Following completion of the first phase – which included the installation of diaphragm walls and internal slabs, as well as archaeological excavations – the second will focus on completing the station box and related works.
The project, managed by the Metro C consortium led by Webuild and Vianini Lavori on behalf of Roma Metropolitane, is said to be among the most complex and strategic undertakings in the historic heart of the Italian capital.
The first phase began in June 2023 with the relocation of utilities and measures to protect artistic and historic sites. It included the construction of 124 diaphragm walls (91 permanent and 33 cross walls) up to 85m deep and 1.5m thick, in addition to 18 additional walls constructed for the fire shaft on Via dei Fori Imperiali. Some 35,000m3 was excavated, followed by the pouring of 35,000m3 of concrete and the use of 4,700 tons of steel.
To protect historic monuments, more than 1,500 monitoring instruments were installed on churches and historic buildings, including the Basilica Ulpia, Trajan’s Forum, and Palazzo Bonaparte. Archaeological excavations, launched in May this year under the supervision of the special superintendency of Rome, uncovered Roman and medieval structures, including traces of the ancient Via Flaminia and residential complexes linked to multi-storey residential buildings.
The latest phase will involve soil consolidation, completion of the station box with additional diaphragm walls, and a new archaeological excavation up to 4-5m below ground level. In parallel, a shaft will also be dug on Via dei Fori Imperiali.
For Line C, Webuild has built the new archaeo-stations Porta Metronia and Colosseo/Fori Imperiali, scheduled to open to the public in December. Once completed, the entire Line C will stretch for 29km with 31 stations (including the future T1 section currently in the design phase).
In addition to Venezia Station, the Metro C consortium is also working on Section T2, approximately 4km long, connecting Venezia and Clodio/Mazzini stations and passing under the Tiber River. This section will have four stations: Chiesa Nuova, San Pietro, Ottaviano (with an interchange to Line A) and Clodio/Mazzini. Chiesa Nuova and San Pietro will be archaeo-stations.
