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.
Metro Tunnel
In October 2015 the government announced it had abandoned earlier plans to run the tunnel just metres beneath Swanston Street and above the existing City Loop tunnels and instead place parts of the project 40 metres underground between CBD North and CBD South stations. The decision was made to reduce disruption to trams and traders on Swanston Street and avoid removing critical utilities, such as telecommunication lines, from beneath the street. The cost of such a change was disputed, with the government claiming the additional tunnelling expense would be met by the savings of services remaining in place, but opposition parties arguing the change could be up to $1 billion more expensive.