I have a work site here, tearing down an old gas station, and removing the underground storage tanks. Recently, Palatine Rd and the Plum Grove Rd intersection was widened, and they dumped the old signs on the edge of the property.
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fi837.photobucket.com%2Falbums%2Fzz298%2Fmidamcrossrds%2F100_1428.jpg&hash=fe3fec1e066b5e3601782f88bfe185da1a5047af)
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fi837.photobucket.com%2Falbums%2Fzz298%2Fmidamcrossrds%2F100_1427.jpg&hash=add78e1003dfe070b8ea187568ebda1b1161959d)
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fi837.photobucket.com%2Falbums%2Fzz298%2Fmidamcrossrds%2F100_1426.jpg&hash=73cc7d25cc9307d7d6e0b8a29aae0983c990c0c5)
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fi837.photobucket.com%2Falbums%2Fzz298%2Fmidamcrossrds%2F100_1425.jpg&hash=953d9bd370c4abf74f2cff03593219cba4fde13e)
No idea what will happen to them, but there's nothing overly old, nor any route shields, but the "Call Before You Dig" sign is the most unique of the bunch.