query: When did construction begin on the Metro Tunnel in Melbourne?
passage: Metro Tunnel
In February 2015, the State government established the Melbourne Metro Rail Authority, with $40 million in funding, to oversee planning of the project and $1.5 billion to commence land and property acquisitions and detailed route investigation, and a further $3 billion in funding was committed. Most of the project would be built as a public-private partnership, with private sector investors funding much of the estimated $9 billion to $11 billion cost upfront.[2] Early enabling works commenced in late 2016. In late 2017, sections of the Melbourne central business district, including City Square and parts of Swanston Street, were closed to enable construction of the tunnel and stations. The project was originally expected to be completed in 2026,[3] but has now been revised to late 2025.[4]
passage: Metro Tunnel
By November, with the state election approaching, the rail tunnel had become a major point of contention in the campaign, with the government apparently prioritising the East West Link (EWL) road tunnel, and the Labor opposition promising that "under no circumstances" would it build the EWL if elected.[34] As an alternative, Labor proposed reinstating the original Metro Tunnel plan, which retained the support of senior public servants in the Department of Transport, Planning and Local Infrastructure. According to this analysis, the original tunnel route performed substantially better than the EWL in a cost-benefits analysis, but no such calculation had been performed for the new Melbourne Rail Link.[35]