Pforzheim tunnel
Reconstruction of the Pforzheim tunnel, VE 03
![Pforzheimer_Tunnel(3)](/sites/wittfeld/files/styles/header_image_small/public/content/images/project/2018-06/Pforzheimer_Tunnel_3%5B1%5D.jpg?itok=VxjrasGk)
Client
DB Netz AG
Project volume
EUR 8.5 million
Construction time
09/2016 – 07/2019 (35 months)
Earthworks, drainage and track work as well as underground cable construction as part of the Pforzheim tunnel construction, including the slab track in the tunnel. A signal boom including foundations is to be erected in the Pforzheim preliminary cut.
• 1,800 m of slab track in 2-track tunnel
• 2,200 m of gravel track
• 4 x transitions slab track tunnel – gravel
• 2,600 m of concrete KK size III
• 2,200 m of deep drainage
• 1,100 m of DN 400 - 200 collection pipes
• 35 m of 2,200 sewer with storage capacity and overflow
• Various bored pile foundations for signals and overhead cable units
• 300 m of mass-spring systems under the slab track
• 25,000 m³ of soil replacement
![](/sites/wittfeld/files/styles/image_grid_landscape_small/public/content/images/2018-06/Wittfeld-Pforzheimer%20Tunnel_1_0.jpg?itok=NlUfCj3m)
![](/sites/wittfeld/files/styles/image_grid_landscape_small/public/content/images/2018-06/Wittfeld-Pforzheimer%20Tunnel_2.jpg?itok=MMnpvbTe)