Northern Gateway Alliance

Auckland, New Zealand

SH1 Northern Gateway Alliance

  • Client
    NZ Transport Agency
  • Contractor
    Northern Gateway Alliance
  • Duration
    4 years

The Northern Gateway Project extended the existing State Highway 1 north by 7.5km between Orewa and Puhoi. The section, also known as ALPURT B2, is a toll road through ecologically significant and environmentally sensitive areas. The project required a number of major bridges, tunnels, deep cuts and extensive fills.

Geotechnics assisted with the establishment of laboratory facilities, the provision of testing equipment as well as instrumentation. We provided a laboratory manager who developed a management system and gained IANZ accreditation status. We also trained Northern Gateway Alliance laboratory staff in construction testing. Our Auckland based team provided Benkelman Beam and in-situ CBR testing and profilometer monitoring services during construction.

Northern Gateway Alliance 2