Metro C Consortium, led by Webuild and Vianini Lavori, has signed a contract worth approximately €2bn for the construction of the T2 section of Rome’s Metro Line C.

Commissioned by the city’s metro authority, Roma Metropolitane on behalf of Roma Capitale, the contract involves one of the most complex engineering challenges in the city as the new stretch of the line will pass under the Tiber River in an area of exceptional archaeological and urban importance.

Construction works will start in January 2026 following approval of executive design.

The T2 section will extend for 4km between the Venezia Station and Clodio/Mazzini, adding four new stations: Chiesa Nuova, San Pietro, Ottaviano (interconnected with Line A), and Clodio/Mazzini. Chiesa Nuova and San Pietro will be archaeological stations, designed to celebrate the city’s heritage and integrate it with the urban setting.

San Pietro Station, set within the gardens of Castel Sant’Angelo, will be the deepest and most visually striking, descending 48m underground. Its design will complement the new layout of the surrounding square while respecting the adjacent monumental structures.

Chiesa Nuova Station will be located beneath the square of the same name, near the Church of Santa Maria in Vallicella and the Oratorio dei Filippini.

One of the most technically challenging aspects of the project includes constructing diaphragms up to approximately 90m deep. It will involve using cutting-edge technology already successfully tested during the construction of the Venezia Station. The line will also pass 25m below the Tiber.

Webuild is in the final testing phase of the San Giovanni–Colosseo/Fori Imperiali section of Line C, with the archaeological stations Porta Metronia and Colosseo/Fori Imperiali scheduled for delivery in September. Once completed, Line C will be 26km long and include 29 stations, 22 of which are already operational. It will link the south-eastern suburbs of Rome to the north-west.