The implementation of this construction phase places the highest demands on technology and logistics. Space is extremely limited in the narrow valley area, right next to the railway line and cycle path. A customized location must be set up for each piece of construction equipment, whether it be a mobile crane, concrete pump, or lifting platform. “No two meters of the bridge are the same,” emphasizes the project team.

700-ton crawler crane lays heavy plates with millimeter precision

Assembly is carried out at great heights under complex conditions and with the utmost precision: Heavy plates around 60 meters long and up to 14 centimeters thick, which reinforce the webs between the haunches, were laid with millimeter precision using a 700-ton crawler crane.

Despite the challenges, significant progress has already been made: the special civil engineering and earthworks have been completed, the pier work is in its final phase, and the first pylon is almost finished. In addition, the supporting structures from construction phase 2 have been successfully transferred to the third of a total of four construction phases.

The bridge is being constructed as a six-span continuous girder with three striking V-shaped pylons, each braced with stay cables. The foundations are mainly being laid using large bored piles with a diameter of 1.50 meters and depths of up to 40 meters.