The Gubrist Tunnel is a 3.2 km long motorway tunnel

Tunnel

A tunnel is an underground passageway, completely enclosed except for openings for egress, commonly at each end.A tunnel may be for foot or vehicular road traffic, for rail traffic, or for a canal. Some tunnels are aqueducts to supply water for consumption or for hydroelectric stations or are sewers...

 in Switzerland

Switzerland

Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

, and forms part of the A20 motorway (northern ring around Zurich

Zürich

Zurich is the largest city in Switzerland and the capital of the canton of Zurich. It is located in central Switzerland at the northwestern tip of Lake Zurich...

).

It lies west of the city of Zurich, in a hilly area. It is named after the hill of Gubrist, which is nearby.

The Gubrist Tunnel carries a lot of traffic (on the Berne - St. Gall route), but is remarkably uncongested most of the time. At the moment 90,000 cars/day use this tunnel, but by 2025 this number is expected to rise to 125,000.

On the 12 September 2007 the Swiss government voted for the widening of the tunnel. A third parallel tube will raise the number of the lanes from 4 to 7 (2 + 2 in direction St Gallen and 3 towards Bern). 890 Million Swiss francs will be committed for the construction of the 3.2 km long tunnel.