What Happens When a City Sprawls Too Much?

Apparently, finding the revenue needed to upkeep all those sprawling roads can become a major problem:

Tulsa is about as large geographically as Boston, Pittsburgh, Pa., Minneapolis and San Francisco -- combined.

But the city doesn't have nearly the population needed to help pay for the growing street system in all that space, a new City Council analysis shows.

Forty years ago, Tulsa conducted a massive land grab that continues to stretch the city's infrastructure dollars beyond the limit, with streets now averaging the grade equivalent of a "D."