ElI5: why is it that we tend to have more pot holes on street roads but not many on freeway or highways?

Question

ElI5: why is it that we tend to have more pot holes on street roads but not many on freeway or highways?

In: Engineering

Answer 1

Interstate highways and highways are built differently than your average city street and are better maintained than a city street because they have that much more traffic that will be traveling at higher speeds.

They have better drainage due to not being hemmed in by sidewalks and curbs.

And if they do start to develop any type of defect, it’ll be patched asap.