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Northern Corridor Improvements

29 July 2022



	Milling the top asphalt layer on SH1 Under the cover of darkness Working in a busy urban environment which thousands of vehicles travel through each day means we can’t close motorway lanes or intersections to get some of the necessary construction tasks we have to carry out during the day. At the moment, a lot of work is done at night when traffic volumes are lower so we have a much smaller impact on the Auckland motorway network which is vital for Auckland’s economy. July has been a pretty wet month with lots of rain which has caused challenges to the team on site. Despite this, they’ve been working through and we caught up with the construction team to find out more about what’s been happening across site. Here’s some of the July facts and stats they shared with us: 785m concrete barriers constructed which is the same length as nearly 8 rugby fields 1880 tonne asphalt laid which required 180 delivery trucks 40 street lights installed in the central median along with 2km of ducting to provide electricity to the street lights



	Crew placing panels in the underpass Latest from the underpass Unseen by thousands of people travelling along SH1 each day, we’re busy working on the direct SH1 to SH18 underpass which will provide a more reliable journey for the movement of people and goods around the Auckland region when it opens next year. Check out this timelapse video we captured showing some of our team working to install one of the 8m high panels which will line the underpass walls – there’ll be just over 80 panels in total – and each one weighs around 13 tonnes! The panels provide passive fire protection for the underpass structure, and we’ll be carrying out more fire protection work in the coming weeks.



	The team recently completed road pavement stabilising for the whole of the NCI project Stabilising the road To build a road, many layers like those of a cake are required to ensure it has the necessary strength and durability. While some sections of new road are fully complete and vehicles are already travelling on them, other sections are in the earlier stages. Recently, the last section of new road was stabilised which marks the completion of this layer across the whole project. Stabilising is the process where lime and cement are injected into the clay subgrade. This is followed by placing layers of high-quality aggregate (stones) along with additional cement and water injected into the material. To complete the road building process, a membrane seal and then new asphalt will be laid on top. These final layers can only be completed in dry weather conditions, so we’ll start this work after winter. Covering a total of 278,000m² – the same areas as 52 football fields - the new roads are a mix of lanes for public transport or are needed to complete the Western Ring Route and its connection with both local roads and the state highway to provide a more reliable journey for the movement of people and goods around the Auckland region.



	Planning North Auckland's transport future Auckland is growing fast with another million people expected to live and work in our city by 2050. To support this growth in North Auckland several transport projects are proposed to provide future communities with safer roads and sustainable travel choices. View our project video. Feedback is being sought on a new rapid transport corridor, new public transport routes, State Highway 1 improvements and walking and cycling networks along with proposed new and improved roads to help everyone move around in a safe, accessible and sustainable transport network. These long-term projects are part of the Te Tupu Ngātahi Supporting Growth programme, a collaboration between Auckland Transport and Waka Kotahi to develop transport networks for future communities in Auckland’s urban growth areas over the next 30 years. They can then be considered as part of the rezoning and release of land by Auckland Council over the next 10-30 years. Te Tupu Ngātahi Supporting Growth want to hear from you. Visit our website to find out more information on future transport plans for North Auckland and provide your feedback. You are welcomed to attend a drop-in session on Saturday, August 13 from 11am to 1pm in the Dairy Flat Hall to speak with the team.

To find out more or provide feedback, please contact our Community Engagement Managers Emma Cushnie and Trish Viall.

Freephone: 0800 624 776

For more information on the Auckland Northern Corridor project, contact us on 0800 NCI Project (0800 624 776) or at northerncorridor@nzta.govt.nz

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