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State Highway 18 (New Zealand)
Road in New Zealand / From Wikipedia, the free encyclopedia
State Highway 18 (SH 18), also known as the Upper Harbour Motorway, is a state highway that runs between the Auckland Northern Motorway (SH 1) on the North Shore and the Northwestern Motorway (SH 16) in West Auckland, New Zealand. SH 18 forms the northern part of the Western Ring Route, which continues from Waitakere south-east to Manukau.
Quick Facts Route information, Length ...
State Highway 18 | ||||
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Route information | ||||
Maintained by NZ Transport Agency | ||||
Length | 14 km (8.7 mi) | |||
Major junctions | ||||
North-east end | ![]() | |||
South-west end | ![]() | |||
Location | ||||
Country | New Zealand | |||
Primary destinations | Greenhithe, Hobsonville | |||
Highway system | ||||
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![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Upper_Harbour_Motorway_at_Trig_Road_Interchange.jpg/640px-Upper_Harbour_Motorway_at_Trig_Road_Interchange.jpg)