For my first post on the forum- I will tell you that this is a yellow bellied slider. They are native to GA. It is an older individual, based on how melanistic he is, and it is a male. Males have those long nails on their front legs that you see in your second photo. Good job saving him. Six lanes is a lot to get accross. I would just return him to the closest body of water to where you found him.Just rescued this guy/gal. I found it crossing a 6 lane rd. Funny thing is there is no body of water anywhere near where I found it. I'm not sure what species. If it's native to GA I will take it to a nearby lake to release.
SO wonderful to see!!!!!Thanks, and welcome to the forum. That's what I thought but he was a lot darker than I usually see. I just released him into a lake at a nearby park.