Improved safety, more consistent travel times, better freight connections and a more robust and reliable road between Auckland and the Northland region will result from the Pūhoi to Warkworth road project.
The project will extend the 4-lane Northern Motorway (SH1) 18.5km from the Johnstone's Hill Tunnels to just north of Warkworth.
It is the first stage of the Ara Tūhono – Pūhoi to Wellsford Road of National Significance.
It will be a 4-lane dual carriageway, separated by a central median with a safety barrier, designed to avoid the fatal collisions of recent years.
The new motorway necessitates large earthworks that will move earth the equivalent of 4,800 Olympic-sized swimming pools.
During the first phase the aim is to complete 20% of the following:
- 7 million m3 of cuts
- 5 million m3 of fill
- 1.5 million m3 of rock excavated
The project has a 54,000kg rock crusher affectionately known as 'Terex'. Having this machine onsite reduces the delivery of rock from other sources by up to 21,000 truck and trailer units over the next four years.
The project is a public-private partnership (PPP) aimed at allowing large projects to benefit from private sector innovation and funding.