Austria
Tunnel
3D sensor
Following a truck fire in the Brentenberg Tunnel on the Tauern Autobahn (A10), extreme heat caused massive damage to the tunnel lining. Since this is one of Austria’s most critical transportation routes, the operator, ASFiNAG, faced intense time pressure to restore traffic flow. Without precise condition data, a complete closure lasting several months loomed. For safety reasons, however, the traffic artery had to be closed immediately, as the exact extent of the structural damage was initially completely unclear.
In order to reopen this economically critical major transportation corridor to traffic as quickly as possible, ASFiNAG needed reliable structural data for a structural assessment without delay. What was required was a permanent monitoring system for the damaged arch blocks that was ready for immediate use. This system had to transmit precise measurement data wirelessly and ensure automatic alerts as part of the safety management process.
In an immediate response to the fire, 3D sensors from SuessCo Sensors were installed at the affected block joints in the tunnel. The continuous measurements provided ASFINAG’s experts and structural engineers with precise real-time data on the structural behavior of the damaged structure, as well as a comprehensive digital overview that included an alarm function triggered when threshold values were exceeded.
Thanks to the rapid availability of data, the structural integrity was conclusively verified, and the tunnel was provisionally reopened after just six days. Operations benefited from maximum efficiency, as neither traffic flow nor the concurrent repair work was disrupted. The sensors supported operational safety and rapid remote restoration.
Following a tunnel fire, SuessCo Sensors’ FlexCo 3D sensors were deployed to monitor the affected tunnel arch segments. Continuous monitoring enabled temporary operation to continue until final repairs were completed. As part of the safety management plan, alarm thresholds were defined, and a specific group of individuals would have been notified via email and SMS if the alarm threshold was reached. The system stands out for its precise measurements and the wireless remote transmission of measurement data to a portal that experts can access at any time without disrupting operations.
Reinhold Czizsek, Engineer
Asset Management, ASFINAG Bau Management GmbH
During the consultation, we’ll determine which sensors are right for your project and how quickly they can be installed. No obligation, no preparation required.
