Rocky Mountains

The Rocky Mountains form the central mountainous barrier on the railway crossing the United States, a route that runs through territory between the Pacific and Omaha described as still exposed to wild beasts and colonized in part by members of the Church of the Latter Day Saints. In the journey eastward, the range is not simply scenery: its elevation and terrain dictate the railroad’s course, while the passage through it marks a dramatic transition from mountain country to the broad plains beyond.

Terrain and Railway Engineering

The railroad’s approach to the Rocky Mountains followed a route shaped by the difficulties of the land. After leaving Ogden, the train travelled north along the Weber River before turning east toward the jagged Wasatch Mountains. Between that range and the Rockies, engineers faced some of the most formidable construction problems on the line. The government subsidy for this section rose to $48,000 per mile, compared with $16,000 per mile for work across the plains.

Rather than force a direct path through the rock, the engineers wound around natural obstacles. The route required one tunnel, 14,000 feet long, to reach the great basin. From its high point at the Great Salt Lake, the track descended toward Bitter Creek Valley and climbed again to the watershed divide between the Atlantic and Pacific basins. Numerous streams, including Muddy Creek and Green Creek, had to be crossed on culverts. The railway’s passage through the region was thus a negotiated route through terrain, not a straight line imposed upon it.

The Crossing

At Bridger Pass, the train reached the continental watershed at an elevation of 7,524 feet above sea level, one of the highest points attained by the track in crossing the Rocky Mountains. From there, after travelling about 200 miles, the passengers entered the immense plains that stretch toward the Atlantic. The landscape opened onto the headwaters of the North Platte River, while the southern Rocky Mountains formed a vast curved horizon, with Laramie Peak rising above the surrounding country.

At half-past twelve, the travellers caught sight of Fort Halleck, which commanded that section of the route. A few hours later the train had crossed the Rockies. Snow had stopped falling, and the air turned crisp and cold. Birds startled by the locomotive rose in the distance; no wild beasts appeared on the plain. The crossing therefore unfolds as both a measurable railway achievement and a change of setting: high, rugged country gives way to an exposed, spacious plain.

A Vulnerable Route

Clearing the mountains did not make the railway journey secure. After the train had crossed the Rockies, it was stopped by a red signal because the bridge at Medicine Bow was considered too shaky to bear its weight. The suspension bridge, about a mile away over rapids, had several broken iron wires, and the signalman refused to let the train proceed. This later obstruction belongs to the wider passage through the western railway corridor rather than to the mountain crossing itself, but it sharpens the same practical truth: a route made swift by rail remained dependent on the soundness of individual structures.

Narrative Significance

The Rocky Mountains give the railway journey a clear geographic and narrative hinge. The route’s steep climbs, watershed divide, engineered detours, tunnel, and creek crossings make speed a product of substantial material work. Once the train descends onto the plains, the change in terrain brings relief, but the Medicine Bow bridge demonstrates that progress remains vulnerable to failure beyond the mountains. The range consequently embodies the tension between the promise of rapid transcontinental travel and the difficult, uneven infrastructure required to deliver it.