Work on the tunnel began in October 2009. The tunnel was opened on 7 September 2012 by Prime Minister Jens Stoltenberg. The project cost almost 806.6 million kr. For the first 6 years of its use (until 2018), there was a toll for using the tunnel: 100 kr for small vehicles and 200 kr for large vehicles.[3] This was reduced in 2018 and on 8 June 2020 the toll was removed.[4]