Urban design of Rosedale retaining wall

You may have seen the enormous retaining wall which has been constructed along the edge of the old Rosedale landfill, adjacent to the Greville Road southbound on-ramp which is needed to support the extended northern busway and shared path. The panel design on the retaining wall is called Te Ara a Tāwhaki which translates to mean the pathway of Tāwhaki. 

Tāwhaki is a semi-supernatural being in Māori mythology who climbed to the heavens and represents the pursuit of excellence.  While traditionally the area was used to harvest food, in recent history, the land became Rosedale landfill.  Te Ara a Tāwhaki encourages us to be mindful not only when harvesting food, but also when treating waste.

Gantry installation ramps up

We’re installing 17 gantries across SH1 and SH18 and one on a local road. Twelve of these will be for large green directional signage and six will be installed with variable message signs. Variable message signs are digital signs that can be changed with the click of a button by the Auckland Transport Operations Centre (ATOC) who monitor all the CCTV cameras across the network. These signs ensure Waka Kotahi can provide people travelling on the motorway with real time traffic information such as ‘incident ahead’ or ‘surface water - travel with care’.

The gantries vary in weight from 1.6 to 24 Tonnes and are between 15m to 54m in length.  Built from structural steel in Napier, they’re then transported in several pieces by truck to Auckland and once on site, the team will build the individual pieces into one large structure so they’re ready to be installed. We’ve installed six across the project so far and the rest will pop up overnight during the next 18 months.

Get ready for traffic changes in July

There are some upcoming changes to how you travel on SH1 and SH18 from next month - find out more about what this means for you below.

SH1 from 12 July: The southbound off-ramp at Upper Harbour Highway will return to its original position – approximately 400m further south than it currently is. This change is needed so we can move our work area to the middle of the motorway where we can continue to build the SH1 to SH18 underpass. The above graphic shows this change.

SH18 from 15 July: We need to shift westbound vehicles from the current lanes so work can continue on building the new road which will become the westbound on-ramp. While you will notice that you’ll be driving on a different part of the road, traffic cones will guide you along the new route, so you won’t need to make any decisions about where to go.

Dates are subject to change should there be unforeseen circumstances on the night.

More information

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

Visit our website www.nzta.govt.nz/nci