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The ÖBB‐Infrastruktur AG operates and maintains 246 tunnels and similar structures with an overall length of approx. 250 km. Nearly 150 of these structures are more than 100 years old, 35 of them are over 150 years old. Ageing processes, the impact of train traffic, ground conditions and environmental conditions are causing progressive damage to the tunnel linings, which – in order to maintain safe...
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