The pilot project was intended to show that the production and installation of PP fibre concrete with the necessary quality is possible under site conditions.
The construction work for the Bühl Tunnel was awarded to Ed. Züblin, Stuttgart in September 2011. 32 months was earmarked for the roughwork.
At present the main traffic artery in the south of Siegen is formed by the B 62. The traffic on this federal road is greatly hampered by traffic lights and a large number of junctions and intersections. Thanks to the planned southern route end section of the B 54/62n...