Politecnico di Torino - Corso Duca degli Abruzzi, 24 - 10129 Torino, ITALY

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Generally, bridges are inspected by monitoring the conditions of its parts, especially those below, via non-destructing imaging means (such as cameras or the like). The acquired images are then processed to identify any structural defects or predict breakages/damage to the structure. It is evident that this inspection cannot be carried out by an operator supported by vehicles placed on the ground below the bridge, as most defects would not be detected due to the operator’s distance. Aerial systems (drones) can be an alternative, but usually constrained when it comes to continuous monitoring. Furthermore, some current systems provide for automated monitoring and inspection, using robotic means, presenting different solutions related to small or large systems. However, besides being particularly expensive, these solutions do not allow continuous monitoring of the status of the bridge.

Technical features

A bridge inspection and maintenance system for continuous monitoring and accurate image acquisition has been developed. This method is not influenced by the bridge type nor structure, or by the vibrations deriving from the vehicles crossing the bridge. By mounting a sliding platform equipped with one or more sensors below the bridge to be inspected, the inventors are able to acquire images around the clock, cutting-out the need for personal on site at all times. Thanks to this invention, it will also be possible to inspect hard to reach areas below the bridge in a continuous, safe and rapid manner.

Possible Applications

  • Bridge inspection;
  • Building and rig inspection.


  • Continuous monitoring;
  • Accurate and rapid image acquisition;
  • Not affected by external factors during operation.