DE
This time, it wasn't the ministers and mayors with the construction companies Storz and Eiffage Infra-Süd who turned the shovels for the ground-breaking ceremony, but the toy excavators of the local kindergarten children were allowed to get to work and start the first earthworks.
Both road users and residents in the Lake Constance region will benefit from the construction of the Röhrenberg Tunnel. The holiday region is also focussing on climate-friendly construction, e.g. through the use of a special floor covering.
The tunnel will be built with two tubes using the cut-and-cover method and enclosed on both sides by 30-metre-long portal structures. The shell is due to be completed in mid-2028, meaning that traffic is expected to be able to flow in autumn 2029 once the operating technology has been installed.
The tunnel is part of an overall project to build and expand the B33 between Allensbach and Constance over a length of 10.6 kilometres. The entire construction is scheduled for completion by 2035.
