Maja from St. Louis area on 6/23/2019 3:27:29 PM:
Those are areas that were maybe covered by the flowing Missouri River and may not open soon. I suggest calling Bike Stop Cafe in St. Charles. We arranged a shuttle with them 2 years ago when we did a long ride and it worked out great. You could park your car somewhere at a known open section, get a shuttle out somewhere and ride back.