New Zealand State Highway 51

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State Highway 51 NZ.svg

State Highway 51
Route information
Maintained by NZ Transport Agency
Length21.2 km (13.2 mi)
Major junctions
North end SH 2 / SH 50 Hawke's Bay Expressway near Napier
South endKenilworth Road in Hastings
Highway system
SH 50SH 52

State Highway 51 (SH 51) is a New Zealand state highway that runs between Napier and Hastings via Clive. Known locally as the Coastal Route, it was the main route between the two cities prior to the completion of the Hawke's Bay Expressway.


The route that SH 51 follows is part of the original route between Napier and Hastings, and prior to 1 August 2019 formed part of State Highway 2.

Between the late 1960s and 2011, the nearby Hawke's Bay Expressway was constructed, providing a high-speed bypass of Napier and Hastings. As the expressway was constructed in seven sections over 43 years, it had three separate state highway numbers (SH 2B, SH 50 and SH 50A), despite the expressway being a single length of road and being considered the spine of the Hawke's Bay roading network.[1] This resulted in a confusing driving experience for motorists, made even more so when 9.8 kilometres (6.1 mi) of SH 2 between the northern outskirts of Hastings and the southern terminus of the expressway at Pakipaki was revoked in 2005.[2]

In 2019, an opportunity to renumber the Hawke's Bay state highways arose through the exchange of Meeanee Quay and Pandora Road in Napier (part of SH 2) becoming a local road under the authority of the Napier City Council, and nearby Prebensen Drive becoming a state highway under the authority of the New Zealand Transport Agency.[3] On 1 August 2019, the renumbering took effect: [4]

  • The entire Hawke's Bay Expressway became SH 2. SH 2B and SH 50A were revoked, while SH 50 continued to run over a section of the expressway, and was co-signed with SH 2 over this section.
  • The former SH 2 between Napier and Hastings became SH 51, remaining a state highway alternative to the Hawke's Bay Expressway.
  • Taradale Road, Hyderabad Road and Georges Drive, previously part of SH 50, also became part of SH 51, with SH 50 being shifted to run via Prebensen Drive.

The creation of SH 51 affected approximately 120 people and businesses with an address change along two sections of the route where the name of the road was the state highway number. Their addresses were automatically changed from State Highway 2 to State Highway 51 by New Zealand Post.


State Highway 51 leaves the Hawke's Bay Expressway at a roundabout west of Napier. It initially heads to the north-east on Taradale Road, before following Hyderabad Road for a short distance. It then runs to the south of the Napier city centre along Georges Drive.

SH 51 then meets the Hawke's Bay coast and turns south on Marine Parade. The route then leaves Napier and follows the coast before heading inland at the Ngaruroro River estuary. It runs through the small town of Clive and passes to the east of Whakatu before turning towards Hastings at a roundabout at Mangateretere.

Approaching Hastings from the north-east, the SH 51 designation ends in the outskirts of Hastings at the Kenilworth Road intersection. The route continues into central Hastings as Karamu Road North.

Major intersections[edit]

Territorial authority Location km jct Destinations Notes
Napier City Onekawa 0 New Zealand road sign W11-1.svg SH 2 north (Hawke's Bay Expressway) / SH 50 north (Hawke's Bay Expressway) – Taupo, Gisborne
SH 2 south (Hawke's Bay Expressway) / SH 50 south (Hawke's Bay Expressway) – Hastings
Classic-nz-wine-trail.png Taradale Road – Tamatea
SH 51 begins
39°30′38″S 176°52′36″E / 39.510598°S 176.876623°E / -39.510598; 176.876623 (Start of SH 51)
Marewa 2.3 New Zealand PW-60.svg Palmerston North–Gisborne Line
2.4 New Zealand road sign W11-1.svg Airport Sign.svg Hyderabad Road – Port, Taupo, Gisborne, Tamatea To (State Highway 50 NZ.svg)
2.9 New Zealand road sign W10-4.svg
New Zealand road sign W11-2.1 R.svg
Thackeray Street – City Centre
3.0 New Zealand PW-60.svg Palmerston North–Gisborne Line
Te Awa 5.1 New Zealand PW-60.svg Palmerston North–Gisborne Line
New Zealand road sign R2-2.svg
New Zealand PW-10 (right).svg
Marine Parade – City Centre
Awatoto 10.9 New Zealand PW-44.svg Tutaekuri River
Hastings District Pakowhai
Clive 11.6 New Zealand PW-44.svg Ngaruroro River
13.4 New Zealand PW-44.svg Clive River
14.2 New Zealand PW-11 (left).svg Mill Road – Haumoana, Te Awanga Mill Road provides a route to Cape Kidnappers from Napier
Mangateretere 18.3 New Zealand road sign W11-1.svg Pilcher Road – Waimarama, Haumoana
Napier Road – Havelock North
Whakatu Arterial Link – Whakatu
Pilcher Road provides a route to Cape Kidnappers from Hastings
Whakatu Arterial Link provides a route to SH 2 (Hawke's Bay Expressway)
Waipatu 21.2 New Zealand PW-11 (right).svg Kenilworth Road SH 51 ends
39°37′55″S 176°51′52″E / 39.631864°S 176.864487°E / -39.631864; 176.864487 (End of SH 51)
Route continues into central Hastings as Karamu Road North

See also[edit]


  1. ^ "Hawke's Bay's state highways to be renumbered in August". NZ Transport Agency. 18 July 2019. Retrieved 21 August 2019.
  2. ^ "Revoking State Highway—State Highway No. 2, Hawke's Bay Region". NZ Gazette. 4 August 2005. Retrieved 21 August 2019.
  3. ^ "Revoking Section of State Highway 2 and Declaring a Section of State Highway 50, Napier City". NZ Gazette. 26 June 2019. Retrieved 21 August 2019.
  4. ^ "Renumbering Hawke's Bay state highway network". NZ Transport Agency. 18 July 2019. Retrieved 21 August 2019.

External links[edit]