📋 Tender Overview
Hardly any moment in tunnel construction is more important than the breakthrough i.e. when a tunnel section has been dug and the last meter has been covered in the mountain. The first breakthrough has now been made in the Semmering Base Tunnel which connects two construction sections - those between Gstritz and Frschnitzgraben.A very special situation arises in Gstritz because the miners encountered the Carl tunnel boring machine that was still in the tunnel in the Frschnitzgraben section. This is currently being dismantled piece by piece with the front part the drill head being dismantled last. A narrow passage in the cutting wheel nevertheless made it possible for miners from the two construction sections to meet in the tunnel for the first time a result of years of hard work.Project manager Gerhard Gobiet Congratulations to the executing companies and especially to the miners. Around seven years after work began on the Gloggnitz section a first major milestone has been reached on the way to completing the Semmering Base Tunnel. This is a very special moment for all of us involved in the construction. The first connection of two sections has been completed and more than 24 kilometers of tunnel have been completed. It is a day of joy but there is still a lot of hard work ahead of us. The construction work in the Gstritz section is progressing very well 1578 meters were driven in the completed tube. In the second tube in the direction of Frschnitzgraben there is only less than 400 meters to go before the second breakthrough. There are still around 300 meters to dig in the direction of Gloggnitz. In the Gloggnitz area tunneling work has recently resumed following the extensive special measures. Due to the extremely difficult geology in this section around 900 meters still have to be covered. Almost 90 of the tunnel is dugMore than 24 kilometers of the 27.3 kilometers of the twin-tube tunnel have already been dug. The tunnel is being built from five locations and a total of 14 drives simultaneously. Five of the 14 drives four in Frschnitzgraben one currently in Gstritz have already been completed. In 2020 the interior fit-out of the tunnel tubes also began. The tunnel is lined with a concrete inner shell around 7 km have been built so far. After completion of the inner shell the last step is the technical tunnel equipment tracks lines technical systems before the trains can finally run through the tunnel.
