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(Photo: Tanji Ahsan) We can do this! The on-site maintenance team attending a safety pre-start wearing masks and maintaining physical distancing

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State Highway 20B Early Improvements Update

14 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 (16 - 23 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 the southern verge and median between Pukaki Bridge and the Aviation Security entrance
  • Earthworks/top soiling between Orrs Road and Waokauri Bridge
  • Installation of network/storm water drainage and subsoil drainage Orrs Road to Waokauri Bridge.
  • Common service trenching along the shared use path alignment between Aviation Security and Orrs Road

Waokauri Bridge

  • Work on the abutment headstock on the east side of the bridge involving excavating, fixing steel and pouring concrete.

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 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 the new retaining wall, then commence cut to waste operation
  • Installation of drainage between Prices Road and Manukau Memorial Gardens
  • Starting the construction of new Variable Message Sign gantry footing east of Prices Road

Utilities (throughout the site)

  • Chorus Fibre Optics across the north side of Waokauri Bridge will be livened over the weekend and the old network on the southern side will be disconnected
  • Common services trench work continues and is planned to finish between Pukaki Bridge and Orrs Road by the end of next week.

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

  • Ongoing barrier realignment and installation 
  • Extensive exploratory works in the verges and beneath the existing road to verify locations of existing services.
  • Night time paving offline so road users are not affected. The shared use paths will move temporarily to accommodate the works
  • Network and stormwater drainage works between Pukaki Creek Bridge and Waokauri Bridge
  • Saw cutting existing road for new services and drainage crossings
  • Trenching works for ducting and drainage at multiple locations throughout the site
  • Scheduled to start on Monday or Tuesday nights, piling works at Waokauri Bridge are expected to take three nights to complete including drilling to six metres and installing the pile casing on the first night. Removing spoil and installing the pile cage on the second night. The final night will see concrete poured into the pile.

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. Please drive safely and allow extra time for your journey.

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. 

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Waka Kotahi adjusts to COVID-19 alert levels

Waka Kotahi confirms that all our construction projects in the Auckland region are operating under COVID-19 Alert Level 3 protocols from Midday Wednesday.

The sites are working under the same strict health and safety protocols that applied under Alert Level 3 in April. That includes working in bubbles to limit contact with other work teams, restricted access to sites, requirements for workers to increase hygiene measures, maintain physical distancing, and use additional personal protective equipment and clothing.

The safety of workers and road users is our top priority, and we're working with Fulton Hogan on the SH20B Early Improvements operating plan that aligns with the strict industry standards provided by Construction Health and Safety NZ (CHASNZ).

Road maintenance crews are also working under Alert Level 3 health and safety protocols to ensure Auckland’s transport network is safe for road users.

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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.

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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.

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Project overview

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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/

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