It's claimed plans to build a motorway between Limerick and Cork will hurt the regions and isn't the right approach.
The project will be included in the National Planning Framework - due to be unveiled by the Taoiseach on Friday.
Edgar Morgenroth is a Professor of Economics at Dublin City University.
He says money should be spent in Cork and Limerick - rather than a motorway connecting the two.
He also says "what we're going to get is what we've got from a a lot of our other road development - it's simply that people end up having to commute in - there's actually not any new economic activity along the motorway"
