Abstract The BH 25 steel truss railway bridge in Garut, Indonesia, exhibited a deviation from its intended camber during construction, raising concerns regarding its structural performance. This study presents an integrated assessment combining full-scale static and dynamic load testing with calibrated finite element modelling. A 90-ton CC206 locomotive was used to evaluate deflection and dynamic response. While the bridge satisfies serviceability requirements, a reduction in global stiffness is identified from its vibration characteristics. To mitigate this issue, an external prestressing system was implemented as a strengthening measure. The results confirm that the proposed intervention effectively restores camber and enhances dynamic performance. The study highlights the value of integrating field measurements with validated numerical modelling within a unified framework for both assessment and strengthening evaluation. This approach provides a practical basis for performance-based rehabilitation of steel railway bridges under operational conditions.
Sumargo et al. (Fri,) studied this question.
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