Auckland, New Zealand
SH1 Puhoi to Warkworth Motorway Project
ClientNZ Transport Agency (NZTA)
The Ara Tūhono Pūhoi to Warkworth project will extend the four-lane Northern Motorway (SH1) 18.5km from the Johnstone's Hill Tunnels to just north of Warkworth. The meaning of Ara Tūhono is a connecting pathway. Ara meaning pathway/passage and Tūhono connecting or linking one part to another. The new motorway will be built to the west of the existing SH1 and bypass Warkworth on the western side. It will be a four-lane dual carriageway, separated by a central median with a safety barrier.
The Pūhoi to Warkworth project is a PPP (Private Public Partnership) between the Government and a private consortium, the Northern Express Group (NX2). It will be open for traffic by late 2021.
Geotechnics' have set up an on-site IANZ-accredited laboratory and offer lab and field testing services, as well as the supply, installation and monitoring of all geotechnical and structural instrumentation (including vibrating wire piezometers, profilometers, inclinometers and extensometers).