Fröschnitzgraben Tunnel Section

With around 13 kilometres the Fröschnitzgraben section in the middle of the Semmering Base Tunnel is the longest.

Construction work in the cavern in Fröschnitzgraben.

ÖBB-Infrastruktur commenced construction in 2014. From the Fröschnitzgraben access shaft south of Steinhaus am Semmering the tunnel driving is taking place in two directions.

The approximately four kilometre-long section towards Mürzzuschlag is being created with excavators and blasting; the approximately nine kilometre-long section towards Gloggnitz with two tunnel boring machines. The excavated material is taken to the nearby landfill site at Longsgraben.

For the Fröschnitzgraben access shaft, two shafts more than 400 metres deep and around ten metres in diameter were built. At their foot is a cavern - a gigantic underground construction site. The construction of the tunnel tubes will start here in 2017. Later on, the cavern will become an underground emergency stop.

Panoramablick auf Fröschnitzgraben

Panoramablick auf die Deponie

Construction work in Grautschenhof.

Grautschenhof
Tunnelabschnitt

Train near the portal Mürzzuschlag.

Mürzzuschlag
Portalbereich

Preparatory work in Gloggnitz

Gloggnitz
Portalbereich

View of the portal and the bridge in Gloggnitz.

Gloggnitz
Tunnelabschnitt