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"To have a community which says it is sustainable, but is dependent on infrastructure which is not, is a contradiction in terms" said ISCA Chair, David Singleton, in his new thought piece.

"All communities rely on a range of different types of infrastructure to function. To put it simply, for everything that’s above or at ground level, there is something along or under the ground (i.e. infrastructure) which is fundamentally important to a community’s ability to function.

"Designing community level projects from the infrastructure up – and having the infrastructure planned with sustainability in mind – has an enormously positive impact on our economy, our wellbeing and our environment.

"Yet, while infrastructure can contribute to more sustainable and productive communities and cities, it can also reduce their sustainability. Poorly planned, poorly constructed infrastructure can create barriers, can encourage sprawl and can create air pollution.

"This is where the whole infrastructure sustainability argument becomes challenging because it may be that the most sustainable outcome isnotto build a piece of network at all, rather than to build it and make it as sustainable as possible. There is a conundrum here to which no simple answer exists.