Western Ring Route

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State Highway 18 NZ.svgState Highway 16 NZ.svgState Highway 20 NZ.svg

Western Ring Route
Upper Harbour Motorway (SH 18)
Northwestern Motorway
SH 20
Route information
Maintained by New Zealand Transport Agency
Length: 48 km (30 mi)
History: First section completed – 1955
Major junctions
North end: State Highway 1 NZ.svg SH 1 near Rosedale
  State Highway 16 NZ.svg SH 16 at Westgate
State Highway 16 NZ.svg SH 16 at Waterview
State Highway 20a NZ.svg SH 20A at Mangere

State Highway 20b NZ.svg SH 20B at Puhinui
South end: State Highway 20 NZ.svg SH 20 at Manukau
Location
Major cities: Greenhithe, Hobsonville, Massey, Te Atatu, Waterview, Mount Roskill, Onehunga, Mangere, Auckland Airport, Wiri
Highway system

The Western Ring Route is a motorway system being constructed in Auckland, New Zealand. It runs along three existing state highways: the Southwestern Motorway (SH20), the Northwestern Motorway (part of SH16) and the Upper Harbour Highway (SH18).[1] When finished it will surpass the Southern Motorway to become the longest motorway in New Zealand at 48 kilometers in length. It will run through Manukau, Waitakere, and the North Shore, bypassing the Auckland city centre and thus providing a second motorway route through the Auckland isthmus.[1][2]

The section of SH20 from Queenstown Road to Richardson Road (the Mount Roskill Extension) opened on 15 May 2009.[3] The section of SH18 connecting the Greenhithe Bridge and SH16 (the Upper Harbour Motorway) and the extension of SH16 to Brigham Creek Road opened in August 2011.[4]

Construction of the last remaining section, the Waterview Connection, began in late 2011.

History[edit]

The ring route had been planned as early as the first half of the 20th century. Some critics have alleged that the rerouting of State Highway 1 over the Auckland Harbour Bridge (to ensure toll revenues) has been a primary contributor to the decades-long (and ongoing) delays. The rerouting is thus alleged to have significantly contributed to the need for a massive motorway through the centre of Auckland, severely damaging inner city suburbs like Freemans Bay and Grafton.[5]

Major junctions[edit]

Location km # Destinations Notes
0.0 State Highway 1 NZ.svg SH 1 Northern Motorway (south) – Auckland Western Ring Route begins
State Highway 1 NZ.svg SH 1 Northern Motorway (north) – Whangarei
Caribbean Drive
Paul Matthews Drive
Unsworth Drive Southbound exit only
2.4 2 Route 26 Albany Highway Motorway begins
Greenhithe 4.3 4 Greenhithe Road Southbound exit and northbound entrance
6.2 6 Tauhinu Road Northbound exit and southbound entrance
7.4 Upper Harbour Bridge over Waitemata Harbour
Hobsonville 8 Squadron Drive Southbound exit and northbound entrance
9 Brigham Creek Road – Whenuapai, Helensville to State Highway 16 NZ.svg north
10 Trig Road Southbound exit and northbound entrance
Westgate 11 Route 32 Hobsonville Road Southbound exit and northbound entrance
State Highway 16 NZ.svg SH 16 Northwest Motorway (north) – Kumeu, Helensville
19.4 Route 32 Hobsonville Road Northbound exit and southbound entrance
Massey East 17.8 18 Royal Road Northbound exit and southbound entrance
Lincoln North 15.6 16 Route 19 Lincoln Road – Henderson
Te Atatu South 13.5 14 Route 13 Te Atatu Road – Henderson
Avondale North 12.3 12 Patiki Road – Avondale, New Lynn Southbound exit and northbound entrance
10.8 11 Rosebank Road Westbound exit and eastbound entrance
Point Chevalier 8.1 8 Route 11 Great North Road – Avondale, New Lynn Southbound exit and northbound entrance
State Highway 16 NZ.svg SH 16 Northwest Motorway (east) – Auckland City Centre, Port Current terminus
Waterview Tunnel
Mount Roskill Maioro Street Current terminus
Mount Roskill 18 Route 4 Dominion Road
Hillsborough 16 Route 15 Hillsborough Road
15 Route 12 Queenstown Road — Auckland City Centre Northbound exit and southbound entrance
Onehunga 13 Neilson Street — Onehunga Wharf, Onehunga, Penrose, Mt Wellington
Mangere Bridge over Manukau Harbour
Mangere Bridge
12 Mahunga Drive — Mangere Bridge Township, Favona Southbound exit and northbound entrance
Mangere 10 Walmsley Road Southbound
Coronation Road Northbound
9 BSicon FLUG.svg SH 20A — Airport No southbound entrance (use SH20B or Massey Road)
Carriageway mainline connects north to west, traffic proceeding from/to south on motorway must 'exit'.
7 Route 14 Massey Road
Puhinui 3 BSicon FLUG.svg SH 20B Puhinui Road — Airport No northbound exit (use Cavendish Drive)
Southbound entrance and connection to SH 20B and BSicon FLUG.svg
Puhinui 3 Route 30 Cavendish Drive No southbound exit (use Puhinui Road)
Northbound entrance and connection to SH 20B and BSicon FLUG.svg
Manukau CBD 2 Lambie Drive — Manukau City Centre
1 State Highway 1 NZ.svgSH 1 Southern Motorway north — Auckland
State Highway 1 NZ.svg SH 1 Southern Motorway south — Hamilton, Tauranga Western Ring Route ends
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References[edit]

  1. ^ a b "Western Ring Route". NZ Transport Agency.
  2. ^ "Auckland's transport network". New Zealand Automobile Association.
  3. ^ Dearnaley, Mathew (18 May 2009). "Another piece slots into city's commuter jigsaw". The New Zealand Herald. Retrieved 5 March 2010. 
  4. ^ "Pedestrians to hit new motorway". Auckland Now. 3 August 2011. Retrieved 27 September 2011. 
  5. ^ Lee, Michael (1 June 2009). "Sins of the fathers - legacy of harbour bridge". The New Zealand Herald. Retrieved 5 March 2010.