Challenges and innovation: Challenges faced is time frame for execution of refurbishment since full closure of the track is limited to 180 days. Works include complete replacement of invert fill, reconstruction of inner lining in the most critical parts, excavation of underground chambers and instalment of new equipment.
Basic information:
• Total length of tube: 7975,8 m (Slovenian part: 3602,7 m, Austrian part 4373,1 m
• Area of clearance profile – main tube: 45.16 m2
• Maximal overburden height: 950 m
• Longitudinal gradient: 2,7 ‰– 6,0 ‰
