Building Blocks Of Auckland
There are also big infrastructure projects needed to keep Auckland moving, whilst at the same time keeping emissions low. By creating an underground railway system, City Rail Link will substantially increase rail capacity, and allow more people to take public transport. The Auckland Light Rail project will enable tens of thousands of new houses to be built by creating a high capacity transport network that stretches from the central city to Māngere.
Every kilometre of State Highway uses between 14,000 and 20,000 tonnes of aggregate.
The average sealed suburban road requires 4000 tonnes of aggregate per kilometre.
Each new house requires 250 tonnes of aggregate.
The aggregates from Stevenson Drury quarry are currently being supplied to the Papakura to Drury four laning project and is found in the concrete used in local and Auckland wide projects.
How will we keep construction affordable as our city grows? The cost of aggregate doubles every 30km it is transported. Therefore keeping aggregate local will help to keep the costs of aggregates down. Right now Auckland has a deficit of aggregate. It consumes more aggregate than it produces, so a lot of aggregate has to be transported from as far away as Huntly.
The Stevenson Drury quarry is one of the major sources of aggregate within Auckland, and we need to ensure we have an aggregate source well into the future. We have identified an opportunity to expand aggregate extraction in the northern part of our site. This will mean we can continue working out of our existing operation rather than finding a whole new source of aggregate in Auckland, or carting aggregate from long distances away.