In great ancient infrastructure, an evolutionary line can be traced from ancient restoration, through functional maintenance processes, to modern archaeological restoration. Any interventions undertaken can be clearly deduced by reading the traces left on the monument and, at times, also from any damage incurred through the reuse of materials; for the most part, however, they are mainly of a structural nature. This contribution focuses on the conditions of a construction extending almost 15 kilometres (considering only the emerging part, that closest to Rome) which are certainly critical and finding the necessary economic resources (generally unavailable) proves to be problematic,as does the logistic side of the maintenance itself. However, various interventions have been undertaken over the last decades, even if they cannot be considered sufficient or decisive. In particular, we will look at some measures that were directly put in place under the author’s supervision in collaboration with officials of the Superintendence; an activity fuelled by that technical and cultural passion that unites those who dedicate themselves to preserving and conserving these assets, but which often remain unrecognised.
