Switzerland

Eppenberg Tunnel: Successful Breakthrough early February 2018

An important milestone for the continuous four-track east/west axis in Switzerland has been accomplished: The tunnel boring machine has finished the 2600 m long tunnel through the Eppenberg in its carcass state following roughly a year’s construction time. The breakthrough took place in Gretzenbach. As a result, the half of the 855-million-franc project “Olten-Aarau four-track upgrade” has been accomplished.

Around 200 invited guests experienced the successful breakthrough in Gretzenbach in early February. Anna Barbara Remund, vice-director of the Federal Office of Transport (FOT), Philippe Gauderon, the head of SBB Infrastruktur, Stephan Attiger, state councillor of the Canton of Aargau and Roland Fürst, state councillor of the Canton of Solothurn took advantage of the occasion to underline the project’s significance for the strong East/West Axis.

Construction on the “Main Artery”

Like all such projects, which must be tackled while train services continue to operate, the Eppenberg Tunnel represents a complex “operation on the main artery” for the SBB. Around 550 trains per day make the route one of the busiest in Switzerland. The SBB wants to complete the four-track upgrade within a six-year construction period. As things stand SBB reports that the project is on track both in terms of time and costs.

After the breakthrough at the Eppenberg, it will take roughly a year to furnish the tunnel with ultra-modern rails, sleepers and ballast. When the new timetable comes into force in late 2020, the four-track upgraded section is scheduled become operational.

Related articles:

Issue 01/2015 Switzerland

SBB awards Contract to build the Eppenberg Tunnel

The SBB (Swiss Federal Railways) awarded the main contract section for the four-track upgrading of the Olten–Aarau route in November 2014. The contract worth some 274 million Swiss francs was awarded...

more
Issue 02/2015 Switzerland

Ceneri Base Tunnel: Drive towards the South completed

On March 30, 2015, the tunnellers broke through the final few metres of the Ceneri Base Tunnel’s east bore between Sigirino and Vezia. Some two weeks after the first breakthrough in the west bore on...

more
Issue 08/2017 Switzerland

Breakthrough at the Bözberg Tunnel

An important milestone for the 4 m corridor: On 29 November 2017, the tunnel boring machine broke through the last few metres of the Bözberg in Effingen. Due to the presence of unstable rock at the...

more
Issue 04/2018 Germany

S 21: Breakthroughs in the Obertürkheim and Feuerbach Tunnels

The DB Projekt Stuttgart–Ulm GmbH completed its second breakthrough during the construction of the Obertürkheim Tunnel on June 21. The tunnel’s west tube had been accomplished back in March 2017....

more
Issue 04/2011 Switzerland

Biel east bypass link: TBM tunnelling and the Längholz Tunnel

The Autobahn A5 Biel bypass in the Canton of Bern closes one of the last remaining gaps in Switzerland‘s national road system, and is subdivided into a west and an east link, both around 5?km in...

more