You are here: Home NewsThe arch is taking shape: Interior work on the A9 Riedberg Tunnel.

Gampel

The arch is taking shape: Interior work on the A9 Riedberg Tunnel.

The Volken Group is currently working as part of a consortium consisting of Frutiger AG and Prader Losinger AG on the interior construction of this highway tube near Gampel-Steg. A self-compacting concrete is being used as the inner ring, which is AAR-resistant (chemical reaction that can lead to cracks) and can withstand frost and de-icing salt. The construction of the tunnel arch from around 73 m3 of concrete is challenging, as the entire pressure has to be absorbed by mobile formwork - a formwork carriage.

Back

Benefits with the Volken Group

Open to innovation

Everyone plays a part in our company. For us, new ideas drive progress.

Traditional family business

We are an owner-managed family business in its second generation. We have short decision-making processes and prioritise communication on an equal footing.

Safety first

We have well-established safety measures in place to protect our employees and the environment.