In 1841, Carl von Ghega was commissioned to plan a connection between Gloggnitz and Mürzzuschlag with the Semmering railway. It was a technically difficult project, originally the Semmering railway was to run through a short tunnel and along the Weinzettelwand, but after a rockfall in 1850 the line had to be re-routed. In the process, the route was moved into the mountain. Three tunnels were blasted - "Lechner-Tunnel", "Am Geierneste" and "Unter der Geierkirche" - for which the collective name "Weinzettelwandtunnel" was later coined. Construction work was finally completed in 1854, with the first locomotive crossing the Mürzzuschlag-Payerbach route on 23 October 1853.
The BIM project "Weinzettelwand Tunnel" started in 2022 and is now in its final phase. The original plans of the historic tunnel have now been digitised by iC experts. Point clouds were used to retain the realistic models with 3 levels of detail. As part of this ground-breaking project, an automated workflow was also developed for this type of modelling.
The special thing about this project, however, is above all the possibility of preserving this historical and cultural heritage for the future.
