June 28, 2012 ~~~  Left Nebraska City behind on Hwy 75.... bad freeway ... bumpity bumpity bumpity!  Crossed the Missouri River into Yankton, SD about 3:00 p.m.  Cool bridge crossing the Missouri.

Arrived at a South Dakota State Park at 6:00 p.m.  We were surprised that the cost was $24 and the only amenity was electrical.   Still very hot... over 100 degrees again, and we're camped right on the Missouri River, so it's very humid still.  Not quite as bad as Nebraska City, plus we took advantage of the State Park's water in the shower rooms and had nice LONG cool showers!