Metro Tunnel
The Metro Tunnel (sometimes also known as the Melbourne Metro Rail Project or the Metro Rail Capacity Project) is a metropolitan rail infrastructure project currently under construction in Melbourne, Australia. It includes the construction of twin 9-kilometre rail tunnels between South Kensington station (north west of the Melbourne City Centre) and South Yarra (in the south east) with five new underground stations. The southern portal for the tunnel is to be located to the south of South Yarra station. As a result, the tunnel will connect the Pakenham and Cranbourne lines with the Sunbury line, and allow these lines to bypass Flinders Street station and the City Loop while still stopping in the Melbourne central business district.
Melbourne Metro 2
After the Andrews government announced an expanded West Gate Tunnel project in 2017, in an attempt to improve transport links from the western suburbs, public transport advocates cited MM2 as a more sustainable alternative to the massive road tunnel. The MM2 project again received attention in December of that year, when the University of Melbourne announced plans to build a new campus for its Melbourne School of Engineering at Fishermans Bend. Although the state government suggested an extension of the tram network could be built to serve the facility, treasurer Tim Pallas admitted that a heavy rail line through the area was unlikely to proceed in the near future. At the same time, however, he mentioned that a "Metro 3" project was also possible, but did not provide any detail on the plan.