Felbertauern Tunnel

The Felbertauern Tunnel (German, Felbertauern) is a 5.2 km long tunnel in the Austrian Alps. The tunnel connects the Felber valley (in the north, region of Salzberg) with the Tauern valley (in the south, region of Tyrol).

Construction began in 1962, and the tunnel was opened in 1967. The term "Felbertauern" by itself often is used to include the approach roads on both ends, which were built as the same time as the tunnel.

Unlike most other tunnels in the Alps, the Felbertauern Tunnel has only one tube. The daily traffic through the tunnel is approximately 4,000 vehicles per day, with about 7% trucks. Bicycles are not allowed in the tunnel, but a bicycle transport service is available.

The total length of the Felbertauern Tunnel is 5,282 meters (5.2 km), making it one of the eleven longest tunnels in Austria. The Felbertauern Pass is at an altitude of 2,481 meters (2.4 km). It is open 24 hours a day, 365 days a year. Traffic in both directions must pay a toll at the toll booth at the southern portal. The approach roads are 7.5m wide.

History
The pass, also known as Felbertauern, has been in use for centuries. The first contacts between the tribes settling on both sides of the main ridge of the Alps date back to the 2nd millennium BC. Celts, Romans and Carolingians used this crossing. The movement of goods over the Felbertauern was particularly active in the Middle Ages. The transport of goods by horses and mules was an important factor at that time.

After a long break in the early Middle Ages, the Felber Tauern seems to have been used again from the High Middle Ages. This was certainly only the case after the German settlement and thus not before the 9th century – the pass and the valley have an Old High German name (from felwa = pasture). This name was first borne by a local noble family, the Lords of Felben, who owned a mighty residential tower in Mittersill and thus controlled the path early on.

From 1814 onwards, the unification of the court of Matrei, which originally belonged to the Principality of Salzburg, with Tyrol diminished the importance of the Felbertauern. Subsequently, many plans and ideas were pursued to restore the Felbertauern to its former importance, including the planning of a railway line or a Großvenediger High Alpine Road.

Between 1910 and 1912, the owner of Weißenstein Castle in Matrei had a drivable path built through the Prossegg Gorge, which is considered the forerunner of the Felbertauern Road. Since 1 April 1948, Iseltal Straße has been part of the network of federal highways in Austria.

In 1962 a five-year project began to build a 2-lane paved road and a tunnel, replacing the rudimentary road over the pass. In 1967, this new crossing of the Alps was completed, with an official opening on 25 June. The construction took 5 years, and included a 36 km long route - including a 5,313 m long tunnel and 31 km of approach roads.

After the official opening, major portions of the approach roads were completed. Including, for example, the bypass in Mittersill, and converting temporary stretches of the roads into 3-lane roads. Millions of euros were spent on the construction of avalanche protection structures.

Ownership
The Felbertauern Tunnel is owned by Felbertauernstraßen-AG, which in turn is owned 62% by Austria, and the remaining 38% is split between the state of Tyrol (37%) and the Tyrolean municipalities (1%).

The tunnel is not an autobahn (hence, is not operated by ASFINAG).