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The Sernigerbaach Viaduct in eastern Luxembourg carries the local A1 highway (European route E44) across the valley that shares its name. It consists of twin continuous-deck structures, each with eight spans. The total length of the bridge is 650 m.
While planning renovation works in 2012, the responsible engineers decided to make use of modern technology to facilitate measurement and evaluation work and thus optimise the planning. A structural health monitoring (SHM) system would be used to record and assess the bridge’s condition and performance during a one-year period.
The SHM system was used to record deck movements and rotations at both abutments, over a period of one year in order to obtain data for all seasons. The measured values were collected, classified and evaluated in the ROBO-CONTROL master station. Thereafter, relevant data was sent via GSM/GPRS to be viewed on the mageba web interface.
All movement and rotation data was correlated with temperature, which was also measured. This enabled the responsible bridge engineer to evaluate the structure’s behaviour, and verify its safe performance, avoiding the need for more extensive renovation works.
ROBO-CONTROL monitoring system
Displacement, inclination, temperature
Administration des Ponts et Chaussées