There may not be any markers in Georgia for the Great Wagon Trail because the Georgia part of it involved ferries along the Savannah river. There is some mention of the markers in other states at https://piedmonttrailsblog.wordpress.com/tag/great-wagon-road/
Not sure. If you stop in to the Georgia Welcome Center, I'm sure they can answer that. They may even have brochures or maps pertaining to your subject.
Deanna Moss I do not sure. But I saw a lot about Savannah River.
Thanks! Your answer is awaiting moderation.