The project comprises widening a 7.8 kilometre stretch of the existing Southern Motorway (SH1) between Manukau and Papakura. This will help to address congestion resulting from existing lane imbalances and will assist with the redistribution of traffic when the alternative Auckland motorway, the Western Ring Route, opens in 2017.
To mitigate the time-critical activities of planning approvals and property acquisition, Aurecon identified potentially affected parties early and formed effective working relationships with these key stakeholders. This helped support the accelerated nature of the project delivery.
The safety and capacity improvements were kept within the existing motorway designation where possible to minimise effects on adjacent land owners and on the environment. Permanent land acquisition was limited to three areas.
The project includes provision of a new 4.5 kilometre walking and cycling facility between the Papakura and Takanini Interchanges to support active transport modes, and will enable a coastal edge of the Manukau Harbour to be opened up to the local community. It comprises redevelopment of an existing maintenance yard to create a public space that overlooks the Manukau Harbour.
The work includes: