12 July 2017 | Transmission Gully Project | Media release
As part of works for the Transmission Gully motorway, night works have started to widen a section of State Highway 1 (SH1) north of Tremewan Street.
From 16 July, final works will also start on a section of SH1 near Collins Avenue, to move the southbound lanes closer into the middle of the highway.
Here’s a quick rundown of what’s changing. If you’re driving through the area please take extra care and observe all temporary traffic signs.
Heading north along SH1 near Tremewan Street / Tawa College – during July and August
- From 9 July, night excavation works started to widen the middle of the highway.
- Between 7pm and 5am, the northbound lanes will be reduced to a single lane, with a lower speed limit of 50km/h in place.
- During daylight hours, both northbound lanes will be reinstated, and the speed limit will remain at 80km/h.
- A lower speed limit of 70km/h will be put in place in the coming weeks as these works progress.
- This work will take approximately four weeks to complete, depending on weather.
Heading south along SH1 near Collins Avenue – during July
- From 16 July, we’ll be paving the middle of the highway at night, though this work requires settled weather.
- On 17 July, at night, new lane lines will be painted on the highway.
- On 18 July, motorists will be directed onto the new road layout during the day, and roadside barriers will be moved over at night to close the old lane.
We try to keep these disturbances to a minimum, but neighbours may experience some noise and vibrations from our machinery. We appreciate your patience and understanding, and if you have concerns, please contact us at any time on 0800 84 4636 (0800 TG INFO), or email us at info@tg.co.nz so we can immediately address any concerns.

Map showing the road layout changes on State Highway 1 south of Collins Avenue.
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Map showing the road layout changes on State Highway 1 south of Collins Avenue.
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