Exploring different advanced NDTs for the evaluation of residual prestressing of a half‐joint PRC bridge

Abstract Post‐tensioned Gerber bridges represent a critical component in transportation networks, combining structural efficiency with ease of construction. However, their complex mechanical behaviour and the effects of long‐term loading demand advanced methodologies for accurate assessment and maintenance. This work provides some insights in using advanced NDTs for the evaluation of residual prestressing of the ‘Unità d'Italia’ bridge, located in Verona, a half‐joint PRC bridge. Considerations related to the effectiveness of the analytical process, and future implications for similar bridge types are provided in order to give practitiones useful guidelines when dealing with the structural assessment of similar structural types, supporting more informed decision making in the management of post‐tensioned Gerber bridges within the frame of Level 4 analysis within the Italian Guidelines for Assessment of Existing Bridges (2022).