PSI - Issue 44

Emanuele Renzi et al. / Procedia Structural Integrity 44 (2023) 1228–1235 Emanuele Renzi et al. / Structural Integrity Procedia 00 (2022) 000 – 000

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2.1. Regulatory framework The National Institute of Building Sciences, the first to apply Building Information Modeling to infrastructure; together with the Federal Highway Administration, has published four volumes dedicated to the implementation of information flows, processes and BIMmodels related to bridges digitization, in different design, construction and asset management contexts. In developing Bridge Information Modeling (BrIM) standards, as with any information standard, the main goal is to create interoperable, cyclical and federally shared processes. The successful adoption of BIM for infrastructure is a critical step towards a future of data-driven "smart" infrastructure. The FHWA brings together a task force to develop a strategic roadmap at the national level to advance the development and implementation of BIM for infrastructure. The National BIM Standards (NBIMS) Executive Committee defined the term Building Information Modeling (BIM) as "a shared knowledge resource for information about a structure that forms a reliable basis for decisions throughout its lifecycle." The AASHTO established the IFC as the national standard for the exchange of three-dimensional models and data (Fig. 1).

Fig. 1. (a): BIM Dimension for Infrastructures; (b): The scheme defines the relationships between the main standard (ISO 19650) and its national derivatives and the direct relationship with the IFC. Standardization at italian national level is achieved with the Smart Road Decree (2018), a provision that regulates the infrastructural adaptation to the so-called " digital transformation". The intent of the standard is to pay contemporary attention to infrastructure and traffic to make road mobility "shock resistant"; Smart Roads will be characterized by technologies, functions and services that intervene in the maintenance and management of the infrastructure, improving its effectiveness, decreasing costs throughout the entire life cycle and increasing resilience. The decree extends, for the first time in Italy, the application of BIM to linear transport infrastructures. The issuance of the Guidelines for risk classification and management, safety assessment and monitoring of bridges , adopted with Ministerial Decree no. 578 of 17/12/2020 for infrastructure works managed by Anas S.p.A. or by highway concessionaires, represents the first step towards BIM models of existing bridges. One of the main priorities of our country is the safety of road and highway infrastructures, as a fundamental element of their sustainability. Therefore, from the regulatory point of view, starting from the general principles set out in the Technical Standards for Construction since 2008 and the subsequent update of 2018, the Superior Council of Public Works in strong synergy with the Ministry, the technical-scientific world and companies, has developed specific and innovative Guidelines for the classification and management of risk, safety assessment and monitoring of bridges . ANSFISA has drawn up a guidance document containing indications on the operating methods, for the achievement of an effective application of the Bridges Guidelines adopted by the MIMS, approved by the CSLP with opinion 96/2021.