The motorway will replace Wiri Station Road as the main link from Manukau city centre to the Southwestern Motorway. The 4.5 kilometre motorway will form the southern section of the Western Ring Route, along with the SH20 Manukau Harbour Crossing project. Construction began in June 2006 and is almost completed, with the motorway scheduled to be opened progressively from August through to December 2010.

To complete the project:

• Over 55,000 tonnes of asphalt will be placed
• 61 super T beams will be installed
• Two bridges are to be completed
• Fences will be erected along the motorway boundaries
• 1.8 kilometres of drainage will be installed
• Extensive service relocations will continue