The State Opposition has asked Premier Colin Barnett to confirm that the Oakajee port project will go ahead after the continuing fall in iron ore prices.
Shadow treasurer Ben Wyatt said the combination of a high Australian dollar and falling iron ore price cast further doubt on Oakajee.
Treasurer Troy Buswell said earlier this week that State finances were under pressure from the twin threats.
Mr Wyatt today called on Mr Barnett to confirm that the project, 20km north of Geraldton, will actually go ahead.
"What is the future of Oakajee Port?" Mr Wyatt said.
"We have $339 million of taxpayers money sitting in an account for a project that now has no start date, nor any clear future."
Mr Barnett released a statement saying the fall in iron ore prices was not good news for Oakajee but he expected the price to recover fairly quickly.
Mr Barnett said a project like Oakajee, which is intended to serve Mid West miners, had to be looked at in the long-term.