Most of the suburbs where I live aren’t old enough to need sewer/storm and street replacement yet. It can take 60+ years for major infrastructure projects to become necessary, I expect to see municipalities fail as the infrastructure burden cripples their budgets.
Suburbs that had the foresight to develop commercial and industrial areas won’t suffer as much, but bedroom communities that aren’t wealthy will suffer once their infrastructure starts aging. There’s a massive deferred maintenance backlog pretty much everywhere.
The first suburbs were built in the 1880s (the streetcar enabled them). They have a long history of adding and replacing infrastructure as needed. It takes 60+ years, but not everything comes due at once and so it isn't a sudden bill all at once, it is spread out over decades. Roads tend to need significant work after 15-20 years.
Suburbs that had the foresight to develop commercial and industrial areas won’t suffer as much, but bedroom communities that aren’t wealthy will suffer once their infrastructure starts aging. There’s a massive deferred maintenance backlog pretty much everywhere.