N02, EP Acheregg tunnel and Lopper viaduct
| Company | PORR SUISSE AG |
| Principal | Federal Roads Office [ASTRA] |
| Location | Hergiswil - Switzerland |
| Type | Rock technology |
| Runtime | 09.2009 - 12.2010 |
Safe travel ahead.
Before the PORR team was able to commence work on the safety measures required by this project, the rock face, which was heavily overgrown in places, first had to be cleared and cleaned. Then the required works could begin: the drilling and anchoring of the rock nails and anchors necessary for securing the safety nets. These works were carried out from scaffolding with only one lift for access.
More than 3,000m2 of steel mesh netting now protects the Lopperstrasse, between the Acheregg tunnel and the Lopper viaduct, from rockfall and avalanche.
For safe travels along the Vierwaldstättersee.
© PORR
Since the end of 2010, the lake-side road has been protected from rock fall and avalanche by more than 3,000m² of steel mesh netting.
© PORR
The initial stage of the project involved the clearing and cleaning of the partially-overgrown rock face.
© PORR