Calderwood Valley – Stage 1A to D

Client
Lendlease Communities
Value
$25.7 Million
Period
2017
Location
Calderwood, NSW
Expertise
Bulk Earthworks, Residential Subdivisions
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Key Features

275 lot residential subdivision with allowances for commercial lots inclusive of earthworks, stormwater drainage installation, road construction and services reticulation surrounding the Macquarie Rivulet.

  • 485,500 cu.m of earthworks
    • 90,500 cu.m topsoil
    • 133,000 cu.m cut to fill onsite
    • 262,000 cu.m imported fill
  • Over 5,000 lin.m of stormwater drainage including 600m of twin cell box culverts
  • Over 20,000 sq.m of pavement to construct in various thicknesses
  • Over 4,000 sq.m of footpaths
  • Construction of a 144 lineal metre long bridge over the Macquarie Rivulet
  • Management of environmental impacts to the Macquarie Rivulet during construction of the subdivision and bridge
  • Management of strict deadlines, delays in plan approvals, and extensive changes to design during construction
  • 100,000 cu.m of imported fill in addition to 90,000 cubic metres of cut to fill onsite
  • Construction of turning lane on existing Illawarra Highway to RMS specification
  • Construction of access road off Illawarra Highway to RMS Specification
  • Construction of 800m of large drainage channel, including concrete dish drain

Challenge

Calderwood Valley is home to the Macquarie Rivulet which is 23 km in length and runs through the Illawarra escarpment.

Constructing the subdivision and open space works inclusive of inclusive of earthworks, stormwater drainage installation, road construction and services reticulation required rigorous and extensive environmental management controls to ensure we did not disturb this area.

Due to detailed planning and onsite management there was no impact made to this local waterway, ensuring that it remains exactly as it was for the community to enjoy for many years to come.