Selected results from the investigation program of a historic R.C. bridge are presented in the paper. The bridge, crossing the Adda river between the Municipalities of Brivio and Cisano Bergamasco, consists of three tied arch spans, about 44.0 m length each, and represents a crucial node for the vehicular traffic of the region. After a maintenance intervention performed on one pier, the local Authorities committed to Politecnico di Milano an extensive investigation including: (i) documentary research and review of the bridge history; (ii) visual inspection and geometric survey of each span; (iii) full-scale load tests and ambient vibration tests; (iv) FE modelling of each span and validation of the numerical models (through comparison with the available experimental results) and (v) structural assessment of the bridge in its present condition. After a concise review of the bridge history, the paper summarizes the complete results of the experimental tests performed on one span (visual inspection, geometric survey, full-scale load tests and dynamic tests) as well as the development of numerical models.

Full document

The PDF file did not load properly or your web browser does not support viewing PDF files. Download directly to your device: Download PDF document


[1] Gentile, C. Modal and structural identification of a RC arch bridge. Struct. Eng. Mech. (2006) 22(1): 53-70.

[2] ICOMOS/ISCARSAH Committee. Recommendations for the analysis, conservation and structural restoration of architectural heritage (2005). https://www.icomos.org/en/documentation-center.com.

[3] Zonno, G., Aguilar, R., Boroschek, R. and Lourenço, P. B. Analysis of the long and shortterm effects of temperature and humidity on the structural properties of adobe buildings using continuous monitoring. Eng. Struct. (2019) 196: 109299.

[4] Saisi, A., Gentile, C. and Ruccolo, A. Continuous monitoring of a challenging heritage tower in Monza, Italy. J. Civ. Struct. Health Monit. (2018) 8(1): 77-90.

[5] Deger, Y., Cantieni, R. and Pietrzko, S. Modal analysis of an arch bridge: experiment, finite element analysis and link. In proceedings-spie the international society for optical engineering (1994), pp. 425-425

[6] Sena-Cruz, J., Ferreira, R. M., Ramos, L. F., Fernandes, F., Miranda, T. and Castro, F. Luiz Bandeira bridge: assessment of a historical reinforced concrete (RC) bridge. Int. J. Archit. Herit. (2013). 7(6): 628-652.

[7] Türker, T. and Bayraktar, A. Structural safety assessment of bowstring type RC arch bridges using ambient vibration testing and finite element model calibration. Measurement (2014) 58: 33-45.

[8] Santarella, L. and Miozzi, E. Italian bridges in reinforced concrete (in Italian). Hoepli, Milan (1924).

[9] Decreto Ministeriale 10 Gennaio 1907 (in Italian), Gazzetta Ufficiale 2 Febbraio 1907 n.28 (1907).

[10] Ferrari, R., Froio, D., Rizzi, E., Gentile, C. and Chatzi, E.N. Model updating of a historic concrete bridge by sensitivity-and global optimization-based Latin Hypercube Sampling. Eng. Struct. (2019) 179: 139-160.

[11] Brincker, R., Zhang, L.M. and Andersen, P. Modal identification of output-only systems using frequency domain decomposition. Smart Mater. Struct. (2001) 10(3): 441-445.

[12] Douglas, B.M., Reid, W.H. Dynamic tests and system identification of bridges. ASCE J. Struct. Eng. (1982) 108(10): 2295-312.

Back to Top

Document information

Published on 30/11/21
Submitted on 30/11/21

Volume Interdisciplinary projects and case studies, 2021
DOI: 10.23967/sahc.2021.280
Licence: CC BY-NC-SA license

Document Score


Views 13
Recommendations 0

Share this document

claim authorship

Are you one of the authors of this document?