The Eiksund tunnel
() is an undersea tunnel
between the municipalities of Ørsta
in Møre og Romsdal
. The Eiksund Bridge
island and the village of Eiksund
with the nearby island Eika
. The Eiksund Tunnel begins at the south end of the bridge (on Eika island) and connects it to mainland Norway. The bridge-tunnel complex serves the municipalities of Herøy
, and Volda
which together have over 40,000 inhabitants.
The tunnel carries three lanes of traffic. The average daily traffic through the Eiksund Tunnel is around 1,000 vehicles, 50% of which are trucks. The total cost of the tunnel was about .
The tunnel is long and reaches a depth of , which makes it the deepest undersea tunnel
of its kind in the world. The tunnel was opened to traffic on 23 February 2008. The tunnel was originally intended to be opened to the public in July 2007, but numerous delays pushed the date back to December 2007 and then eventually to 2008.
The long Eiksund Bridge
and the long Helgehorn Tunnel
were built along with the tunnel. These three structures are a part of Riksvei 653, a county highway that links Riksvei 61 between Ulstein and Herøy to the highway between Ørsta and Volda.
On 28 June 2009, there was a severe accident in the tunnel, leaving five people dead.