State Highway 1 (New Zealand)

State Highway 1
State Highway 1
Route information
	Maintained by NZ Transport Agency
Length	2,033 km (1,263 mi)
Tourist; routes	Twin Coast Discovery Highway; Thermal Explorer Highway; Classic New Zealand Wine Trail; Alpine Pacific Triangle; Southern Scenic Route;
North Island (SH 1N)
Length	1,081 km (672 mi)
North end	Cape Reinga / Te Rerenga Wairua
Major intersections	SH 2 south near Pōkeno; SH 5 north at Wairakei; SH 5 south (Napier-Taupō Highway) at Taupō; SH 3 north (Bridge Street) at Bulls; SH 3 south (Dundas Street) at Sanson; SH 2 north (Hutt Road) at Ngauranga Interchange;
South end	Wellington International Airport
South Island (SH 1S)
Length	952 km (592 mi)
North end	Picton railway station
Major intersections	SH 6 south (Nelson Street) at Blenheim; SH 7 (Waipara Flat Road) at Waipara; SH 8 south (Racecourse Road) at Washdyke; SH 8 north (Manuka Gorge Highway) at Clarksville; SH 6 north (Dee Street) at Invercargill;
South end	Bluff (Stirling Point)
Location
Country	New Zealand
Primary; destinations	Whangārei; North Shore; Auckland; Manukau; Hamilton; Taupō; Porirua; Wellington; Picton; Blenheim; Christchurch; Ashburton; Timaru; Oamaru; Dunedin; Gore; Invercargill;
Highway system
	New Zealand state highways; Motorways and expressways; List;

State Highway 1 (SH 1) is the longest and most significant road in the New Zealand road network, running the length of both main islands. It appears on road maps as SH 1 and on road signs as a white number 1 on a red shield, but it has the official designations SH 1N in the North Island, SH 1S in the South Island.

SH 1 is 2,006 kilometres (1,246 mi) long, 1,074 km (667 mi) in the North Island and 932 km (579 mi) in the South Island. Since 2010 new roads have reduced the length from 2,033 km (1,263 mi). For the majority of its length it is a two-lane single carriageway, with at-grade intersections and property accesses, in both rural and urban areas. These sections have some passing lanes. Around 315 km (196 mi) of SH 1 is of motorway or expressway standard as of August 2022: 281 km (175 mi) in the North Island and 34 km (21 mi) in the South Island.