So I was poking around on street view and encountered this:
https://www.google.com/maps/@-7.549852,-63.077213,3a,46.7y,219.44h,88.81t/data=!3m4!1e1!3m2!1sBVyiO72VmhIe0N3rSWDdHw!2e0
This junction is pretty remote. But the Brazillian government built a roundabout here instead of a T intersection.
Gotta say... that's kinda neat.
I would say that the road was upgraded at some point.