Transport infrastructure is essential for enabling economic activity growth through connecting people, businesses and economies. Since 2009, the New Zealand Government has been committed to investments in seven Roads of National Significance across the North and South Islands. These were identified as essential routes that require significant development to reduce congestion, unlock economic growth and productivity for New Zealand, and improve transport safety.

Transport infrastructure is essential for enabling economic activity growth through connecting people, businesses and economies. The Northern Infrastructure Forum, a transport forum led by Auckland Business Chamber, commissioned NZIER to estimate the economic impact of potential state highway investments in the North Island.