Yes, I see that, now that I pulled up the plats available from the Digital Library at the University of Missouri. There are long lots on the Missouri River and also on the Mississippi River. According to Ekberg, the reason the lots are long and narrow is because each freeholder (the lots were privately owned) wanted to minimize the number of times that he had to turn his team of oxen around when plowing the land. Each lot is usually 3 or 4 arpents (an arpent is about 192 feet) wide. This was a feature of French settlement in the Illinois Country. Thanks for adding Florissant, which was originally named Fleurissant, or "blooming", in English, to the places in Missouri that feature this land use pattern.