The invited guests followed the event on a big screen in the town hall of Thun, before using the new access from the Obere Hauptgasse to participate in the festivities in the cavern of the Schlossberg Parking.
Around 70 coworkers of the involved Marti companies, Marti Tunnelbau AG, Marti AG Bern and Marti Generalunternehmung AG, have participated in this project which captivates by its size and complexity. The construction site is located underneath the landmark of Thun, the Thun castle, and the city center.
Until the end of the excavation works, nearly 8'000 lorry drives will be required to transport the entire mass of rock from the two 80 meters long, 15 meters wide and 17 meters high caverns. 49'000 out of 51'000 cubic meters of rock from the Schlossberg have already been milled out, meaning that the major building site is on schedule. Up until now, the road header weighing 130 tons used 4'500 cutters for the two caverns. The excavation works will last until July 2017 and will be followed by the concreting of the parking level, the walls etc. Pedestrian connections to the Schlossberg and to the Obere Hauptgasse will be built until the opening of the parking garage that contains around 300 parking lots without any columns.