Hitra Tunnel

Hitra Tunnel
Hitratunnelen
View of the north entrance to the tunnel
Overview
Location Trøndelag, Norway
Coordinates 63°30′04″N 9°05′51″E / 63.5010°N 9.0974°E / 63.5010; 9.0974Coordinates: 63°30′04″N 9°05′51″E / 63.5010°N 9.0974°E / 63.5010; 9.0974
Status In use
Route 714
Start Hemnskjela
End Jøsnøya
Operation
Opened 8 December 1994
Operator Statens vegvesen
Traffic Automotive
Technical
Length 5,645 metres (18,520 ft)
No. of lanes 3
Lowest elevation −264 metres (−866 ft)
Grade 10%

The Hitra Tunnel (Norwegian: Hitratunnelen) is an undersea tunnel connecting the island municipality of Hitra to the mainland municipality of Snillfjord in Trøndelag county, Norway. The tunnel is 5,645 metres (18,520 ft) long and reaches a depth of 264 metres (866 ft) below sea level, making it the deepest tunnel in the world when it was built.[1][2]

The tunnel begins in the municipality of Hitra on the island of Jøsnøya, just south of the village of Sandstad. The tunnel then runs under the Trondheimsleia to the island of Hemnskjela in Snillfjord municipality. There is a small bridge connecting Hemnskjela to the mainland. The tunnel was built as part of a large project called "Fastlandsforbindelsen Hitra–Frøya". The project also included the construction of the Frøya Tunnel and the construction of a road and bridge network connecting the islands of Fjellværøy and Frøya.

The tunnel has three lanes. Nearly 2,500 cars pass through it every day. Electronics and pumps handle over 38,000 litres (8,400 imp gal; 10,000 US gal) of water per hour.[3]

References

  1. ↑ Merzagora, Eugenio A.; Lotsberg, Gunnar (eds.). "Road Tunnels in Norway > 3 000 m". Road Tunnels in Norway. Retrieved 2010-12-28.
  2. ↑ Store norske leksikon. "Hitratunnelen" (in Norwegian). Retrieved 2010-12-28.
  3. ↑ "Hitratunnelen". Hitra·Frøya (36(46)). 2011-06-21.


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