By taking our busiest train lines through a new tunnel under the city, the Metro Tunnel will free up space in the City Loop to run more trains to and from of the suburbs.
That means more trains, more often across Victoria, with a less crowded and more reliable train network.
The Metro Tunnel will create a new end-to-end rail line from Sunbury in the west to Cranbourne/Pakenham in the south-east, with high capacity trains and five new underground stations.
As a result, capacity will be created on the network to enable 39,000 more passengers to use the rail system during each peak period.
Rail Projects Victoria (formally Melbourne Metro Rail Authority) is the Victorian Government body responsible for the delivery of the Metro Tunnel.