New Bözberg Rail Tunnel: Start of Construction in Spring 2016

The Gotthard axis is to be extended to become a 4 metre corridor, so that in future semi-trailers with a corresponding 4-m corner height can also be transported. This will assist freight traffic crossing the Alps to be relocated from road to rail. The biggest part-project of this scheme is to replace the existing 2.16 km long, two-track Bözberg Tunnel in the Canton of Aargau with a new 2.6 km long tunnel also possessing two tracks. The main job was awarded by the SBB to Implenia in July. The contract is worth some 145 million Swiss francs.

The new tunnel’s northern portal is located at Effingen and the southern portal at Schinznach-Dorf. The main drive will take place from the southern portal using a tunnel boring machine. The tunnel muck will also be removed from a rail loading station set up there – in order to avoid the need for almost 57 000 lorry loads of material being carried via the cantonal roads. Building is scheduled to start in spring 2016 and the tunnel is intended to open in 2020 following a construction period of around four years. Apart from the track, the contract also includes the rail technology. In addition, the existing, two-track tunnel, which is not capable of accommodating a 4-m corner height, will be converted into a service and rescue tunnel with five cross-passages leading from the new to the old tunnel. The redevelopment scheme is scheduled to be completed by late 2022. G. B.


Related articles:

Issue 2011-07 Germany

Redeveloping the Schlüchtern Tunnel

The New Schlüchtern Tunnel is nearly 4 k m long and possesses 9 m internal diameter. It was driven using a tunnel boring machine (TBM) at a distance of 50 to 90 m from the existing tunnel [1-4]. As...

Issue 2017-08 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...

Issue 2014-03 Switzerland

Gotthard Base Tunnel: Start of Trial Services

When it opens the 57 km long Gotthard Base Tunnel between Erstfeld in the Canton of Uri and Bodio in Ticino will be the world’s longest rail tunnel. Its two single-track tunnel bores are linked with...

Issue 2011-04 Austria

Arlberg Tunnel again 2-Track

An extensive safety-technical project by the ÖBB Infrastruktur AG has been concluded following 6 years of work for the Arlberg Tunnel has now bee operational again on a 2-track basis since December...

Issue 2014-03 Germany

Schlüchtern Tunnel: Two Bores for a busy Rail Route

The 3,576 m long Old Schlüch- tern Tunnel on the main line between Frankfurt and Fulda was opened in 1914. With a total of 260 passenger and goods trains daily it was one of Germany’s busiest rail...