The Byfjord Tunnel ( no, Byfjordtunnelen) is a subsea road tunnel in Rogaland county,

Norway Norway, officially the Kingdom of Norway, is a Nordic country in Northern Europe, the mainland territory of which comprises the western and northernmost portion of the Scandinavian Peninsula. The remote Arctic island of Jan Mayen and the ...

. The tunnel runs between the village of

Grødem Grødem is a village in Randaberg municipality in Rogaland county, Norway. The village is a middle-class suburb of the city of Stavanger, located immediately to the south. The village is located along the Byfjorden at the northeastern tip of t ...

on the mainland in

Randaberg Randaberg is a municipality in Rogaland county, Norway. It is located in the traditional district of Jæren, at the northern end of the Stavanger Peninsula. The administrative centre of the municipality is the village of Randaberg. Randaberg ...

municipality and the island of Sokn in Stavanger municipality, running underneath the Byfjorden. The tunnel was built as part of the

Rennesøy Fixed Link Rennesøy is a former municipality in Rogaland county, Norway. It was merged into Stavanger municipality on 1 January 2020. It was located in the traditional district of Ryfylke. The administrative centre of the municipality is the village of V ...

project which opened in 1992 with the goal of connecting all the islands of

Rennesøy Rennesøy is a former municipality in Rogaland county, Norway. It was merged into Stavanger municipality on 1 January 2020. It was located in the traditional district of Ryfylke. The administrative centre of the municipality is the village of ...

to the mainland. The tunnel was a

toll road A toll road, also known as a turnpike or tollway, is a public or private road (almost always a controlled-access highway in the present day) for which a fee (or ''Toll (fee), toll'') is assessed for passage. It is a form of road pricing typically ...

from 1992 until 2006. The tunnel is part of European route E39 highway. With a maximum 8% grade, the tunnel reaches a depth of below sea level at its lowest point. The tunnel was Europe's longest and the world's deepest tunnel upon its completion, it was surpassed by a deeper tunnel in 1994 and a longer tunnel in 1999. The tunnel had an average daily traffic of 9,717 vehicles in 2018.

References

Subsea tunnels in Norway Road tunnels in Rogaland Randaberg Stavanger European route E39 in Norway 1992 establishments in Norway Tunnels completed in 1992 Former toll tunnels {{Rogaland-geo-stub