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Culvert works at Manukau Memorial Gardens with physical distancing being observed by all crew members


State Highway 20B Early Improvements Update

15 May 2020

Kia ora koutou,

As New Zealand officially moved to COVID Alert Level 2 from Thursday 14 May, we expect a significant increase in traffic. Please drive safely and note the maximum speed you can travel on State Highway 20B is 50km/h.

State Highway 20B Project Updates will continue to keep you up-to-date with project progress and upcoming physical works on State Highway 20B.

What we did last week (4 – 11 May)

  • Outfall pipe works and vegetation clearance on the eastern side of  Manukau Memorial Gardens entry
  • Provision of temporary car parks for mourners outside Manukau Memorial Gardens
  • Removal of the stone wall forming the old entry into Manukau Memorial Gardens
  • Earthworks at multiple locations between the Auckland Airport Aviation Security Gate and Campana Road
  • Continued fencing installation for fuel line protection on the southern side of Waokauri Bridge
  • Service location works throughout the site
  • Removal of stock fencing from Campana Rd to Pukaki Creek Bridge and installation of temporary pedestrian fencing

Activities for this week (11 – 18 May)

  • Continuing outfall drain works and vegetation clearance at Manukau Memorial Gardens
  • Construction of a lifting pad near the entrance of Manukau Memorial Gardens to facilitate the installation of a large manhole chamber
  • Preparation for installation of wick drains at Manukau Memorial Gardens
  • Installation of erosion and sediment controls between the Aviation Security Gate and Pukaki Creek Bridge
  • Continuing earthworks at multiple locations
  • Service location works throughout the site
  • Removal of existing street lights from Pukaki Creek Bridge to Orrs Road
  • Commencement of storm water drainage works between Campana Road and Pukaki Creek Bridge

What’s happening next week (18- 25 May)

Please note that these works are weather dependent and subject to possible delay.

  • Crane lift to install a large manhole chamber near the entrance to Manukau Memorial Gardens
  • Topsoil stripping and undercut works at Manukau Memorial Gardens
  • Wick drain installation at Manukau Memorial Gardens
  • Continued earthworks at multiple locations between Pukaki Creek Bridge and Campana Road
  • Service location works throughout the site
  • Continued storm water drainage at the public viewing platforms

Looking ahead

In the coming months we plan to carry out some utility services works by trenching across Puhinui Road at night, when traffic flows are lightest.






Please take care around traffic and pedestrians gathering outside Manukau Memorial Gardens.

For residents in Campana and Prices Roads, please be mindful of truck movements between 7am and 7pm and ensure children and animals are supervised when using these roads.

The speed limit for State Highway 20b is 50km/h from Manukau Memorial Gardens to the Pukaki Creek Bridge. Please drive safely and allow extra time for your journey.




Contact us

If you have any questions regarding the SH20B Early Improvements project, please call us at 0800 796 796 or email



Project overview


Waka Kotahi NZ Transport Agency and Auckland International Airport Limited are upgrading State Highway 20B for better and more reliable travel options with a new shared path and additional priority lanes between Pukaki Creek Bridge and State Highway 20.

This project will integrate with improved transport facilities within the airport precinct along SH20B and at the upgraded Puhinui Station Interchange.

The project is the first step of the Southwest Gateway programme to provide better public transport, walking and cycling facilities with safer and more efficient freight movements to, from and around Southwest Auckland.

Fulton Hogan undertakes this work on behalf of Waka Kotahi.

Key early improvements on State Highway 20B to be delivered by 2021 include:

  • A safe place for people to walk and ride bikes
  • Safety improvements including central median barrier protection, improved lighting and a reduced speed
  • Improved pavement, drainage and stormwater treatment
  • Two improved intersections at Campana Road and Manukau Memorial Gardens.

Waka Kotahi NZ Transport Agency works to create transport solutions for all New Zealanders – from helping new drivers earn their licences, to leading safety campaigns to investing in public transport, state highways and local roads.

For more information on the project, you can also visit our website at