People also often say to me that they have a hard time believing that roads that existed 100 years ago STILL exist.
Here’s a good example of a 1904 road and how it’s basically still there, just over shadowed by the 4-lane that ‘replaced’ it.

The pink line is the basic course.
The red line is un-moved original 1904 roadbed that is still drivable.
The orange line is lost original road either by over paying of the 4-lane or simply lost to a farmers field without a trace.