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)
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Installation of network/storm water drainage lines and culverts between the southern verge and median between Pukaki Bridge and the Aviation Security entrance
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Earthworks/top soiling between Orrs Road and Waokauri Bridge
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Installation of network/storm water drainage and subsoil drainage Orrs Road to Waokauri Bridge.
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Common service trenching along the shared use path alignment between Aviation Security and Orrs Road
Waokauri Bridge
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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)
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Retaining wall works at the eastern end of Manukau Memorial Gardens
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Soil stripping west of Manukau Memorial Gardens entrance, preparing subgrade, installing subsoil drains
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Watermain installation near SH20 with associated earthworks
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Ongoing earth and utility works on the Prices Road corner
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Stripping topsoil east of the new retaining wall, then commence cut to waste operation
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Installation of drainage between Prices Road and Manukau Memorial Gardens
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Starting the construction of new Variable Message Sign gantry footing east of Prices Road
Utilities (throughout the site)
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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
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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)
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Ongoing barrier realignment and installation
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Extensive exploratory works in the verges and beneath the existing road to verify locations of existing services.
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Night time paving offline so road users are not affected. The shared use paths will move temporarily to accommodate the works
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Network and stormwater drainage works between Pukaki Creek Bridge and Waokauri Bridge
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Saw cutting existing road for new services and drainage crossings
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Trenching works for ducting and drainage at multiple locations throughout the site
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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:
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All traffic must turn left both into and out of properties and side roads
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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
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Night time detours will likely be in place from Sunday to Thursday between 9pm and 5am. Please follow the posted detour routes
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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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