Rail Infrastructure Alliance – Metro Tunnel Project

The Rail Infrastructure Alliance (RIA) is a partnership between John Holland, CPB Contractors, AECOM, and Rail Projects Victoria, formed to deliver major works for Melbourne’s Metro Tunnel Project. RIA’s scope includes connecting the new tunnels to the existing rail network through the construction of new track, power, and signalling infrastructure, along with station and systems upgrades to support High Capacity Metro Trains.

Now in its final stages, the RIA has completed most major construction works and is focused on testing, commissioning, and systems integration ahead of the Metro Tunnel’s opening in December 2025. Full passenger services are scheduled to commence in February 2026, delivering expanded capacity, improved reliability, and more frequent train services—paving the way for a modern, connected transport network across Melbourne.

Aerial image of the works at Kensington at the Western Portal of the Metro Tunnel

Aerial image of works for the third new platform at West Footscray Station

View of construction of the roof structure of the Eastern Portal at South Yarra

Engaging with the School

To assist in achieving a sustainable outcome Rail Infrastructure Alliance has partnered with the Supply Chain Sustainability School to provide free sustainability learning resources for staff, contractors and suppliers.

Please undertake the following steps:

Make sure you are registered with the School– registration is fast, free and simple. You can do that here if you haven’t already. Then come back to this page!
Complete a Self Assessment– understand your sustainability knowledge level and get your FREE sustainability learning Action Plan – log into your Company Dashboard and follow the links to complete your Sustainability assessment. Learn more here.
Complete the following e-learning modules: