Project introduction

We are working with KiwiRail to progress this project that involves constructing an additional northbound lane from Ellerslie–Panmure Highway on-ramp to just after the main highway overbridge. This will help to ease congestion by increasing the northbound section to four lanes.

  • Estimated project dates

    Nov 2014–Mar 2016
  • Estimated project cost

  • Project type

    Road improvements
  • Project status


Project updates


This section of motorway will be widened from three to four lanes northbound. The project is due to start in November 2014 and be completed March 2016.

Stage one included the successful upgrade of the Ellerslie Train Station and relocation of the main highway overbridge piers.



  • The additional lane will increase this section of motorway from three to four lanes which will help to relieve congestion and improve traffic efficiency.
  • The additional lane will be constructed by extending the lane from Ellerslie-Panmure Highway on-ramp to Greenlane, ensuring a continuous northbound passage and improving safety for any merging traffic travelling from Ellerslie–Penrose onto SH1.


Ellerslie Highway to Main Highway - Stage 2

Project features

  • Motorway capacity increased from three to four lanes.

  • Improved electronic motorway signage and new motorway lighting.

  • Relocation of remaining utility services and motorway stormwater drainage.