not sure if it has been found because i am not a cod 4 person. when you are on top of the bridge in overgrown you go to the end of it(facing the search attacking spawn) and go onto the fence to your left. follow it till you hit the building and jump onto the little overhanging(be careful, you can only stand on some parts of it, i think primarily the outsides), and from there you can jump onto the building, relatively easy and a great spot, if this is new then a person with a capture card send me a message over xbox live and come film it. gt- Executionist678