McConnell Dowell / Tonkin + Taylor Pty Ltd



Services Rendered

  • A team of 10 Field Engineers, providing geotechnical logging and data capture services during the Geotechnical Investigations consisting of 100 boreholes with a total linear meterage of 3600m.
  • Supporting four drill rigs drilling on the River Derwent, two rigs working on either side of the river
  • Atterberg Limits
  • Particle Size Distribution
  • Consolidation
  • Unconsolidated Undrained Triaxial
  • Particle Density
  • Point Load Strength Index
  • Dispersive Tests
  • California Bearing Ratio
  • Compaction
  • Uniaxial Compressive Strength
  • Aggressivity (pH, Conductivity, Sulphates, Chlorides)
  • Direct Shear

New Bridgewater Bridge, Tasmania

The New Bridgewater Bridge is a major transport infrastructure project in Tasmania. It will replace the existing lift-span bridge built in the 1940s with a new one-kilometre long bridge with four lanes. The new bridge will cut travel times for the 22,000 people that use the route each day.

The project includes the construction of a new bridge, two enhanced major interchanges, and a shared pathway for cyclists and pedestrians.

Chadwick Geotechnics provided our clients with a comprehensive geotechnical investigation that included field and laboratory testing. The investigation was designed to provide information about the subsurface conditions at the site, which will be used to design the foundations for the New Bridgewater Bridge.