The Kerenzerberg Tunnel is a

motorway A controlled-access highway is a type of highway that has been designed for high-speed vehicular traffic, with all traffic flow—ingress and egress—regulated. Common English terms are freeway, motorway, and expressway. Other similar terms ...

tunnel A tunnel is an underground or undersea passageway. It is dug through surrounding soil, earth or rock, or laid under water, and is usually completely enclosed except for the two portals common at each end, though there may be access and ve ...

Switzerland Switzerland, officially the Swiss Confederation, is a landlocked country located in west-central Europe. It is bordered by Italy to the south, France to the west, Germany to the north, and Austria and Liechtenstein to the east. Switzerland ...

, and forms part of the A3 motorway from

Basel Basel ( ; ), also known as Basle ( ), ; ; ; . is a city in northwestern Switzerland on the river Rhine (at the transition from the High Rhine, High to the Upper Rhine). Basel is Switzerland's List of cities in Switzerland, third-most-populo ...

and

Zürich Zurich (; ) is the list of cities in Switzerland, largest city in Switzerland and the capital of the canton of Zurich. It is in north-central Switzerland, at the northwestern tip of Lake Zurich. , the municipality had 448,664 inhabitants. The ...

Sargans Sargans is a Municipalities of Switzerland, municipality in the ''Wahlkreis'' (constituency) of Sarganserland (Wahlkreis), Sarganserland in the Cantons of Switzerland, canton of St. Gallen (canton), St. Gallen in Switzerland. Sargans is known for ...

. The tunnel is long and lies south-west of

Lake Walen Lake Walen, also known as Lake Walenstadt or (), is one of the larger lakes in Switzerland. Located in the east of the country, about two thirds of its area are in the canton of St. Gallen and about one third in the canton of Glarus. Its na ...

, under the

Kerenzerberg Pass Kerenzerberg Pass ( el. ) is a mountain pass in the Alps in the canton of Glarus, Switzerland. It connects Mollis and Mühlehorn above Lake Walen (). The pass road was built in 1848 and has a maximum grade of 10 percent. Two tunnels have been ...

. The Kerenzerberg Tunnel is a one-way, unidirectional tunnel. Traffic from Zürich to Sargans must pass through the tunnel, whilst traffic in the opposite direction runs along the shores of the

Walensee Lake Walen, also known as Lake Walenstadt or (), is one of the larger lakes in Switzerland. Located in the east of the country, about two thirds of its area are in the canton of St. Gallen and about one third in the canton of Glarus. Its na ...

through six short tunnels originally built for a railway. The railway now runs through the long Kerenzerberg Rail Tunnel, which is roughly parallel to the road tunnel. Transportation of

dangerous goods Dangerous goods are substances that are a risk to health, safety, property or the environment during transport. Certain dangerous goods that pose risks even when not being transported are known as hazardous materials ( syllabically abbreviate ...

through the Kerenzerberg tunnel is prohibited.

References

External links

* Road tunnels in Switzerland Tunnels in the canton of Glarus Tunnels completed in 1986 {{Switzerland-struct-stub