The Works include blasting of a 680 m tunnel with a cross-section of 15,8 m2. The laying of 300 m culvert with a diameter of Ø2 400 (Ø2 500) and a 25 m culvert with a diameter of Ø2 000. The Construction (concrete) of a weir with sand trap, a staircase in the crossing between the culvert and the tunnel (Alberthaugen) and the construction (concrete) of a wall with access in the crossing between the tunnel and the culvert (Rishaugen).