Gampel

Everything cast from a single mold in 18 hours: Riedberg tunnel portal

After eight years of construction, the two 500-metre-long tunnels through the Riedberg are due to open at the end of 2024. The A9 structure serves as a bypass at the Gampel/Steg railroad station bottleneck. The Volken Group recently completed the first portal block together with ARGE Tunnel Riedberg - in just 18 hours, using 372 m3 of concrete from powerful truck mixers, a 36 m truck-mounted concrete pump and other heavy equipment. The challenge here was to reduce the formwork pressure due to the immense component thickness and to complete the portal in a single pour.

Benefits with the Volken Group

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.

Effective networks

We maintain strong relationships with partners, suppliers and customers.

Open to different cultures

Our teams consist of people from all over the world who work hand in hand with one another.