Lewis and Clark Bridge and Interpretive Site

By editor

Culbertson, Roosevelt County, Montana

The Missouri River at Culbertson flows with a deliberate and unyielding pace, its water laden with the rich sediment of the northern plains, a wide brown ribbon carving its way eastward toward its confluence with the Yellowstone River. This stretch of the Missouri has witnessed the passage of countless creatures and peoples over millennia. Here, the river serves as both boundary and highway, its banks sculpted by geological forces stretching back to the late Cretaceous period, roughly 70 million years ago, when ancient seas laid down the sedimentary layers beneath the plains.

The river itself is a living chronicle of natural history. Its channel here reflects the erosive work of the last Ice Age’s glacial meltwaters, which reshaped much of Montana’s terrain. The Missouri’s banks near Culbertson expose alluvial terraces and floodplain deposits, where cottonwoods (Populus deltoides) and plains cottonwoods cling to the soil, their roots stabilizing the river’s edge. The call of the western meadowlark (Sturnella neglecta) and the occasional flight of the American white pelican (Pelecanus erythrorhynchos) punctuate the air, a reminder of the river’s role as a vital ecosystem for avian species.

In August 1806, the Lewis and Clark Expedition crossed this very stretch of the Missouri on their homeward journey. After more than two years of exploration, their pace quickened, driven by the desire to return to St. Louis and the familiar world they had left behind in 1804. The expedition’s journals describe the crossing near what is now Culbertson, though their exact campsite lies uncertain. Captain Meriwether Lewis noted in his journal on August 14, 1806: “We crossed the river this morning at Crow Ford, the water about knee deep, the bottom gravelly with a swift current.” This “Crow Ford” was a natural shallow point used by indigenous peoples and wildlife alike.

The name Crow Ford recalls the raid campaigns of the Crow Nation, whose warriors traversed this crossing to reach the northern plains. The Assiniboine people, who lived in the area and whose language gave the ford its name, recognized this site’s strategic importance for centuries. Long before European contact, vast herds of buffalo (Bison bison) traveled this corridor, their hooves shaping the grasslands and fertilizing the soil with their passage. This crossing was a nexus of natural migration and human travel, a place where the rhythms of the land and its inhabitants met.

The Lewis and Clark Bridge, completed and dedicated in 1930, spans this same river stretch, linking Montana’s Highway 2 across the Missouri. Locally known as the Wolf Point Bridge, it carries the weight of modern transportation over the waters that once bore canoes and rafts of the Corps of Discovery. The bridge’s riveted Pennsylvania through truss design, a complex engineering solution of the early 20th century, represents the last of its kind in Montana and earned a place on the National Register of Historic Places in 1997. Its steel framework contrasts sharply with the organic forms of the river and surrounding landscape, yet it performs the same function as the natural ford once did: enabling passage across a formidable obstacle.

Before the bridge’s erection, ferries operated at this crossing from 1895 to 1920, often at the mercy of seasonal changes. Winter crossings particularly challenged travelers, as the river froze and ice became the sole means of passage. The hazards of thin ice and swift currents made crossing a perilous endeavor. The continuity of human movement across this river--buffalo, indigenous peoples, explorers, settlers, and now motorists--marks the site as a locus of persistent interaction with the Missouri’s dynamic waters.

Adjacent to the bridge, the interpretive site offers visitors an opportunity to engage with the layered history of this place. Panels display reproductions of the expedition’s journals, maps drawn by William Clark, and the botanical and zoological specimens collected by the explorers’ naturalists. These documents reveal the expedition’s scientific rigor and curiosity. For example, the meticulous sketches of prairie dog burrows and the identification of plants like the sweetgrass (Hierochloe odorata) illustrate their efforts to understand the ecology of the northern plains.

The interpretive site also recounts the expedition’s interactions with the Assiniboine, Mandan, and Hidatsa peoples, whose knowledge of the land and its resources was indispensable. Clark wrote of the Mandan villages near the upper Missouri: “The villages are large and well built, situated on high bluffs overlooking the river. Their agriculture and trade network astonished us.” These native communities provided the expedition with food, horses, and guidance, enabling their passage through challenging terrain.

This corridor of the Missouri River is part of the larger Lewis and Clark National Historic Trail, which traces the expedition’s 3,700-mile route from the Wood River in Illinois to the mouth of the Columbia River in Oregon. The trail covers eleven states, a vast swath of the continent, yet the river itself remains the unchanging axis. As Clark observed in a 1805 journal entry, “The river is our guide and our lifeline, flowing tirelessly toward the sea.” The Missouri’s course dictated the expedition’s path and continues to shape the landscapes through which it passes.

The bridge and interpretive panels eventually will give way to newer structures and displays, but the Missouri will persist, its waters carving channels, nourishing ecosystems, and sustaining human settlements. The geological processes that formed the river valley continue their slow work, depositing sediments and creating new habitats. The river’s flow links the past to the present, a natural continuum in a land of deep time.

Standing at the bridge, one senses the layered histories embedded in the soil and water -- the ancient geologic epochs, the migrations of buffalo herds, the journeys of indigenous nations, the passage of explorers, and the toil of settlers. The river's current moves eastward, indifferent to the human stories carried upon its banks, yet it carries those stories forward nonetheless.

See also

• Lewis and Clark Bridge and Interpretive Site at Culbertson, Roosevelt County
• Lewis and Clark National Historic Trail at Fort Benton, Chouteau County
• Evidence of the Expedition at Glendive, Dawson County