Works are set to ramp up on the twin entrances to the Metro Tunnel, including upgrades to the wider rail network.

The Rail Infrastructure Alliance (RIA) works package will see two entrances built at each end of the Metro Tunnel in Kensington and South Yarra, plus a new platform at West Footscray and further rail upgrades to maximise benefits of the Metro Tunnel to all passengers.

A consortium comprising, John Holland, CPB Contractors and AECOM will deliver the RIA, in partnership with Rail Projects Victoria and Metro Trains Melbourne.

Around 50 workers are currently preparing the sites for construction, with more than 150 workers to be onsite by the end of October.

Around 1,000 people will work on the RIA package, including almost 100 apprentices, trainees and engineering cadets. The majority of RIA works are expected to be complete at the same time as tunnels and stations, ready to open by the end of 2025.