International: englishInternational: english
International: english
International: englishInternational: english
Australia: english
Australia: englishAustralia: english
Austria: deutsch
Austria: deutschAustria: deutsch
Canada: english
Canada: englishCanada: english
Czechia: český
Czechia: českýCzechia: český
Denmark: dansk
Denmark: danskDenmark: dansk
Finland: suomi
Finland: suomiFinland: suomi
France: français
France: françaisFrance: français
Germany: deutsch
Germany: deutschGermany: deutsch
Hungary: magyar
Hungary: magyarHungary: magyar
Italy: italiano
Italy: italianoItaly: italianodeutsch
Netherlands: nederlands
Netherlands: nederlandsNetherlands: nederlands
Norge: norsk
Norge: norskNorge: norsk
Poland: polski
Poland: polskiPoland: polski
Romania: românesc
Romania: românescRomania: românesc
Slovakia: slovenčina
Slovakia: slovenčinaSlovakia: slovenčina
Spain: español
Spain: españolSpain: español
Sweden: svenska
Sweden: svenskaSweden: svenska
Switzerland: deutsch
Switzerland: deutschSwitzerland: deutschfrançais
UAE: english
UAE: englishUAE: english
United Kingdom: english
United Kingdom: englishUnited Kingdom: english
USA: english
USA: englishUSA: english


Thun, Switzerland

The Allmend Tunnel has already been in operation for 46 years and showed various structural damages. With the renovation of the motorway section Thun-Nord - Thun-Süd, the tunnel will also be renovated.

The Thun Allmend Tunnel will be comprehensively refurbished as part of the A6 complete renovation of Rubingen-Thun-Spiez because various structural damages on the tunnel appeared.

The unfavorable loads transferred from the exisitng tank manoeuvre area on the tunnel has been taken into account during the preparatory work for the renovation. The exisitng tank manoeuvre area on the Allmend remains intact during the rehabilitation of the Allmend tunnel and crosses the traffic on bridges.

In order to protect the tunnel, a load-free layer had to be created to prevent deflections due to dynamic traffic loads (heavy vehicles). After the concreting, the Egcovoid® voidformer achieves this planned load release and provides permanent protection of the existing structures beneath.

Type of building:


Clients and Developers:

Bundesamt für Strassen ASTRA 

Building contractor:

ARGE Allmendtunnel Thun 



Project link:

Products used
Contact Contact

+49(0) 9427 189-0

Max Frank GmbH & Co. KG
Mitterweg 1
94339 Leiblfing