VicRoads has published long-term plans to widen Punt Road into a six-lane highway through South Yarra and Prahran, in what would be a departure from strong hints Labor gave before last year's election that it would ditch any future plan to widen the choked city bypass.

In a planning policy document released before last year's election, Labor flagged plans to do away with a "50-year-old easement hovering over 140 properties on Punt Road, from Union Street to Alexandra Avenue, [that] gives locals no control over the fate of their own homes".

It stopped short of promising to remove the 2½-kilometre overlay, instead pledging a review to determine if it should be kept.

On Monday, VicRoads produced a detailed report for Roads Minister Luke Donnellan​ suggesting scores of properties on the eastern side of Punt Road could one day be demolished to make way for the road's expansion from four to six lanes.