Joint Venture Gubri Wins Contract to Renovate Original Tubes of the Gubrist Tunnel

Zurich’s northern bypass, one of Switzerland’s most heavily used roads, is currently being expanded, with a third tube being added to the Gubrist tunnel. On completion of this new tube, the original two tubes, operational since 1985, are to be completely renovated. The Gubri joint venture, a partnership between Implenia (40%, lead), Walo Bertschinger (30%) and Anliker (30%), has won the contract from the Federal Roads Administration (FEDRA) for the third section of this renovation.

Total Contract is Worth 177 Million Euros

The total contract is worth 177 million euros. The project starts with preparatory work in autumn 2022 and will last about four years.

The existing tunnel tubes are no longer big enough to accommodate today’s traffic, so they are being enlarged: the road surface is being lowered by 30cm and the new suspended ceiling is being made higher. In order to increase safety standards, 22 new emergency bays are being built into the second tube, while the 24 emergency bays in the first tunnel are being renovated.

All of this work will be carried out with a special focus on occupational health and safety, and sustainability. The confined space in and around the tunnel presents a particular challenge for site logistics, and especially for delivery and removal of materials.


Related articles:

Issue 03/2018 Switzerland

Gubrist Tunnel, Third Bore

The 3.3 km long Gubrist Tunnel is part of Zurich’s North Bypass between the communities of Weiningen and Regensdorf. The road tunnel began operating in 1985 and possesses two separate directional...

Issue 02/2018 Switzerland

Gotthard Road Tunnel: Second Tube to be built from 2020

Following a resolution by the Swiss Federal Council dated October 25, 2017, the Federal Roads Office (FEDRO/ASTRA) will draw up a plan for executing the second Gotthard Road Tunnel tube, which will be...

Issue 05/2016 Switzerland

Belchen Tunnel Rehabilitation: Excavation with Switzerland’s biggest TBM Diameter

Altogether 500 million Swiss francs will be invested for redeveloping the 3.2 km long Belchen Tunnel.  The scheme began in 2015. A JV comprising the companies Marti Tunnelbau, Marti Basel und Marti...

Issue 02/2021 Switzerland | Schweiz

2nd Gotthard Tube: Access Shaft Contract Awarded

In mid-March 2021, the Swiss Federal Roads Office (FEDRO) has awarded the 86.6 million Swiss francs (78.5 million euros) contract to build a 4 km access shaft for the second Gotthard tube (Lot 243)...


Porr Infra to kit out Germany's second-longest Road Tunnel

In the course of the new construction of the 5.2-km-long section of the A44, the two-tube Hirschhagen tunnel will play a leading role in traffic technology. The lot has a length of around 4.2 km...