After the cutting of the existing tunnel vault was completed, it is started the assembly of the bridging structure. The first step was the launch of two longitudinal beams that represent the load-bearing framework of the structure, the launch took place during the nights between April 22nd and 23rd. Subsequently, the prefabricated structures (predalles) will be launched, and the bottom slab will be completed. Saranno quindi posizionate le controventatura in acciaio, varate le predalles superiori e gettato il solaio di copertura dello scatolare. Solo dopo verranno demolite le parti di galleria esistente per creare gli accessi alla banchina della stazione Colosseo. L’attraversamento verrà quindi completato con la posa di pareti vetrate laterali e finiture interne.
