Two new tunnels had to be built for the new line: the one going through the Lorettoberg and the one beneath the Sternwald. The eastern border fault of the Upper Rhine Plain goes through the Lorettoberg. It can be seen through a ‘window', which has been left open whilst bricking the tunnel so the further subsidence can be measured. In the course of the construction works, the line from the central station to Wiehre was increased to two tracks. The former trainstation Alter Wiehre Bahnhof (Old Wiehre Station) is now used for cultural activities, for example as a building for film and literature with the ‘Kommunales Kino Freiburg' (municipal cinema Freiburg), the 'Literaturbüro Freiburg' (lit.: literature office Freiburg) and it also houses a café.