PAN america highway is imaginary
Don,t wory about the PAN-american highway.
In fact it does NOT exist.
It is a string of roads that "sort off" connects Notsh-america to South america... but the more south you come, the more fictive is is.
As an example: Argentina has "it" and so does Chile...... hmmmmm, how can one road be in two places... 2000 km apart?
So, if the papers say "it" is closed..... just take an other road.
Anyway.... blockades like that are "normal" in these area,s.