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Bridge Health Monitoring Products

Aging infrastructure including bridges may require monitoring of structural components to notify bridge inspectors and managers in the event that these components are compromised. Cost-effective, accurate and easy-to-use measurement systems can identify potential failure mechanisms.

ETI offers a variety of bridge health measurement techniques because each bridge has its own unique structural issues. Regardless of the technique used, each system will provide automated notification on a 24/7 basis to alert responsible bridge safety personnel.

Bridge Monitor (BrMo-20) Master Unit

The Master Unit typically includes a data logger, communications module (cell, satellite or radio) stream water level, battery and solar panel.  Data from the Master Unit is received and stored on the Bridge Monitor Cloud Server for access and display. The following structural health monitoring techniques are all tied into the Master Unit for real-time measurement and data transmission to the Cloud Server.


Accelerometers are sensors deployed to measure the vibration of structural components including the deck, piers, abutments and footings. These sensors can detect seismic activity, vehicle collisions and component failure.

Deflection and Load

Strain gauges are deployed to measure the relative position and loading of structural components.  High vehicle loads and self-weight will cause strain and deflection of structural members.


Tilt sensors and magnetometers are deployed to measure movement of structural components over time.  These sensors are particularly useful to measure bearing displacement of load members and load transition connections.

Video Cameras
Video cameras are used to monitor the real-time aspects of a brdige including structural components, river levels and vehicular traffic.


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