General refurbishment of the tunnel chain between Inzersdorf and Schön

On Monday, 20 February, Asfinag will start the general refurbishment of the Upper Austrian A9 Pyhrn motorway between Inzersdorf-Kirchdorf and Klaus an der Pyhrnbahn. Until June 2025, four tunnels and their electrical safety installations will be repaired on the entire carriageway in the approximately nine-kilometre-long section, alternating on both lanes. These include the Tretter, Ottsdorf, Kremsurprung and Hinterburg tunnels. In the Ottsdorf tunnel, the tunnel ceiling has to be lifted due to the new ventilation technology. The work will last until June 2025.

Our Geodata Upper Austria branch was commissioned with the surveying work accompanying the rehabilitation of this construction project.