Mercer to Longswamp

Project Progress

Client: NZTA
Location: Mercer, Waikato

The project involved construction of 4 major bridges, various cuttings and embankments, an interchange and 10km of expressway. These were all completed in and adjacent to a live traffic environment. MacDow was involved in the construction of bridge structures and Ross Reid carried out the balance of the civil works. The project works were programmed in such a way that the works were carried out without a winter shut down.


Project Scope

  • Earthworks involved 910,000m3 cut-to-fill and 30,000m3 of topsoiling.
  • Pavement – Significant pavement works were programmed to commence in the winter period; 180,000m2 of pavement works with two-coat sealing to meet or exceed TNZ B/2 specification, and 400,000m2 of stabilising work up to 400mm deep.