Site investigations prepared in accordance with Technical Standards for Construction D.M. 17 January 2018 and Circular 21 January 2019, n. 7 C.S.LL.PP.
The geometric characteristics of the bridge, in the absence of the original project documentation, were detected in situ.
During the inspection on 12 April 2021, the correspondence between the relief and the work of art was verified.
On May 31, 2021, the investigations on the materials were made.