Concern has been raised over the cost of building the new Gordie Howe International Bridge.
That's according to newly released documents, obtained by the Canadian Press under the Access to Information Act, which shows the federal government ordered a review of the budget for the project after concerns arose that the cost was in danger of exceeding spending targets.
The review was focused on construction costs after the Crown agency overseeing the work heard concerns from the three bidders about meeting the government's budget expectations.
Experts from both within and outside government were consulted early last fall to evaluate the concerns and to find the necessary savings through technical changes.
The cost of building the new crossing between Windsor-Detroit has been estimated at 4.8-billion dollars which includes costs to prepare and purchase properties.
The Liberals are likely to find out in the next few weeks if the savings identified in the "affordability review" will yield the intended results when the three groups vying for the project file their financial bids.
The winning bid is expected to be announced in June.
With files from The Canadian Press