The federal government says a proposed high speed rail link between Sydney and Newcastle could be ready to start building within two years after committing a further $229.6 million to detailed planning work.
Infrastructure Minister Catherine King said the money would pay for a two year development phase led by the High Speed Rail Authority.
It is aimed at locking in the design, approvals, scope and cost of the new line. The latest funding takes the Commonwealth’s total investment in the development phase to $659.6 million before any construction begins.
Under the plan, the new service would cut travel time between Sydney and Newcastle to about an hour with trips from Sydney to the Central Coast taking around 30 minutes.
The government says the project would change travel in the state’s busiest corridor, where current train trips can take more than two and a half hours.
Work on the business case began in 2024 and has included early technical studies such as geotechnical investigations under Brisbane Water to help assess tunnel options. The full business case is due to be released on Tuesday, February 24.
While the government is promoting the speed of planning, it has not set a construction start date or confirmed how the build would be funded.
Officials say the development phase will also test options that include a mix of public and private financing before a future investment decision.
Infrastructure Australia has previously assessed the proposal and supported targeted planning to reduce major unknowns.
It noted cost estimates are still based on an early design stage and could change as the details are worked out. The agency also warned some benefits including housing impacts, are hard to measure at this point.
The announcement has restarted a long running debate over whether Australia can afford bullet train style projects.
Grattan Institute transport program head Marion Terrill has argued that a true high speed line is unlikely to add up for Australia and that smaller upgrades may deliver better value.
Supporters say the latest step is the clearest progress in decades. Joe Langley, an urban planner and member of the High Speed Rail Association said the new funding took the project beyond earlier attempts by adding that “We’ve had 12 or 13 failed attempts to get it to this point.”