We have posted our first video on the video tab, it explains how we are dealing with the soft wet ground we need to build on. There are also some aerial images on the gallery tab of our progress so far.
The installation of wick drains (the grey strips sticking out of the ground) is going well. These drains help to speed up the ground settlement so it happens in months not years. Piling is underway in Winters Road, Main North Road, and Belfast Road. We are using timber piles on the project to support the bridges and subways. Timber piles are being used as they perform better in earthquakes. The working platform (a 0.5m layer of compacted earth and stone) continues to stretch out over the entire length of the motorway alignment.
What is the CNC project
The Christchurch Northern Corridor (CNC) will extend the Northern Motorway through to QEII Drive and Cranford Street and included:
- A new four-lane motorway starting just south of the Waimakariri River to connect with QEII Drive near Winters Road and then continue through Cranford Basin to link with Cranford Street
- An upgrade of QEII Drive to four lanes between Main North Road and Innes Road The addition of a third northbound lane on the Waimakariri Motorway Bridge through to Tram Road
- An upgrade of Cranford Street to four lanes to Innes Road
- Off-road pedestrian and cycle facilities linking to existing and new cycle facilities in the area.
The CNC is the first alliance contracts of this size in the South Island. It is an alliance between the NZ Transport Agency, Christchurch City Council, Fulton Hogan, Aurecon and Jacobs.
The project brings many benefits to Christchurch and Canterbury including: more efficiently movement of Freight in and out of Christchurch and Lyttelton Port, and better access to the industrial growth area in Belfast. The CNC will make travel times in and out of Christchurch shorter and more reliable via all main routes – the CNC, Main North Road, Marshland Road and the Western Belfast Bypass (SH1) to be opened in early 2018.
This new motorway and its connections will be built to high modern safety standards and will also move heavy traffic off suburban roads making them safer, encouraging walking, cycling and the use of public transport – especially through Redwood and Belfast.
For more details on the CNC project, download a copy of the overview map [PDF, 3.9 MB] pictured below.
This new motorway is critical to supporting the continued growth of Christchurch as a business centre and the export hub for the South Island’s economy, and to improving journey times for commuters. Many of these commuters have rebuilt their homes in North Canterbury following the earthquakes.
Safer streets – moving heavy traffic off suburban roads making them safer and encouraging walking, cycling and the use of public transport. The new motorway will be built to high modern safety standards.
Improved access – freight will move more efficiently in and out of Christchurch and Lyttelton Port.
Improved travel times – shorten travel times in and out of Christchurch and improve reliability via all main routes.
Economic growth – enable sustainable residential development in the north of Christchurch and support commercial and industrial development throughout Canterbury.
For more information on ways to reduce congestion on the Northern Motorway visit our Northern Corridor Congestion – Facts, Stats and Answers page.