Johnsonville–Porirua Motorway

Johnsonville–Porirua Motorway
State Highway 1
Route information
Maintained by New Zealand Transport Agency
Length:	11 km (7 mi)
Existed:	23 December 1950 – present
Major junctions
North end:	Porirua
South end:	Johnsonville
Location
Primary destinations:	Tawa, Churton Park, Grenada North
Highway system
New Zealand state highways Motorways and expressways List Unused

The Johnsonville–Porirua Motorway is a motorway in Wellington, New Zealand. It forms part of State Highway 1, the main route of traffic in and out of the city.

The motorway runs from Johnsonville, in the north of Wellington City proper, to Porirua. It is approximately 11 kilometres long, and mostly flat. At its southern end, it is connected to the Wellington Urban Motorway through Ngauranga Gorge — this connection is not considered motorway, meeting most but not all of the criteria. When the Transmission Gully Motorway is built, it would connect to the Johnsonville–Porirua Motorway near its northern end.

The first section of the motorway, running for three miles (5 km) from Johnsonville to Takapau Road at the southern edge of Tawa, was opened on Saturday 23 December 1950 .^[1]^[2] It bypassed a winding two-lane road now called Middleton Road, through Glenside. It was New Zealand's first motorway,^[3] with much of the section between Johnsonville and Tawa using the former alignment of the North Island Main Trunk railway built in the 1880s by the Wellington and Manawatu Railway Company and bypassed by the Tawa Flat deviation built in the 1930s.

Exit list

Territorial authority	Location	Destinations	Notes
Terminates onto State Highway 1 at Mungavin Ave - Titahi Bay Road interchange
Porirua City	Porirua CBD	Porirua City Centre, Eastern Porirua, Titahi Bay, Kenepuru
Wellington City	Redwood	Tawa, Grenada North
	Glenside	Churton Park
	North of Johnsonville	Johnsonville, Khandallah	southbound exit only
	South of Johnsonville	Johnsonville, Khandallah	northbound exit only
	Top of Ngauranga Gorge	Newlands, Woodridge, Grenada Village
Terminates onto Centennial Highway at the top of the Ngauranga Gorge

References

↑ AJHR D1, 1951 page 29
↑ Dominion 27 December 1950 page 11; Evening Post 21 December 1950 page 6, 27 December 1950 page 10 (photos)
↑ Transit New Zealand - FAQ

List of motorways and expressways in New Zealand

Auckland	Northern Motorway Northwestern Motorway Southern Motorway Southwestern Motorway Upper Harbour Motorway

Wellington	Johnsonville–Porirua Motorway Wellington Urban Motorway Hutt Expressway

Rest of North Island	Waikato Expressway Takitimu Drive Tauranga Eastern Link Hawke's Bay Expressway

South Island	Christchurch Northern Motorway Christchurch Southern Motorway Christchurch-Lyttelton Motorway Dunedin Southern Motorway

Past motorways/expressways	New Plymouth Southern Motorway Wanganui Metropolitan Motorway Dunedin Northern Motorway

Future motorways/expressways	Puhoi to Wellsford Motorway Penlink Second Harbour Crossing Waterview Connection Transmission Gully Motorway Kapiti Expressway Western Belfast Bypass

Major infrastructure	Upper Harbour Bridge Northern Busway, Auckland Auckland Harbour Bridge Victoria Park Tunnel and Viaduct Central Motorway Junction Newmarket Viaduct Mangere Bridge Tauranga Harbour Bridge Ngauranga Interchange Terrace Motorway Tunnel Lyttelton Road Tunnel

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Johnsonville–Porirua Motorway

Exit list

See also

References