The South Australian government is set to call for tenders for the project management of its GlobeLink Master Plan, which includes a new freight-only airport, east of Adelaide.
The plan was included in Premier Steven Marshall's election promises and will also provide for new road and rail freight corridors looping around the city.
"GlobeLink is one of the Liberal government's bold visions to transform South Australia's economy, grow our exports and create more jobs," Transport and Infrastructure Minister Stephan Knoll said on Friday.
The government has not released an estimated cost for the project but said it would be paid for through a combination of state and federal government and private equity funds.
The concept drew criticism when it was first proposed, including calls from the SA Freight Council for the idea to be abandoned.
But Mr Knoll said GlobeLink would make SA's road and rail freight more efficient and give local businesses better access to export markets.
The government also promised to engage with key stakeholders, including freight industry bodies, in a "thorough and robust" consultation process.