PSI - Issue 84

Federico Foria et al. / Procedia Structural Integrity 84 (2026) 296–303

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Figure 5. (a) a point cloud as retrieved from the Mobile Mapping Survey; (b) priority map extracted from MIRETS.

5. Discussion and conclusions The integrated MIRETS Hydrogeological Mapping approach, combined with mobile surveys and AI-driven tunnel diagnostics, provides a concise, evidence-based method to prioritize interventions and support risk classification for railway infrastructure, also in accordance with standard national regulations framework. These case studies represent early applications of advanced, integrated digital technologies, and ongoing systematic testing will further improve the efficiency of the survey, analysis, and diagnostic workflow for continuous surveillance. References Bergeson, W., Ernst, S., 2015. Tunnel operations, maintenance, inspection, and evaluation (TOMIE) manual. Federal Highway Administration, Washington, DC, Report No. FHWA-HIF-15-005. Foria, F., Avancini, G., Ferraro, R., Miceli, G. & Peticchia, E., 2019. ARCHITA: an innovative multi-dimensional mobile mapping system for tunnels and infrastructures. MATEC Web of Conferences 295, SUS - Lille 2019. Foria, F., Calicchio, M., Panico, F., 2025. Technical, legal and sustainability analysis of AI software to pre-assess inspection Big Data: MIRET Tunnel AI. ITA-AITES World Tunnel Congress, WTC2025, Tunnelling into a Sustainable Future – Methods and Technologies, Stockholm. Foria, F., Di Meglio, M., Calicchio, M., Brichese, M., Panico, F.E., Miceli, G., 2024. A Retrospective Analysis of Deep Learning for Tunnel Asset Management: Balancing Efficiency, Ethics, Sustainability, and Security in the MIRET Framework. IEEE MetroXRAINE (2024). Higher Council of Public Works (HCPW), 2022a. Guidelines for the classification and risk management, safety assessment, and monitoring of existing bridges. Technical Guidelines, Ministry of Infrastructure and Sustainable Mobility, Rome, Italy, July 2022. Higher Council of Public Works (HCPW), 2022b. Guidelines for the classification and risk management, safety assessment, and monitoring of existing tunnels. Technical Guidelines, Ministry of Infrastructure and Sustainable Mobility, Rome, Italy, July 2022. Leto A.D., Simoni L., Gibin F., Gabrieli F., Scala A., Brezzi L., 2025. Comparative analysis of international regulations on landslide risk assessment and management for bridges and viaducts. Proc. of the 9th International Symposium on Geotechnical Safety and Risk (ISGSR). Edited by Zhongqiang Liu, Jian Dai and Kate Robinson. Published by Research Publishing, Singapore, doi: 10.3850/GRF-25280825_isgsr-117-P078-cd, pp. 549-553. U.S. Department of Transportation – Federal Highway Administration, 2005. Unstable Slope Management Program (USMP): Reference Manual. Federal Highway Administration, Washington, DC, USA. U.S. Department of Transportation – Federal Highway Administration, 2015. National Tunnel Inspection Standards (NTIS) (23 CFR Part 650). Washington, DC, USA. U.S. Department of Transportation – Federal Highway Administration, 2022. National Bridge Inspection Standards (NBIS), 23 CFR Part 650, Subpart C. Washington, DC, USA.