Rüteli tunnel roofing
Daten und Fakten
Firma | PORR SUISSE AG |
Auftraggeber | Canton Zurich, Construction Office |
Stadt/Land | Mettmenstetten - Schweiz |
Projektart | Structural engineering |
Bauzeit | 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.