The federal government's independent assessment body for major projects has given approval for the next phase of a project to deliver high-speed rail linking Sydney with Newcastle via the Central Coast.

Infrastructure Australia evaluates project proposals of national significance or where government funding of more than $250 million is required.

It has given support to the development phase of the project — a two-year period to engage with contractors and confirm at least 40 per cent of the design.

High Speed Rail Authority chief executive Tim Parker said while a final green light for the project is up to the government, he does not expect any major hurdles.

"I think the government has already shown their commitment," he said.

" They've set us up, they've given us funding ... I don't

See Full Page