Build unlimited roads

I would like to travel on the Pan American Highway from Prudhoe Bay, Canada to Ushuaia, Argentina.
This system of highways connects all the Americas & is composed of a main axis that crosses the continent from north to south and several transverse secondary axes.
Designed to be a unique road, the Pan American is finally a connection of different roads and highways built by the countries participating in the project.

I was inspired by the layout to imagine what could be a graphic & codified version of some trunks in different countries crossed.