The project involves a four-track expansion of the line between Milan Rogoredo and Pavia through the construction of a new pair of tracks alongside the existing ones, covering a total length of approximately 29 km. There are also plans to convert the service locations along the line into stops, with the exception of the Pieve Emanuele facility, which will be converted into a station.

The project is divided into two phases: the first phase involves expanding the line to four tracks along the Milan Rogoredo–Pieve Emanuele section (approximately 11 km), whilst the second phase involves extending the line to Pavia (approximately 18 km).

The project will increase capacity and enable the separation of different types of traffic, thereby specialising the two lines. At the same time, plans are in place to introduce a new suburban service to and from Pieve Emanuele.

The Milan Rogoredo – Pavia project has received partial public funding, including through NRRP funds.

With effect from 12 March 2026, the date on which Decree-Law No. 36 (published in the Official Gazette No. 58 of 11 March 2026) came into force, in accordance with Article 5 of that decree, the Chief Executive Officer of RFI SpA has taken over from the previously appointed Extraordinary Commissioners.