As a young engineer, I used to sit in city council chambers during budget season, doing my best to help the cities I worked with figure out what to do next. These were communities I cared about, places I wanted to see thrive. But the meetings themselves were often bewildering.
People would ask questions that seemed simple—How much debt do we have? What’s in the rainy day fund? Can we afford this project?—and the answers would be vague or nonexistent. We might get a spreadsheet here or a fund balance there, but the big picture was always murky.
Related: The Growth Ponzi Scheme Revisited: Houston as a Case Study.
More than once I saw cities start a budget season with a massive deficit—hundreds of thousands, even millions of dollars in the red—and a few weeks later, the deficit was just… gone.
No tax increases. No service cuts. Just vanished.
It didn’t take long to realize that the finances of cities aren’t just confusing. They are opaque in a way that is bad for everyone.
What Are Cities Actually Promising?
When we started putting together the Finance Decoder at Strong Towns, I had two big questions I wanted to try and answer. The first one had to do with infrastructure: Can we quantify the infrastructure promises a city has a city made?
Every mile of road, every pipe in the ground, every pump or sewer or sidewalk—these are all promises. They’re not just infrastructure. They’re obligations. Residents pay their taxes with the reasonable expectation that the city will maintain all the infrastructure it has built—keep the roads drivable, the pipes functioning, the parks open and safe. But over and over again, I’ve found that few cities have even a rough estimate of how big those promises actually are, let alone a plan to fulfill them.
Cities are required to track their tangible capital assets. That means documenting (or calculating) the cost of everything they’ve built—the roads, pipes, water treatment facilities, parks, city buildings, and so on. And they’re also supposed to estimate how much life is left in each of those assets. In theory, this gives you a sense of the city's long-term obligations.
In practice? It’s a guess. Often a very generous one.
Accountants treat these assets like they depreciate in a straight line—25 years for a road, let’s say—and calculate a “book value” based on how much of that life is left. But that’s not how infrastructure works. Some things fall apart faster than expected. Some assets are never properly maintained. Others were never built to a durable standard in the first place. And so the real cost of maintenance and replacement—the actual burden cities face—is never reflected in these numbers.
My sense is that this kind of analysis, while the best available to us, still significantly overestimates a city's capacity to meet its infrastructure maintenance obligations. The assumptions baked into the accounting—about lifespan, about build quality, about upkeep—are overly optimistic. They paint a picture that looks more stable than it actually is.
Even so, we see a consistent and troubling pattern reflected in the results of the Finance Decoder. City after city has low and declining rates of infrastructure life remaining. They’re not maintaining what they’ve built. They’re falling behind. And they’re doing it quietly, because a failing road, a cracking sidewalk, and a sagging pipe are easy things to ignore.