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New temporary line-marking has been completed for the first kilometre of the job heading east and there are new metal barriers installed on portions of the main carriageway. The temporary Shared use Path (above, right) is fully paved in these areas making for better walking and a smoother ride.

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State Highway 20B Early Improvements Update

9 October 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).

We are making significant progress with paving as we continue to work night and day.

Until now the major work focus at the approach to Pukaki Creek Bridge has been on the southern side of SH20B while it has been on the northern side outside Manukau Memorial Gardens. We are now able to start switching over.

In the coming week, newly constructed and ramped areas of the road between Orrs Road and Campana Road will allow us to re-align the traffic so we can focus on the construction on the northern side.

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Waka Kotahi is proposing a safer speed limit of 60km/h replacing the current 100km/h zone in SH20B

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Public consultation to start from 12 October to 8 November

Waka Kotahi is having public consultation on a new speed limit and a bylaw on bus/T3 lanes along SH20B.

Waka Kotahi is improving State Highway 20B (SH20B) to provide a safer journey experience and more reliable travel choices with new priority lanes in each direction between Pukaki Creek Bridge and the interchange with State Highway 20.

To provide safer and more reliable journeys on SH20B, we want to hear from you on the proposed speed limit change from the current 100km/h to 60km/h and the bylaw on the dedicated bus and Transit 3 (T3) lanes.

The public consultation begins from next Monday 12 October to 8 November. You can provide your feedback by either:

  • completing our online survey
  • downloading and completing the consultation form.

Please check out updated information on 20Connect from next Monday 12 October and have your say.

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Project progress

Activities next week (11 - 18 October)

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

During the day (from 7am to 6pm)

Zone 1 (from Pukaki Creek Bridge to East of Campana Road)

  • Second layer of asphalt has been laid for road widening
  • Pavement laid at Aviation Security
  • Kerb, channel and barrier (concrete and temporary steel) installation between Pukaki Creek Bridge and the Campana Road Intersection
  • Preparing subgrade from Orrs Road to Waokauri Bridge
  • Stock fencing will continue to be installed by Campana Road

Waokauri Bridge

  • The first half of the walkway demolition is now complete and all three headstocks are poured
  • Installation of the south hollowcore beam and barriers at night
  • A 300-tone crane will be onsite to land the beam/barriers on Thursday night (weather dependent)

Zone 2 (from East of Campana Road to SH20 Interchange)

  • Preparing subgrade west of the Manukau Memorial Gardens entrance
  • Earthworks batter cuts approaching the SH20 interchange
  • Construction of a driveway at SH20 interchange
  • Filling operation to the east of the surcharge and preparation of base layers
  • Installation of drainage between Prices Road and Manukau Memorial Gardens
  • Starting the installation of service ducts
  • Demolition of foundations for the recently removed overhead message board gantry near Manukau Memorial Gardens

Utilities (throughout the site)

  • Common service trenching between Pukaki Creek Bridge and Campana Road has been completed
  • Preparing to install a new power transformer at Orrs Road and liven the new cables during the second week of October
  • Preparing to install a new power transformer by the Manukau Memorial Gardens and change over all the connections
  • Installation of street lights throughout the site

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

There will be no through traffic from SH20 Interchange to the Tom Pearce Drive roundabout. Please follow the posted detour signs on SH20B.

People on foot, bikes and residents will still have access.

The road will be under either stop/go or full road closure traffic management

  • Trenching works for drainage in the verge are ongoing.
  • The main focus of nightshift is continuing with asphalt pavement replacement along the existing carriageway.

Safety

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. Manukau Memorial Gardens is exempt from left-turn movements
  • Vehicles turning into driveways and side roads on the southern side must watch for bikes 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 50kph from Manukau Memorial Gardens to Tom Pearce Drive, except at crossing points and coned paving areas where the speed will briefly drop to 30kph. Please drive safely and allow extra time for your journey.

Looking Ahead

An ongoing 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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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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