Bypass of Etroubles

Bypass road to the SS 27, from Etroubles to the motorway leading to the Grand Saint-Bernard tunnel.
The project concerns a bypass road encircling the communities of Etroubles and Saint-Oyen, currently crossed by trunk road SS 27 and therefore subject to intense vehicular traffic. The road is the unique connection between Aosta valley and Switzerland via the Grand Saint-Bernard cross-border tunnel. The Grand Saint-Bernard Pass is closed during the winter season.The bypass road requires the construction of two tunnels and a viaduct. A first 1.5 km tunnel will divert through traffic in Etroubles, then a 200 m double span viaduct will cross the Grand Saint-Bernard valley and then a second 2,658 m tunnel will bypass Saint-Oyen