PSI - Issue 84

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ScienceDirect

Procedia Structural Integrity 84 (2026) 937–943

© 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) Abstract Sant’Ansano bridge on Road 2 “Lodovica” is a brick-built, five arches bridge, which partially collapsed due to the undermining of the foundation of a bridge’s column. As a result of this, the road surface has lowered and cracks have appeared, so the bridge has been temporarily closed to the road traffic. It’s been necessary to strengthen the lowered column and to make a safety evaluation, following Ministerial Decree no. 204/2022. III Fabre Conference: Existing Bridges, Viaducts, and Tunnels: Research, Innovation, and Applications Strengthening and safety evaluation of “Sant’Ansano” bridge, on Road 2 “Lodovica” P. Saletti a, *, A. Gioeli a , R. Mencarini a , M. Silvestri a , R. Guidi a , P. Del Debbio b a Provincia di Lucca b Senior Engineer, Lucca, Italy

Peer-review under responsibility of the scientific committee of the Conference Keywords: existing structure repair; foundation undermining; column strenghtening.

1. Classification of the structure and context Sant’Ansano bridge is located in Ponte a Moriano, a village under the administration of Lucca, Tuscany. It is a very important infrastructure for Lucca’s Province road network. The bridge is at Km 0+150 of S.P.2 road, named “Lodovica”, over Serchio river, strategically linking the Lucca plain to Serchio Valley and Garfagnana. It’s an historical bridge of five arches characterized by a brick and stone built supporting structure, typical of Lucca’s country infrastructural engineering (Fig.1).

* Corresponding author. E-mail address: pierlugi.saletti@provincia.lucca.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.2026.06.120