High-speed rail from Sydney to Newcastle is a step closer. But what about Sydney to Melbourne?

An artist's impression of a high-speed train operating between Sydney and Newcastle. High Speed Rail Authority

The federal government will spend A$230 million towards a high-speed rail line between Newcastle and Sydney, promising the project will be “shovel ready” for a final decision on construction in 2028.

The government also released a partly redacted business case for the project, showing the first two stages from Newcastle to Sydney by 2039 are now estimated to cost $61.2 billion, including new trains. A further $32 billion would be needed to extend it to Western Sydney’s international airport by 2042.