The Crossing on the Missouri: Why Bismarck Exists Where It Does

Everything about Bismarck and Mandan comes down to this river. The Missouri is the longest river in North America, and this bend in its course is the first point where crossing it was both necessary and feasible for a transcontinental railroad heading west. The Northern Pacific arrived here in eighteen seventy-three and finished its bridge in eighteen eighty-two, linking the rails of the eastern United States to the open territory beyond.

Before the bridge, the crossing was made by steamboat and ferry. The Missouri was the main highway of the Northern Plains for decades, carrying fur traders, explorers, and supplies to military posts deep in the interior. Bismarck was the last major port before the river became too shallow and braided to navigate reliably.

The Mandan and Hidatsa had lived at this crossing for the same reason. Control the river, control the trade. Empires are built on geography, and this geography built a city.