Treasury is warning the country's current infrastructure gap is set to widen if nothing changes. 
It's also stating the Government frequently doesn't get value for money with investments and has one of the worst records at delivering infrastructure.  
Infrastructure Commission Chief Executive Ross Copland told Mike Hosking the gap is large and New Zealand has underinvested compared to its OECD peers.  
He says too often when investments are made, they aren't the right ones - and in some cases in the last couple of years they're seeing productivity of the sector declining. 
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