The Bjorøy Tunnel (Norwegian: Bjorøytunnelen) is a 2,012-metre (6,601 ft) long subsea road tunnel in Hordaland county, Norway. The tunnel is part of the Norwegian County Road 207 which connects the island of Bjorøy in the municipality of Fjell to the mainland near Håkonshella and Hilleren in the city-municipality of Bergen. It crosses underneath the Vatlestraumen strait, reaching 88 metres (289 ft) below mean sea level. It serves as a fixed link for the 900 residents of the islands of Bjorøy and Tyssøy as well as a large number of cottage owners who vacation on the islands. The first proposal was launched in 1980, and construction started on 29 September 1993. There were severe problems because the tunneling encountered an area of sandstone, causing a year's delay. The total construction cost was NOK 59 million.