The infrastructure needs of cities, how critical are they right now? We all know about what we can see in terms of what's above the city. But what about what's beneath the city, the infrastructure that's lying under the roads and under the buildings? A lot of that was built.... Some of it's 50, 60, or 75 years old. What's the lifespan of that, and how important is it to start to think about replacing all that underground infrastructure?
On May 23rd, 2013. See this statement in context.