Implenia and Frutiger win construction contract for Sisikon tunnel
The consortium of Implenia and Frutiger has been awarded the contract to build the Sisikon Tunnel. The tunnel construction is part of the Neue Axenstrasse project and includes extensive underground engineering works. Construction will start in mid-2025 and is expected to be completed by 2034.
The consortium (ARGE) of Implenia and Frutiger has been awarded the contract to build the Sisikon tunnel. According to a press release, the joint venture of the cantons of Schwyz and Uri has awarded the contract for lot 200 to the consortium led by Implenia. The contract is worth 430 million Swiss francs, resulting in a volume of 250 million Swiss francs for Implenia. The tunnelling is part of the New Axenstrasse transport infrastructure project.
The core of the construction work is the single-tube, 4.4 kilometre long road tunnel with two-way traffic, which will be built by drill and blast. The consortium is also building underground structures such as access tunnels, diversion points, ventilation centres and exhaust shafts. This work will be followed by civil engineering works such as the construction of a large gallery to protect against natural hazards. The up to seven simultaneous tunnelling points and very tight space conditions are considered to be particular challenges. “We will be able to contribute our extensive expertise and experience in tunnelling and civil engineering,” says Christian Späth, Head Division Civil Engineering at Implenia. Due to its size and complexity, Lot 200 forms the centrepiece of the new road section on the eastern shore of Lake Uri and Lake Lucerne.
According to the press release, construction work will start in mid-2025 and is scheduled to end in 2034.