I was at the Arch today and surprised by how high the Mississippi has risen, it is now 5' above flood stage and the road that runs parallel to the river is under 2' of water. The sightseeing helicopter pad and the paddle boat tours are shut down because of the flooding but nothing else that I could see is effected. If the OP can't stay at the casino I would suggest staying at the Sundermeier RV Park in St. Charles, MO Exit 7 off I-370. From there you can either drive into St. Louis, or take the Metrolink from the Lambert Airport Station. A parking garage is about 200 yards from the Arch and the Metrolink station is across the street from it.
2007 Newmar DSDP 4023
Discovery is seeing what everyone else has seen and thinking what no one else has thought.
If you want to see what man made go East; if you want to see what God made go West.