Waterview inside tunnel

Auckland, New Zealand

SH20 Waterview Connection

  • Client
    NZTA
  • Contractor
    Well-Connected Alliance
  • Duration
    36 Months

 The Waterview Connection project in Auckland is New Zealand’s largest roading project. Connecting the Southwestern and Northwestern Motorways and completing a ring route around the city. The 5km of motorway includes 2.4km of TBM bored twin tunnels up to 40m below ground. Each tunnel will carry three lanes of traffic. 

Our role involves supply, installation and monitoring all geotechnical and structural instrumentation

Including vibrating wire piezometers, hydrostatic profile gauges, inclinometers, strain gauges, rod extensometers and load cells. Also included Cross-hole Sonic logging of piles for the Great North Road Interchange and earthworks testing of all the over-burden material, tunnel backfill and bridge abutment fill.

 

 

 

Waterview inside tunnel