Does Fort Crevecoeur lies along the Missouri River?

Although there are cities which lie across the Missouri river from each other, such as: Pierre and Fort Pierre, South Dakota Bismarck and Mandan, North Dakota and others, none of them are really...

They are located along rivers because river passages are important for trade. the trade is usually ammunition and food. so if one of those boats sinks then that side starves and the forts win.

Many hundreds of cities are not located on the Missouri

Corn, rice, and wheat were grown along the Missouri river in the early late 1800's.

2,540 miles (4,087.72 kilometres), 2,341 miles (3,767.46 kilometres) and 3,767 kilometres (2,340.71 miles)