At our first rest stop, we drove right by this deer and only saw it when we got out of the car. Then we noticed that the deer wasn't moving and finally we surmised that it was a statue:
In the East, I-70 mostly parallels U.S. Route 40 which itself follows the old National Road, which was the first federal highway effectively subsidizing the settlement of the Northwest Territory and points west. A mile marker from the National Road is preserved in another rest stop.