Rüteli tunnel roofing
Facts and Figures
| Company | PORR SUISSE AG |
| Principal | Canton Zurich, Construction Office |
| Location | Mettmenstetten - Switzerland |
| Type | Structural engineering |
| Runtime | 09.2005 - 02.2007 |
1.5km long open-cut tunnel.
The roofing of the A4 tunnel at Rüteli in Mettmenstetten was completed by means of surface excavation. The tunnel, with its double-arch profile, is 422m long and 32m wide. Concreting was completed in the course of 28 one-week stages of 15m each. A 170m-long supporting wall was constructed to the east of the southern entrance to provide noise protection for the town of Mettmenstetten.
Double lasts better.
Southern entrance with supporting wall to the east, as noise protection for Mettmenstetten.
© PORR
Planned targets achieved.
The tunnel was completed in 28 weekly stages.
© PORR
Arched formwork.
A total of 1,400 tonnes of steel reinforcing material was used in the Rüteli tunnel-roofing project.
© PORR