State Highway 2 (New Zealand)


State Highway 2 runs north–south through eastern parts of the North Island of New Zealand from the outskirts of Auckland to Wellington. It runs via Tauranga in the Bay of Plenty, Gisborne, and Napier and Hastings in Hawke's Bay. It is the second-longest highway in the North Island, after State Highway 1, which runs the length of both of the country's main islands.
For most of its length it consists of a two-lane single carriageway, with frequent passing lanes. There are sections of expressway at Maramarua, Tauranga and Wellington.

Route

SH 2 leaves SH 1 just north of Pōkeno, 49 km south of central Auckland. It heads east, crossing the Hauraki Plains before running the length of the Karangahake Gorge, a break in the hills between the Coromandel Peninsula and Kaimai Ranges. From the mining town of Waihi it runs southeast, skirting the edge of Tauranga Harbour, which it crosses on the Tauranga Harbour Bridge before connecting to the 23 km Tauranga Eastern Link, a four lane toll motorway only recently completed. After reaching Paengaroa Junction with SH 33, SH 2 reverts to highway status and follows the coast for a further 34 km, until it reaches the village of Matatā.
From Matatā it heads slightly inland, crossing the Rangitaiki plain to the south of Whakatāne, loops south to Tāneatua, through the Waimana gorge and then back north to the coast near Ōpōtiki. After Ōpōtiki it turns inland, ascending southeast along the valley of the Waioeka River, then winding up to the 725-metre Traffords Hill summit. From here it descends into the watershed of the Waipaoa River following the river valley from Te Karaka to Makaraka, just outside Gisborne, to which it is connected by a short stretch of SH 35.
It then turns south, passing the Wharerata Forest and the isthmus of the Mahia Peninsula, turning west to follow the coast of Hawke Bay. Close to the mouth of the Waihua River it heads briefly inland, passing the Mohaka Forest and Lake Tūtira before rejoining the coast not far from the junction with SH 5 at Bay View. It then joins the Hawke's Bay Expressway and bypasses the cities of Napier and Hastings where the expressway ends at Pakipaki, just south of Hastings.
It continues to head inland from Pakipaki, initially southwest to Waipukurau, then briefly west to follow tributaries of the Tukituki River upstream. Close to Norsewood enters the Tararua District and turns south-west, a direction it maintains for much of the remainder of its journey, crossing undulating country that forms the upper catchment of the Manawatu River. In Woodville, SH 2 meets State Highway 3 at a TOSTO intersection. SH 2 continues south along the Mangatainoka and Makakahi rivers through Pahiatua and Eketahuna, crossing into the Wairarapa valley via the Mount Bruce saddle.
SH 2 follows the Wairarapa valley through the towns of Masterton, Carterton and Greytown to Featherston. The highway then winds through the Remutaka Pass, between the Remutaka and Tararua Ranges, crossing into the Hutt Valley. SH 2 follows the Hutt River down the valley, passing the cities of Upper Hutt and Lower Hutt to the west, to reach the northern end of Wellington Harbour at Petone. From central Upper Hutt, SH 2 widens to a 2+1 road before widening further to four lanes divided at Silverstream, before finally becoming expressway standard with grade-separated junctions south of Melling. The highway follows the shoreline of Wellington Harbour to Ngauranga and the Ngauranga Interchange, where it terminates onto SH 1.
Although the Ngauranga Interchange is the official end of SH 2, it is signed northbound as far back as the Mount Victoria Tunnel, 8 km before it begins.

Spur sections

SH 2 used to have two spur sections:
The section of SH 2 through Mangatawhiri had a poor crash record, and the seven-kilometre Mangatawhiri Deviation was opened in December 2008 to improve safety by bypassing it. Passing lanes in both directions provide safe passing opportunities. Grade-separated intersections improve safety for traffic wanting to cross or join the highway.
SH 2 used to follow former SH 2A's route in Tauranga, along 15th Ave, into Turret Road, and across the harbour to Maungatapu, where it joined SH 29, and then headed across the Maungatapu Bridge to Te Maunga. This was changed in 2009 when a second harbour bridge opened next to the current one, providing four lanes of traffic and an overpass from the harbour bridges to the Takitimu Drive expressway. SH 2A became the old section until it was revoked in 2015.
Before 3 August 2015, SH 2 used to travel via Te Puke. The Tauranga Eastern Link, a tolled motorway almost 23 km from Te Maunga Junction to Paengaroa officially opened on 30 July 2015. SH 2 now follows the Tauranga Eastern Link. The new four lane highway was constructed as part of the National government's Roads of National Significance, improving access from the east and south from Rotorua and Taupō. It is the main route for trucks heading to the Port of Tauranga from Rotorua and the eastern Bay of Plenty, and connects the economically-important central plateau forestry industry with the port for export. This NZTA administered road is tolled at $2.00 for cars and motorcycles and $5.00 for trucks.
SH 2 used to extend into Whakatāne, but recently this section was moved inland to pass through Edgecumbe and Awakeri, with SH 30 extended to Whakatāne to cover the former route.
SH 2 used to run through the centres of Napier and Hastings before running to Pakipaki, following a coastal route between Napier and Hastings via the small town of Clive. In 2005, of SH 2 from the northern outskirts of Hastings, through central Hastings and up to the southern terminus of the Hawke's Bay Expressway at Pakipaki was revoked. Then, in 2019, SH 2 was shifted to the Hawke's Bay Expressway to reduce confusion and better reflect that the expressway is the spine of the Hawke’s Bay roading network, with the previous route between Napier and Hastings receiving a new designation of SH 51.
The Rimutaka Hill Road, transversing the Remutaka Ranges between Featherston and Upper Hutt, has a poor crash record, with many tight 25 and 35 km/h corners, and a lack of safety barriers to prevent vehicles dropping down off the road. The original winding route between Kaitoke and Te Marua was significantly realigned between 2002 and 2006. The tightest and narrowest corner on the road, named Muldoon's Corner after the former Prime Minister's financial stance, is being bypassed with a new wider 55 km/h corner.
River Road, between Maoribank and Silverstream in Upper Hutt, was opened in 1987 to bypass central Upper Hutt. The new route was a two-laned single-carriageway 100 km/h road on the Hutt River's banks, crossing the river at Moonshine, and replaced the 50 km/h route via Fergusson Drive. Most of the road of the road has been widened to three lanes, and median barriers have been installed, with only the Moonshine Bridge and north of Totara Park Drive still having two lanes undivided.
SH 2's southern terminus has also changed. It formed the southern part of the Wellington Urban Motorway when SH 1 finished at the Aotea Quay off-ramp. In 1996, SH 1 replaced this section.

Future developments

Currently there are several projects to improve SH 2. They include:
The busiest section of SH 2 is just north of the Ngauranga Interchange in Wellington, which was measured at km 962 to have an AADT of over 67,000 vehicles both directions. The quietest section of road is near Otoko in the Gisborne District, which was measured at km 390 to have an AADT of fewer than 1000 vehicles.

Major intersections