The longest road tunnel in the world, the Laerdal Tunnel is situated in Norway. With a road length of 24.51-kilometres the tunnel connects Laerdal and Aurland, two municipalities in the country. The tunnel also provides a ferry-free connection between Oslo and Bergen.
The construction of this tunnel started in 1995 and it was opened in 2000. It cost a total of 1.082 billion Norwegian krone. A great deal of investment was made for ensuring the safety of the passengers. This is the first tunnel in the world to be equipped with an air treatment plant.
Picture Credit : Google
