A huge number of road projects underway will not be enough to reduce road congestion, with Australia’s infrastructure advisory body warning the cost on the economy will double.

Infrastructure Australia released an audit which revealed congestion in major cities is rising despite a significant number of transport projects.

It found congestion costs the economy about $20 billion a year but could reach nearly $39 billion by 2031 if the government doesn’t act.

Infrastructure Australia’s Executive Director of Policy and Research Peter Colacino tells Steve Price the government needs to do more.

“Maintenance is not keeping pace with growth, let alone investment in new assets.

“We need to make sure that as the form of our cities changes… we as government in the community invest in infrastructure that people need to maintain their quality of life and national productivity.”

Click PLAY to hear the full interview