Another beautiful sunrise over the earthworks near Pukaki Creek Bridge

State Highway 20B Early Improvements Update

7 August 2020

Kia ora koutou,

State Highway 20B Project Updates keep you up-to-date with project progress and upcoming physical works on State Highway 20B (SH20B).

Activities next week (9 - 16 August)

Please note that these works are weather dependent and may be delayed.

During the day (7am to 6pm)

Zone 1 (Pukaki Bridge to East of Campana Road)

• Installation of network/storm water drainage lines and culverts between southern verge and median, Pukaki Creek Bridge and the Aviation Security entrance
• Earthworks and top soiling between Orrs Road and Waokauri Bridge
• Installation of network/storm water drainage and subsoil drainage from Orrs to Waokauri Bridge.
• Common service trenching along the shared user path alignment between Aviation Security Road and Orrs Road.

Waokauri Bridge

• Night time piling work scheduled for 17 August
• Steel fixing on the headstock on the western side of the bridge prior to pouring concrete. Once complete, we will begin works on the headstock on the east abutment.

Zone 2 (East of Campana Road to SH20)

• Retaining wall works at the eastern end of Manukau Memorial Gardens
• Soil stripping west of Manukau Memorial Gardens entrance, preparing for subgrade, installing subsoil drains
• Watermain installation near SH20, with associated earthworks
• Ongoing earth and utility works on the Prices Road corner
• Stripping topsoil east of retaining wall, commence cut to waste operation

Utilities (throughout the site)

• Exposing fibre optic ducts for relocation
• Service investigation and relocation works throughout the site
• Activating the new Spark tower and removing the old one
• Complete hauling Chorus cables across Waokauri bridge to prepare for connecting a new network
• Utility relocation work to enable network drain install between Prices Road and Manukau Memorial Gardens

At night (all zones from 9pm to 5am)

• Barrier realignment and ongoing installation 
• Extensive exploratory works in the verges and beneath the existing road to verify the location of existing services.
• Network drainage and stormwater drainage Pukaki Creek Bridge to Waokauri Bridge
• Saw cutting existing road for new service and drainage crossings
• Trenching works for ducting and drainage at multiple locations throughout the site
• Piling works at Waokauri Bridge

SH20B has introduced the following safety measures to protect all road and shared path users including two temporary signalised road crossings for people on foot and on bikes:

• All traffic must turn left both into and out of properties and side roads
• Vehicles turning into driveways and side roads on the southern side must watch for bike and foot traffic on the temporary shared cycle and walking path
• Night time detours will likely be in place from Sunday to Thursday between 9pm and 5am. Please follow the posted detour routes
• The speed limit for SH20B is 50km/hr from Manukau Memorial Gardens to Tom Pearce Drive.

Looking Ahead

A comprehensive programme of night works is in place to enable trenching for utility services and ducting at multiple locations across SH20B. Posted detours will be in place. We apologise for any inconvenience and thank you for your patience.

Please drive safely and allow extra time for your journey. 

BUS ROUTE 380

Due to the road works on SH20B, please expect delays and allow extra time for your journey for those using Bus Route 380. Thank you for your understanding.

Contact us

Please call us at 0800 796 796 or email sh20B@nzta.govt.nz if you have any questions about the SH20B Early Improvements project.

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 www.nzta.govt.nz/projects/southwest-gateway/20connect/