Arctic archipelago of Svalbard and Bouvet Island. Norway has a total area of and a population of about 4.9 million...

. Part of County Road 562

Norwegian County Road 562

County Road 562 runs from Storavatnet in Bergen across the western part of Askøy. Until 1 January 2010 it was called National Road 562 .-Route:...

, it opened in December 1991 to connect the road to the Askøy Bridge

Askøy Bridge

The Askøy Bridge is a suspension bridge which crosses Byfjorden between Bergen and Askøy in Hordaland, Norway. It is long and has a main span of , making it the longest suspension bridge in Norway. It carries two lanes of County Road 562 and a combined pedestrian and bicycle path...

. In 2004, it had 11,050 vehicles per day, making it part of the section of road with the most traffic in Askøy. In 2011, Hordaland County Municipality

Hordaland county municipality

Hordaland County Municipality is the regional governing administration of Hordaland, Norway. The main responsibilities of the county municipality includes the running of 46 upper secondary schools, with 17,000 pupils...

granted NOK 3.7 million to upgrade the electrical systems in the tunnel.