Gubrist Tunnel Rehab Lot 3 - Carriageway & Service Duct Repair

Kontrakt tildelt. Verdi 178 MNOK

The Gubrist Tunnel Rehabilitation Lot 3 is part of the N01/38 expansion of the Zurich northern bypass, focusing on the repair and upgrade of the 1st and 2nd tunnel tubes. This includes the removal and replacement of the existing carriageway and verges, along with the construction of a new lowered carriageway and a service duct (WELK). The contract was awarded by the Federal Roads Office (FEDRO) to the GUBRI consortium, led by Implenia with partners Walo Bertschinger and Anliker, with a construction volume of CHF 178 million.

Omfattende riving og rehabilitering

Key construction activities encompass demolition of the worn carriageway slabs, new service duct construction executed via a cut-and-cover method in the Weinigen surface mining area, replacement of roadway slabs at portal stations, and installation of critical infrastructure such as cables, extinguishing water pipes, SOS niches, and ventilation cross-connections. Approximately 127,000 m² of tunnel walls will undergo concrete repairs, and about 58,000 m² of surface protection systems will be renewed.

Strenge logistikk- og sikkerhetskrav

The project faces significant logistical and safety challenges, including restricted access to the 2nd tunnel tube located between the 1st and 3rd tubes, maintaining safe escape routes for road users despite ongoing construction, and ensuring functionality of the overpressure ventilation system during tunnel operation. Work is coordinated carefully with 2-shift operations from 06:00 to 22:00 to manage material handling and maintain traffic safety.

Bygging 2023-2027. Langsiktig sikring

Construction began in July 2023 and is planned to be completed by March 2027. The project is managed by a consortium of construction managers including IG Gubrist 1+2, Gähler und Partner AG, Rothpletz, Lienhard + Cie AG, and Pini Group SA on behalf of the Federal Roads Office ASTRA. The rehabilitation ensures the long-term safety and serviceability of an essential section of the Zurich northern bypass, benefiting regional traffic flow and infrastructure reliability.