Project update

Low noise asphalt rescheduled to ensure best results

The low noise asphalt for the CNC, due to start in late November, will now start early in the new year, as one of the key ingredient ‘epoxy’ has been held up in the USA. 

We are very sorry to disappoint the residents near the CNC, as we know you wanted this final stage of the project to be completed as soon as possible. The epoxy gives the low noise asphalt a significantly longer life and keeps its noise reducing powers for longer. It is produced in the USA and like many other products, it has been affected by shipping issues and disruptions caused by Covid-19 lockdowns worldwide.

We did have the option to use a low noise asphalt without epoxy, but this product would only last for 7-8 years instead of 30-plus and as the asphalt starts to wear out, its low noise properties start to reduce. We hope you agree that waiting for a superior product is the right decision.

We have cancelled the booked chip sealing work on QEII Drive until the epoxy is here. At this stage, we expect the delay to be about two months, but we will keep you posted.  

Once the epoxy is here, we will lay the low noise asphalt along CNC from Styx River to QEII Drive as a priority. We will then move to QEII Drive, for chip sealing followed by low noise asphalt, from the double roundabouts to Main North Road.  The final surfacing work for the entire motorway (Cranford Street to the Waimakariri Bridge) and QEII Drive between Main North Road and the Innes Road roundabout is still planned to be finish by April 2022. We will update you on this work via the website and this eNewsletter.

You can also find updates on the CNC website nzta.govt.nz/cnc and on facebook.com/TransportChCh/ and facebook.com/nztasouthisland/

Who to contact, frequently asked questions and videos

If you have questions about the CNC project, now or in the future, you can visit the project website nzta.govt.nz/cnc

Waka Kotahi will continue to manage this page and contact details will be updated on the site as needed.  You could also take a look at our Frequently Asked Questions webpage. Or your question could be answered in one of our Videos.

All the best

Melanie

More information

For more information on the Christchurch Northern Corridor project, visit our website www.nzta.govt.nz/CNC