Eastern Cottonwood (Populus deltoides) in the middle of the road near Brayton, Iowa.

From Interstate 80 take exit 70, turn right onto 750th Street/Littlefield Drive and go north, turn left onto 340th Street, turn left on to Nighthawk Avenue and drive south until you come to the tree.  There is no street sign, so if you get to the three way intersection you have gone too far.  Turn around.