Achieving good long-term environmental outcomes was a big part of the Transmission Gully project, a 27km long, four lane stretch of motorway north of Wellington, and Kauri Park’s planting of 2.5 million plants played a significant role in the results.

Ara Tūhono means a connecting pathway - perfect for this much vaunted stretch of motorway that extends the Northern Motorway from the Johnstones Hill Tunnels to Warkworth, contributing to the economic growth of the Northland region.

The Auckland Northern Motorway has been a multi-year marathon for NZTA. Carving a major state highway through geologically complicated terrain was certainly a complex task for the many engineers and designers involved.