The suburbs are known for driving and therefore have a lot of roads. How many vehicles does it take to maintain the county’s share of roads? Here is the number from DuPage County, Illinois:

She noted the county’s division of transportation takes care of 220 miles of county highways and 92 miles of multiuse trails. It also maintains 650 vehicles in the countywide fleet and is responsible for snow removal on county roads.
This sounds like a lot of vehicles and I do not know if it is a lot or a little compared to similar-sized counties. At least in this story, the county is looking for a bigger transportation facility to meet all its need for space.
So in one suburban county, there are multiple actors responsible for the roads: the state for interstates and other highways, townships for some roads, municipalities for some roads, and the county for some roads. Is this the best way to approach things? Does each government body have similar vehicles? How close are each other’s roads to each other? If starting suburbia from scratch from this point on, would it be better to have one body address all the roads?
Roads are near sacred in the United States so I understand the attention paid to them. Yet the resources and energy required to maintain them, let alone expand them, is large.