ABSTRACT
This chapter aims to define the structural conditions of the bridge, control its degradation state and define possible actions to be implemented. Starting from historical research and geometrical survey, it was possible to investigate the past interventions and define a detailed damage pattern. Historic structures are particularly vulnerable to dynamic loadings both natural and anthropogenic. A dynamic monitoring system was installed in order to control the vibration level transmitted by the traffic on the masonry structures of the roman bridge. Empirical evidences indicate that ordinary traffic on regular road surfaces cannot be the principal cause of damage. The chapter presents some preliminary inspections, including damage survey, radar and thermographic tests in addition to the installation of a temporary dynamic monitoring system on the bridge to control its structural health state and assesses traffic-induced vibrations. Damage survey was based on visual inspections and analysis of data obtained from archaeological excavations.
