Projet
Gubrist Tunnel
Gubrist Tunnel
Regensdorf, Switzerland
The Nordring in Zurich is a bottleneck. A quarter of Switzerland’s overall congestion hours occur on this 10 km stretch. The A1 expansion of the Zurich northern bypass from four to six lanes is designed to eliminate the chronic bottleneck. In addition to the construction of the third tube of the Gubrist Tunnel, the Marti Gubrist consortium has worked on various subprojects along the entire route.
| Client | Bundesamt für Strassen ASTRA |
| Execution | Marti Tunnel AG |
| Construction period | 2016 – 2021 |
images
Facts & Figures
special features
- Geology: Mostly upper freshwater molasse (alternating layers of sandstone, siltstone, and marl)
- Driving operations for mining using roadheaders
- Calotte excavation with trailing side walls
Tunnel length
00
mEXCAVATION DIAMETER
00
madditional information
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