The main highway is Georgia 28, which runs north-northwest to Highlands, North Carolina, and south-southeast to Walhalla, South Carolina (and on to Augusta, Georgia), keeping its number in all three states.
The primary road in question is Georgia 28, which runs north-northwest from Georgia to Highlands, North Carolina, and south-southeast to Walhalla, South Carolina, eventually leading to Augusta, Georgia. The highway's designation remains constant throughout its route across these states.