For current projects that are either under construction or under well publicised planning click here. Have a look at Completed Projects for past projects.
Project name |
Project description |
Possible time frame and cost |
SH1 Puhoi to Warkworth |
Four lane motorway. |
Within 10 years, $100m+ |
SH1 Warkworth to Wellsford |
Four lane motorway. |
Between 10-20 years, $100m+ |
Silverdale Interchange |
Interchange improvement to address PM peak queuing issues. |
Within 10 years, up to $50m |
|
Addition of a third lane northbound, to provide extra capacity @ Western Ring Route terminus. |
Within 10 years, under $50m |
|
Provide a semi or full motorway to motorway interchange linking the Northern & Upper Harbour motorways (SH1/18). |
Between 10-20 years, $100m+ |
SH1 Greville Road Interchange |
Interchange improvement to address capacity issues at the western round-about. |
20 years+, $50/100m |
|
A new crossing over the Waitemata Harbour. |
10-20 years, $5bn+ |
SH18 Paul Matthews and Caribbean Drive intersections |
Intersection improvements to allow for better traffic flow between the two, possibly a precursor to the interchange mentioned above. |
Within 10 years, under $50m |
SH18 Greenhithe Road to Albany Highway/Buckley Ave to Tauhinu |
Additional third lane eastbound. |
20 years+, under $50m e. |
SH18 and SH16 interchange additional links |
Additional links heading east and south. |
20 years+, $100m+ |
|
Widening, causeway raising and interchange improvements. |
10-20 years, $100m+ |
SH20 Maioro to Hillsborough |
Three laning southbound. |
10-20 years, $50/100m |
SH20 Queenstown/Neilson Interchange |
Interchange upgrades. |
Within 10 years, $50m e. |
East to west link |
Another link between SH20 and SH1, possibly between Onehunga and SEART vicinity or SH20/20a interchange across to Mt Wellington vicinity. This is a similar plan to the original 1997 SH20 upgrade plan. |
20 years+, $100m+ |
SH20a upgrade |
Grade separation along SH20a (airport motorway) at Kirkbride and Montgomerie, possible widening and new further eastern access to the airport. |
Within 10 years, $100m+ |
SH20 Puhinui Road to SH20a |
Widening existing 1997 section to six lanes. |
20 years+, $100m+ |
SH20b upgrade |
Upgrade SH20b (Puhinui Road airport access) to expressway. |
20 years+, $100m+ |
SH20 Puhinui Road interchange |
Interchange improvements. |
Within 10 years, up to $50m |
SH20 Lambie to Puhinui interchange |
Six laning. |
Between 10-20 years, $50-100m |
|
Interchange improvements and widening. |
Within 20 years $100m+ |
SH1 Tecoma Street Intersection |
Possible closure. |
Within 10 years up to $50m |
SH1 SEART/Mt Wellington |
Interchange improvements (southbound). |
Within 10 years up to $50m |
SH1 SEART to Greenlane |
Additional northbound lane. |
Between 10-20 years, up to $50m |
SH1 Ellerslie interchange |
Improvements. |
Within 10 years, up to $50m |
SH1 Princes St interchange |
Upgrade. |
Between 10-20 years, up to $50m |
SH1 East Tamaki Interchange |
Upgrade. |
Between 10-20 years, up to $50m |
SH1 Papakura to Drury |
Six laning. |
20 years+, $100m+ |
SH1 Drury Interchange |
Improvements. |
20 years+, $50-100m |
SH1 Khyber Pass to Gillies Avenue |
Installation of braided ramps. Braided ramps prevent weaving by allowing under/overpasses for traffic to exit before the traffic preceding it has entered. |
20 years+, within $50m |
SH1 Symonds Street |
Possible closure (either off-ramp or on-ramp or both). |
Within 10 years, up to $50m |
SH1 Wellington Street |
Possible on-ramp closure. |
Within 10 years, up to $50m |
SH16 motorway extension |
Extension of the North Western Motorway from Grafton Gully to the Port. |
10-20 years, $100m+ |
SH16 motorway extension |
Extension of the North Western Motorway to Kemeu. |
10-20 years, $100m+ |
