Western Ring Route | |
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Upper Harbour Motorway (SH 18) Northwestern Motorway Southwestern Motorway (SH 20) |
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Route information | |
Maintained by NZ Transport Agency | |
Length: | 48 km (30 mi) |
History: | First section completed – 1955 |
Major junctions | |
North end: | SH 1 near Rosedale |
SH 16 at Westgate SH 16 at Waterview SH 20A at Mangere SH 20B at Puhinui |
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South end: | SH 20 at Manukau |
Location | |
Major cities: | Greenhithe, Hobsonville, Massey, Te Atatu, Waterview, Mount Roskill, Onehunga, Mangere, Auckland Airport, Wiri |
Highway system | |
The Western Ring Route is a motorway system being constructed in Auckland, New Zealand. It runs along three existing state highways: the Southwestern Motorway (SH20), the Northwestern Motorway (part of SH16) and the Upper Harbour Highway (SH18). When finished it will surpass the Southern Motorway to become the longest motorway in New Zealand at 48 kilometers in length. It will run through Manukau, Waitakere, and the North Shore, bypassing the Auckland city centre and thus providing a second motorway route through the Auckland isthmus.