Tunnels design for the construction of the new motorway D1 in northen Slovakia.
The Lietavská Lúčka – Višňové – Dubná Skala project, that consists in the construction of 13.4 km of the D1 motorway in northern Slovakia. This section of motorway is part of the no. 5 transportation corridor of the Trans-European Networks (TEN).
The main works to be built include 5 overpasses for an overall length of 2.5 km, as well as a twin-tube tunnel 7.5 km in length.