The Karmøy Tunnel ( no, Karmøytunnelen) was the longest subsea road tunnel in

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 t ...

until the opening of

Ryfast Ryfast is a subsea tunnel system in Rogaland county, Norway. The tunnel system is part of the Norwegian National Road 13, and it runs between the city of Stavanger in Stavanger Municipality, under a large fjord, and the area of Solbakk in the mu ...

in 2019, and is located in the municipalities of

Karmøy Karmøy is a municipality in Rogaland county, Norway. It is southwest of the town of Haugesund in the traditional district of Haugaland. The administrative centre of the municipality is the town of Kopervik. Most of the municipality lies on t ...

and

Tysvær Tysvær is a municipality in Rogaland county, Norway. It is part of the Haugalandet region. The municipality is located on the Haugalandet peninsula on the northern side of the Boknafjorden, just east of the towns of Kopervik and Haugesund. Th ...

Rogaland Rogaland () is a Counties of Norway, county in Western Norway, bordering the North Sea to the west and the counties of Vestland to the north, Vestfold og Telemark to the east and Agder to the east and southeast. In 2020, it had a population of 47 ...

county. At long, it links the island of

with the

European Route E39 European route E39 is the designation of a north–south road in Norway and Denmark from Klett, just south of Trondheim, to Aalborg via Bergen, Stavanger and Kristiansand. In total, there are nine ferries, more than any other single road in Eu ...

highway on the mainland. The town of

Kopervik Kopervik is the largest town on the island of Karmøy in Rogaland county, Norway. It is also the administrative centre of the municipality of Karmøy. It is part of the traditional district of Haugaland. The town was also an independent municipa ...

lies just south of the western end of the tunnel. The tunnel is a major part of the T-Link project, which is 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'') is assessed for passage. It is a form of road pricing typically implemented ...

project that was opened in September 2013. At Fosen, the Karmøy Tunnel has an underground

roundabout A roundabout is a type of circular intersection or junction in which road traffic is permitted to flow in one direction around a central island, and priority is typically given to traffic already in the junction.''The New Shorter Oxford En ...

which connects it to another (much shorter) tunnel which heads north to a highway that leads to the town of

Haugesund Haugesund () is a municipality on the North Sea in Rogaland county, Norway. While the population is greater in the neighboring Karmøy municipality, the main commercial and economic centre of the Haugaland region in northern Rogaland and southern ...

. The Karmøy Tunnel goes under the Karmsundet strait and the Førresfjorden. The tunnel also goes under the northern edge of the

Norsk Hydro Norsk Hydro ASA (often referred to as just ''Hydro'') is a Norwegian aluminium and renewable energy company, headquartered in Oslo. It is one of the largest aluminium companies worldwide. It has operations in some 50 countries around the world an ...

facility in Karmøy.

References

Subsea tunnels in Norway Road tunnels in Rogaland Karmøy Tysvær {{Norway-tunnel-stub