State Highway 8 (New Zealand)

State Highway 8
State Highway 8
Route information
	Maintained by NZ Transport Agency
Length	457 km (284 mi)
Major junctions
CW end	SH 1 at Washdyke
ACW end	SH 1 at Clarksville
Location
Country	New Zealand
Primary; destinations	Pleasant Point, Fairlie, Lake Tekapo, Twizel, Omarama, Cromwell, Clyde, Alexandra, Roxburgh, Lawrence
Highway system
	New Zealand state highways; Motorways and expressways; List;

State Highway 8 is one of New Zealand's eight national highways. It forms an anticlockwise loop through the southern scenic regions of the Mackenzie Basin and Central Otago, starting and terminating in junctions with State Highway 1. Distances are measured from north to south.

For most of its length SH8 is a two-lane single carriageway, with at-grade intersections and property accesses directly off the road, both in rural and urban areas.

Route

NZSH 8 runs through rugged terrain, such as the rocky hill country south of Alexandra.

Main route

The highway leaves SH1 at Washdyke, an industrial suburb of Timaru, travelling initially northwest towards the town of Fairlie. From here the route tends westward and rapidly increases in altitude, passing the southern end of the two great Mackenzie Basin lakes of Tekapo and Pukaki.

From Pukaki the highway turns southwest across the upper reaches of the Waitaki Valley, passing through the former hydroelectricity service town of Twizel and Omarama before again climbing to cross the Lindis Pass, which, at 971 metres, is the highest point on the highway's path. The highway winds along the valley of the Lindis River, reaching the upper Clutha River not far from Tarras.

From here, the highway runs close to the eastern shore of the man-made Lake Dunstan before passing the historic town of Cromwell. The highway turns south as it travels through the Cromwell Gorge passing the country's largest hydroelectric dam, the Clyde Dam at Clyde. The highway continues along the Clutha Valley through the town of Alexandra and past Lake Roxburgh to the town of Roxburgh. Much of this part of the highway's journey is past fruit orchards, and historic gold-diggings from the Central Otago Gold Rush.

From Roxburgh, the highway turns southeastward, passing Ettrick, Raes Junction and Beaumont, where it turns away from the Clutha, before reaching Lawrence, close to the original strike in the Central Otago Gold Rush. From here, the highway continues past Waitahuna and the twisting Manuka Gorge, reaching the plain of the Tokomairiro River at Clarksville, three kilometres south of Milton.

Highway spurs

State Highway 8 has two spurs: State Highway 8A and State Highway 8B. These two spurs connect the highway with State Highway 6, which lies on the western bank of Lake Dunstan. State Highway 8A runs for 23 km from SH6 at Luggate to connect with SH8 close to Tarras. State Highway 8B runs for just 2.6 km from SH8 at Deadmans Point across the lake to the town of Cromwell.

Route changes

The course of SH8 between Clyde and Tarras was substantially altered during the 1980s as part of the construction of the Clyde Dam, which flooded much of the Cromwell Gorge, including the former route of the highway. A completely new section was built between Clyde and Cromwell; for SH8B the old single-lane bridge crossing the Clutha was replaced with a new two-lane bridge approximately 1.5 km to the north.

Statistics

In 2006, SH8 had an annual average daily traffic volume (AADT - daily estimate) of between 1,188 vehicles at Bendigo, and 4,897 vehicles on the Clyde side of Alexandra. Over the eleven sites measured, between 9.0% and 15.3% of the vehicles were classified as heavy (3.5 tonnes or greater). For the spurs, SH8A AADT ranged from 646 to 858 vehicles, while the volume of vehicles on SH8B was 3,930 on Deadmans Point Bridge, and 4,500 near the SH6 junction.^[1]

Major intersections

Territorial authority	Location	km	Destinations	Notes
Timaru District	Washdyke	0	SH 1 north – Temuka, Christchurch SH 1 south – Timaru, Dunedin	SH 8 begins
Mackenzie District	Fairlie	57	SH 79 – Geraldine, Christchurch	Alternative route to Christchurch, bypassing Timaru
		83	Burkes Pass 706 m (2,316 ft)
	Lake Pukaki	146	SH 80 – Glentanner, Aoraki/Mt Cook
	Twizel	159	Ruataniwha Dam (Ohau River dammed forming Lake Ruataniwha)
Waitaki District	Twizel	159
	Omarama	185	SH 83 – Kurow, Oamaru
		219	Lindis Pass 972 m (3,189 ft)
Central Otago District		219	Lindis Pass 972 m (3,189 ft)
	Tarras	267	SH 8A – Wanaka, West Coast
	Cromwell	294	SH 8B – Cromwell, Queenstown
	Alexandra	328	SH 85 – Ranfurly, Dunedin
	Alexandra	328	Clutha River
	Raes Junction	397	SH 90 – Tapanui, Gore	Intersection lies on the border between the two districts
Clutha District	Raes Junction	397	SH 90 – Tapanui, Gore	Intersection lies on the border between the two districts
	Beaumont	407	Beaumont Bridge (Clutha River)
	Clarksville	460	SH 1 north – Milton, Dunedin SH 1 south – Balclutha, Invercargill	SH 8 ends

References

^ "Traffic Data Booklet 2002 - 2006" (PDF). Transit New Zealand. May 2007. Archived from the original (PDF) on 11 April 2008. Retrieved 9 December 2007.

[1] "Traffic Data Booklet 2002 - 2006" (PDF). Transit New Zealand. May 2007. Archived from the original (PDF) on 11 April 2008. Retrieved 9 December 2007.

[1]

v t e New Zealand state highways
List of New Zealand state highways List of motorways and expressways in New Zealand
National	SH 1 (incl. SH 1B, SH 1C) SH 2 SH 3 (incl. SH 3A) SH 4 SH 5 SH 6 (incl. SH 6A) SH 7 (incl. SH 7A) SH 8 (incl. SH 8A, SH 8B)
North Island	SH 10 SH 11 SH 12 SH 14 SH 15 SH 16 SH 18 SH 20 (incl. SH 20A, SH 20B) SH 21 SH 22 SH 23 SH 24 SH 25 (incl. SH 25A) SH 26 SH 27 SH 28 SH 29 (incl. SH 29A) SH 30 (incl. SH 30A) SH 31 SH 32 SH 33 SH 34 SH 35 SH 36 SH 37 SH 38 SH 39 SH 41 SH 43 SH 44 SH 45 SH 46 SH 47 SH 48 SH 49 SH 50 SH 51 SH 53 SH 54 SH 56 SH 57 SH 58 SH 59
South Island	SH 60 SH 62 SH 63 SH 65 SH 67 (incl. SH 67A) SH 69 SH 71 SH 73 SH 74 (incl. SH 74A) SH 75 SH 76 SH 77 SH 78 SH 79 SH 80 SH 82 SH 83 SH 84 SH 85 SH 86 SH 87 SH 88 SH 90 SH 93 SH 94 SH 95 SH 96 SH 97 SH 98 SH 99
Former state highways	SH 1A SH 1F SH 2A SH 2B SH 15 SH 15A SH 17 SH 36 SH 40 SH 47A SH 49A SH 50A SH 52 SH 57A SH 61 SH 70 SH 72 SH 73A SH 89 SH 91 SH 92
Touring routes	Twin Coast Discovery Highway Thermal Explorer Highway Pacific Coast Highway Classic New Zealand Wine Trail Alpine Pacific Triangle Great Alpine Highway Foothills Scenic Route Inland Scenic Route Central Otago Touring Route Southern Scenic Route