Have you ever driven on a cobblestone street? There are a few in the city where I grew up and it's pretty obvious why we don't build that way anymore. It's like driving on an uneven dirt road, you're lucky to get above 25MPH consistently lest you want to risk damaging your car.
Nobody was going 55-75mph+ with multi-thousand pound vehicles on cobblestone streets.
Potholes lead to vehicle damage, property damage and death.
If society can't afford roads and therefor can no longer afford to conduct commerce, society can't afford to exist.
Don't get too locked in on the specific.
If we're not going to allow that, there's no need for money at all. We'd vote on what needs doing, and it would always be something like mending roads, and we'd all have to knuckle down and do it, through a conscription-like system, on pain of pain. It would never be fixing the broadband, though, because broadband is a crazy imaginative project, like building a pyramid, so there wouldn't be any.