The Freifjord Tunnel is a 5086 metres (3.2 mi) long undersea tunnel

Undersea tunnel

An undersea tunnel is a tunnel which is partly or wholly constructed under a body of water. They are often used where building a bridge or operating a ferry link is impossible, or to provide competition for existing bridges or ferry links...

 under the Freifjorden

Freifjorden

The Freifjorden is a fjord in the municipalities of Kristiansund, Tingvoll, and Gjemnes in Møre og Romsdal county, Norway. The long fjord begins near the island of Tustna and flows southwest between the islands of Nordlandet and Frei on the west side and the mainland peninsula of Straumsnes and...

 in Møre og Romsdal

Møre og Romsdal

is a county in the northernmost part of Western Norway. It borders the counties of Sør-Trøndelag, Oppland and Sogn og Fjordane. The county administration is located in Molde, while Ålesund is the largest city.-The name:...

 county, 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...

. The tunnel begins on the island of Frei

Frei

Frei is a village, island, and former municipality in Møre og Romsdal county, Norway. It is located in the present-day municipality of Kristiansund between the Kvernesfjord and Freifjord...

 in the municipality of Kristiansund

Kristiansund

Kristiansund is a city and municipality on the western coast of Norway, in the Nordmøre district of Møre og Romsdal county. It was officially awarded township status in 1742, and it is still the major town for the region. The administrative center of the municipality is the city of Kristiansund...

 and then descends 130 metres (426.5 ft) below the Freifjorden

Freifjorden

The Freifjorden is a fjord in the municipalities of Kristiansund, Tingvoll, and Gjemnes in Møre og Romsdal county, Norway. The long fjord begins near the island of Tustna and flows southwest between the islands of Nordlandet and Frei on the west side and the mainland peninsula of Straumsnes and...

 and ends on the island of Bergsøya

Bergsøya

Bergsøya is an island in the municipality of Gjemnes in Møre og Romsdal county, Norway. The island is located near the junctions of the Freifjorden, Kvernesfjord, and Tingvollfjorden. The highest point on the island is the tall mountain Varden....

 in the municipality of Gjemnes

Gjemnes

Gjemnes is a municipality in Møre og Romsdal county, Norway on the Romsdal peninsula. It is part of the Nordmøre region. The administrative centre is Batnfjordsøra, which lies along the Batnfjorden and is a former steamship landing place...

. The tunnel opened in 1992 as part of the Krifast

Krifast

The Kristiansund Mainland Connection is a road system on the highways and that connects the municipality of Kristiansund to the islands of Frei, Bergsøya, and Aspøya to mainland Norway. Krifast opened in 1992 and consists of of road and of bicycle paths...

 system which connects the city of Kristiansund to the mainland of Norway through the tunnel and then across either the Bergsøysund Bridge

Bergsøysund Bridge

Bergsøysund Bridge is a pontoon bridge that crosses the Bergsøysundet strait between the islands of Aspøya and Bergsøya in Møre og Romsdal county, Norway. The bridge is long, the longest span is , and the maximum clearance to the sea is . The bridge has 13 spans.Bergsøysund Bridge was opened in...

 or the Gjemnessund Bridge

Gjemnessund Bridge

The Gjemnessund Bridge is a suspension bridge that crosses the Gjemnessundet strait between the mainland and the island of Bergsøya in the municipality of Gjemnes in Møre og Romsdal county, Norway. The long bridge is the longest suspension bridge in Norway, although it does not have the longest...

from Bergsøya.