This rock was laying on the side of the road, having fallen off the cliff and been pushed off the road with a road grader. It took three of us to move it so it didn't fall into the river the next time the grader went by. There is another section that will fall off someday. It will close the road when it happens.
Apparently there was a little drying patch of mud that the dinosaur ran across. The sand blew into the tracks and it was buried for a couple hundred million years, until the bank eroded under this piece which fell about 15 feet to the roadway.
The track on this side is actually a hind track on the top of a front foot track. It seems like there were an unequal number of toes on the fore and hind feet.