Fledgling woodpecker on a city street?

A fledgling woodpecker fell out of his nest right when I was walking by. I know at this age they are supposed to be on the ground but he seemed dazed by the fall and on this street there are so many cars and dogs I was worried about him but I didn't want to move him far from his nest where his parents couldn't find him. So I put him up in a flower pot that was high enough so the dogs wouldn't get to him but I don't think he will get hurt jumping out of it. Did I do the right thing? Would it have been better to just leave him on the ground?