The Karmøy Tunnel (Norwegian: Karmøytunnelen) was the longest subsea road tunnel in Norway from 2013 until the opening of Ryfast in 2019, and is located in the municipalities of Karmøy and Tysvær in Rogaland county. At 8.9-kilometer (5.5 mi) long, it links the island of Karmøy with the European Route E39 highway on the mainland. The town of Kopervik lies just south of the western end of the tunnel.

Quick Facts Overview, Location ...

Karmøy Tunnel

Overview
Location	Rogaland, Norway
Coordinates	59.3145°N 5.3632°E / 59.3145; 5.3632
Status	In use
Route	Fv47
Operation
Work begun	September 2009
Opened	5 September 2013
Operator	Statens vegvesen
Technical
Length	8.9 kilometres (5.5 mi)
Lowest elevation	−139 metres (−456 ft)
Grade	7.4%

Close

The tunnel is a major part of the T-Link project, which is a toll road project that was opened in September 2013. At Fosen, the Karmøy Tunnel has an underground roundabout which connects it to another (much shorter) tunnel which heads north to a highway that leads to the town of Haugesund. The Karmøy Tunnel goes under the Karmsundet strait and the Førresfjorden. The tunnel also goes under the northern edge of the Norsk Hydro facility in Karmøy.^[1]