I am working on the Little Rock to St. Louis leg of our late spring road trip and a lot of you have mentioned the Great River Road along the Mississippi River. I have searched on here, on Google, and elsewhere, but I can't seem to find a straight answer as to what roads actually make up the Great River Road. I'm trying to plan ahead by plugging everything into DeLorme Street Atlas USA, so I need the route names or numbers.

So tell me, what roads/routes should we take between Little Rock and St. Louis to stay on the Great River road? Are there any sections we should skip? What are the best sections?

Thank you!