PSI - Issue 84

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ScienceDirect

Procedia Structural Integrity 84 (2026) 967–974

© 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the Conference Keywords: non-concessionary authorities; bridge management; priority index; limited resources. Abstract The safety and durability of existing bridges are major concerns for road authorities, especially those operating without concession revenues. This study presents the application of a multilayer methodology for bridge inspection, evaluation, and classification, specifically designed for non-concessionary authorities that must manage extensive networks with extremely limited resources. The procedure is articulated in four phases: (i) cataloguing and census of bridges to establish a comprehensive inventory; (ii) visual inspections and systematic recording of damages; (iii) evaluation of local and global damage indices, supported by coefficients reflecting age, structural scheme, and material degradation sensitivity; and (iv) classification through the computation of a Priority Index for intervention, integrating structural condition with territorial relevance and indirect damage potential. The methodology also introduces reliability indicators to account for data completeness and element observability. By combining technical condition assessment with traffic and network-related parameters, the approach provides a practical and scalable tool to support non concessionary road authorities in ranking maintenance priorities and optimizing the allocation of scarce resources across large bridge inventories. III Fabre Conference: Existing Bridges, Viaducts, and Tunnels: Research, Innovation, and Applications Management of bridges under the responsibility of non concessionary Authorities Rosario Montuori a, *, Umberto Bergamo a a Univerity of Salerno, Via Giovanni Paolo II – Fisciano (SA) 84084 - Italy

* Corresponding author. Tel.: +39 089 963421. E-mail address: r.montuori@unisa.it

2452-3216 © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the Conference 10.1016/j.prostr.2026.06.124