Commencement of tunnelling works of the Herrschaftsbuck Tunnel in Rheinfelden

The construction of an important element of the Upper Rhine Motorway, the A 98 motorway was started on the 27 July 2017 with the solemn commencement of tunnelling works of the Herrschaftsbuck Tunnel.

The Federal Government contributed around EUR 85 million and the State of Baden-Württemberg EUR 9 million to the total investment. The cost of the building shell construction is around 38 million euros. The two tunnel bores, each 480 meters long, will be completed in June 2019. KREBS + KIEFER is responsible for the safety and health coordination of this project.

The tunnel is started in the closed construction technique by means of a mixed process consisting of excavation and blasting in the "New Austrian Tunnelling Method". Particular challenges in the creation lie in the comprehensive complexity of the mining works.

The section of the A 98 motorway with the Herrschaftsbuck Tunnel is currently the only new motorway construction in Baden-Württemberg. It crosses over almost the entire administrative district of Freiburg. After completion, the two-bore tunnel will lead road traffic from the East - West connection of the A 5 motorway to the A 81 motorway to Switzerland. The connection will promote the infrastructure in the border area to Switzerland, as stated in their official speeches by Minister of Transport, Winfried Hermann, a Member of the Regional Parliament and Mr Norbert Barthle, Parliamentary Secretary of State from the Federal Ministry of Transport and Digital Infrastructure and Mrs Bärbel Schäfer, the President of the Freiburg Administrative Region.