The West Australian Government has approved the 570km rail corridor which will open up the Mid West iron ore region.
The rail line will allow miners access to the $5.9 billion proposed deepwater port at Oakajee.
WA premier Colin Barnett and transport minister Troy Buswell said the approval is a significant step in securing new infrastructure for the Mid West region.
"This approval enables OPR to proceed with detailed planning and design for a railway to bring ore from deposits from the region’s north and east to Oakajee," Barnett said.
"Planning the corridor has included consultation with potential users, local governments, affected landholders and other stakeholders such as farmers and pastoralists, Native Title claimants and mining leaseholders."
Buswell added that the rail line will be a standard heavy gauge, similar to rail operating in the Pilbara.
"The corridor consists of nine sections varying in width to provide flexibility in dealing with geographical features, heritage sites, environmental issues, areas of mineral prospectively and landowner requirements,” he said.
However while the approval for the rail corridor will enable further development of the Oakajee proposal, specific legislation would have to be enacted before it could actually be built.
The rail line would run east from the proposed Oakajee port through Morseby Range to a junction north west of Mullewa, after which it heads north east past the Tallering Peak project to Weld Range, and then north to Jack Hills.