Constitution of 1812 Bridge (analysis)

A detailed assessment of the condition of an object.


Element type
"The bridge is monitored, since the construction, with 424 sensors, most of them static but some dynamic.

The static system consists of 154 strain gauges embedded into the fresh concrete, 127 strain gauges on the steel surface, 55 thermocouples, 17 tiltmeters, 40 load cells in the stay cables, and 4 sensors on bearings at the piers. Every five minutes, all these parameters are recorded. 19 accelerometers, 4 anemometers, and another 4 weather vanes integrate the dynamic monitoring system, which is triggered automatically when certain threshold values are exceeded.

To assess the structural behavior, the measurements are compared with the theoretical values and its evolution is lookout. Moreover, the wind measurements are used to regulate the traffic on the bridge."
Case type
Initiation of assessment
Anticipated change of design working life, Other
Predominant verification type
Design value criteria
Predominant verification scale
Structural system
Structural analysis
Serviceability limit state, Other
Information updating
Direct bayesian, Direct non-bayesian
Physical intervention
Operational intervention
Maintenance, Monitoring

Other initiation of assessment: Control during construction and surveillance during service life

Other verification scale: Structural System wind effects on traffic

Structural analysis_4: Proxy limit state (e.g. corrosion initiation)