The project comprises the renovation of Elgskauås, Stampleinås and Merraskott tunnels in Røyken and Hurum municipalities in Buskerud counties. These are 2 645, 380 and 605 m respectively. The work is to be carried out in order to increase the safety for road users, so that the tunnels are upgraded to be in accordance with the requirements in the tunnel safety regulations and the electro regulations.