New Pforzheim Tunnel to be completed by 2025

The 903 m long Pforzheim rail tunnel, constructed from 1858 to 1860 between Ispringen and Pforzheim on the Pforzheim–Mühlacker line, most recently underwent refurbishing in 1984 and is now to be replaced; a new tunnel is currently under construction, using underground tunnelling methods, and will take the form of a waterproofed structure running parallel to the old tunnel. Low-impact, low-vibration tunnelling employing a partial-face excavation machine has been selected, in view of the close proximity of the existing bore. The new bore will have a length of 909 m and will be of double-track...