State Highway 20

Forming the southern section of the Western Ring Route, a new 4.5 kilometre motorway replaces Wiri Station Road as the main link from Manukau city centre to the Southwestern Motorway.

  • Location: Auckland
  • Started: 2006
  • Cost: $210,000,000
  • Completed: 2011
  • Product: CTB, basecourse, drainage aggregates, bulk fill
  • Contractor: Leighton Works

Leighton Works Makes the Connection

The NZTA motorway project has been constructed by Leighton Works, a joint venture between Leighton Contractors and DownerEDIWorks.

Valued at an estimated $210 million, the new motorway link is made up of two lanes in each direction. The design also allows for a third lane to be added to each side in the future, giving six lanes in total. Within this section of motorway, two interchanges at Cavendish Drive and