A massive, $50 billion, underground suburban rail network will be built, linking every major rail line in Melbourne and the new airport rail, the Victorian government has pledged.
Billed as "the biggest public transport project in Australian history", the Suburban Rail Loop is expected to take almost 30 years to build and connect key train lines from Frankston to Werribee.
When completed commuters would not need to travel into the city and back out to reach another part of Melbourne – a major downfall in the city's existing train network.
The 90 kilometres of track would connect 10 train lines and the entire project is expected to take until 2050 to complete.
The line would be fully underground from Cheltenham to Melbourne Airport, and partially underground between the Airport and Werribee.