Kistler Shows a Fully Digital, Daisy-Chained Bridge Monitoring System

Kistler presented its first fully digital structural health monitoring solution for bridges at Intertraffic Amsterdam, held from 10 to 13 March 2026. The system covers strain, displacement, crack width, vibration, inclination and temperature using digital sensors grouped in flexible clusters with microsecond-level synchronisation across channels.

The architectural choices are aimed at a specific cost. Sensors can be wired in daisy chain or star topology, are self-configuring, and expose open interfaces for third-party sensor integration, with data processed on a dedicated edge industrial PC. Kistler positions the digital architecture as cutting setup time and installation cost relative to analogue structural monitoring wiring.

That framing is the right one. In civil structural monitoring the sensors are rarely the expensive part. The cost sits in cabling a structure that was not designed to be cabled, in calibrating and commissioning each analogue channel, and in the access equipment needed to reach the places where the sensors go. A daisy chain reduces cable runs; self-configuring sensors reduce commissioning; microsecond synchronisation across clusters is what makes the resulting measurements comparable rather than merely simultaneous-looking.

For anyone working in industrial IoT the architecture is familiar: digital sensor bus, edge industrial PC, open interfaces, analytics above. It is close enough to a plant gateway deployment that the same skills transfer, which is worth noting because civil infrastructure work is usually treated as a separate discipline.

Reference structures cited include the Washington Bridge in Providence, Rhode Island, the Sultan Abdul Halim Muadzam Shah bridge in Malaysia, and the Çanakkale Bridge in Turkey. Kistler pairs the monitoring system with its weigh-in-motion product line, which is a natural combination — knowing what crossed the bridge is a large part of interpreting how the bridge responded.