The Road Bridger Dared:

How One Trail Skirted a War and Opened Montana's Gold Country

INTRODUCTION

In the spring of 1864, as the nation tore itself apart over slavery and union, a different kind of urgency gripped the northern plains. Word of gold at Alder Gulch, discovered the year before in what would become southwestern Montana, had reached the outside world, and thousands of prospectors and emigrants were determined to get there by the fastest, safest means possible. Gold and silver had been discovered the year before at Alder Gulch near Virginia City in what's now southwestern Montana, and a new gold rush was on. The obvious route, blazed the previous year by John Bozeman and John Jacobs, ran directly through the Powder River Basin east of the Bighorn Mountains, territory that belonged, by treaty, to the Lakota Sioux, Northern Cheyenne, and Northern Arapaho. Into this tension stepped Jim Bridger, the aging but still formidable mountain man, who in 1864 marked out an alternative path west of the Bighorns. That path came to be called the Bridger Trail. It was used hard for only a single season, yet it left a permanent mark on the settlement of the Bighorn Basin and stands as a clear illustration of how geography, treaty politics, and one man's decades of accumulated knowledge could intersect at a single moment in the history of the West.

A CONTESTED LANDSCAPE

The Bozeman Trail's danger was not incidental; it was the direct result of an 1851 treaty. Plains Indian tribes had been promised the rich hunting grounds of the Powder River Basin under the terms of the 1851 Treaty of Fort Laramie. By 1864, emigrant traffic pouring into that country provoked the tribes to resist. These attacks by the Lakota Sioux and their allies, the Northern Cheyenne and Northern Arapaho, became known as Red Cloud's War, a campaign to force Euro-Americans and the U.S. Army out of the Powder River country. The tribes' efforts resulted in the closure of the Bozeman Trail and abandonment of new forts there as part of a new Fort Laramie Treaty in 1868. Colonel William O. Collins, commanding at Fort Laramie, understood the danger building around him. On April 26, 1864, he telegraphed his superiors with a warning that reads, even at this distance, as remarkably clear-eyed: he reported that immigration was arriving rapidly, that a large party intended to cut a new route from the Platte to the mines by crossing the Bighorn and Yellowstone rivers, and that the country, though promising, would require a strong military presence to keep it from what he called running wild and making trouble.

THE MAKING OF A GUIDE

Jim Bridger was, by 1864, no newcomer to this country. In 1822, at 17, Bridger enlisted in the Ashley-Henry expedition sent from St. Louis to trap beaver in the Rocky Mountains. He worked first as an employee and later became a partner in the famous Rocky Mountain Fur Company. He had co-founded Fort Bridger with Louis Vasquez in 1843 as a supply post for Oregon-bound emigrants, and through the 1850s the Army had repeatedly called on him to guide expeditions across terrain few white men had seen. Most relevant to the events of 1864 was his role in the 1859 Raynolds Expedition. In 1859, Capt. William Raynolds of the U.S. Army Corps of Topographical Engineers was ordered to locate four possible wagon routes through what are now northern Wyoming and southern Montana. The expedition was instructed to separate into two groups, with one exploring the upper reaches of the Bighorn River while the other explored the upper Yellowstone River valley. Bridger led the main party, and although a companion officer, Lieutenant Henry Maynadier, later explored a portion of the upper Bighorn on a separate leg of the expedition, historian James A. Lowe has argued that credit for the 1864 route belongs to Bridger rather than Maynadier. Maynadier's exploration along the upper Bighorn River through the Bighorn Basin provided the basis for future historians to claim that he was responsible for the location of the Bridger Trail route used by Bridger in 1864. Maynadier, however, had never been in the country before, and his guide was not nearly as experienced as Bridger. His course differed considerably from the trail blazed by Bridger four years later. That distinction matters, because it underscores that the 1864 trail was not simply an existing path Bridger happened to walk, but a route he selected from memory, drawing on genuine, lived familiarity with the ground.

BLAZING THE TRAIL, 1864

Collins released Bridger from his post-scout duties at Fort Laramie on April 30, 1864, so that Bridger could guide the season's first emigrant train north. In 1864, however, he spent the season guiding emigrant trains to Montana Territory, after obtaining a leave of absence from the fort on April 30. An emigrant party had already left Denver around May 1, bound for Fort Laramie and, from there, the gold fields. Bridger himself departed Fort Laramie on May 20, heading west along the North Platte River toward the point, near present-day Casper, Wyoming, where his new route would leave the established Oregon Trail. He left Fort Laramie on May 20 and headed west up the North Platte River for the 10-day, 140-mile trek to the Bridger Cutoff west of Red Buttes.

From Red Buttes, the trail struck northwest. Heading in an overall northwestern direction, the trail skirted the southern end of the Bighorn Mountains, crossed Badwater Creek, and then proceeded up Bridger Creek, passing over what today are known as the Bridger Mountains. The trail descended the northern slope of the mountains via the Kirby Creek drainage to the Bighorn River in the southern Bighorn Basin. It crossed the Bighorn near present-day Lucerne, Wyoming, then ran north along the river's west bank, fording the Greybull and Shoshone rivers before nearing the Montana line close to present-day Frannie, Wyoming. Physical traces of this stretch survive: emigrant names carved into a sandstone cliff along Bridger Creek, corroborated by an early twentieth-century land survey and documented photographically in 1966 and again in 1996. Just east of Bridger Creek emigrant names are incised on a sandstone cliff face located east of the ranch house on Herold Day's Bow and Arrow Ranch. The full route from Red Buttes to Virginia City ran roughly 510 miles, a distance a well-organized train might cover in about thirty-four days; Bridger's train, leading the way and taking extra time for road work, traveled the route in about 50 days.

FIVE TRAINS, ONE SEASON

The Bridger Trail never became a thoroughfare. Only five wagon trains took the new route: north through the Bighorn Basin to the Yellowstone Valley, west and over a divide into the Gallatin and Madison valleys and finally back south up the Madison to the gold fields near present Virginia City, Mont. Several travelers kept diaries that let historians reconstruct the pace and character of the trip. Howard Stanfield, traveling with John Jacobs's train ten days behind Bridger, left Red Buttes on May 30 and reached Virginia City forty-two days later, on July 10, after numerous layovers, some devoted to prospecting along the way. Cornelius Hedges, a Yale- and Harvard-trained lawyer from Iowa who would go on to become one of Montana Territory's most prominent early citizens, left Red Buttes on June 4 and arrived in Virginia City on July 10, a thirty-seven-day trip. The Montana Historical Society's collection of Hedges family papers preserves his diary of the crossing, though the archive's own biographical summary elsewhere describes him as having set out from Iowa on foot in April 1864 and reaching Virginia City on July 12, a discrepancy of two days from the SHPO's account that likely reflects differing methods of counting the journey's start and endpoint rather than any real contradiction. The second part of the diary describes his experiences working in the gold mines upon his arrival in Virginia City in July 1864. Other parties moved faster still: James Roberts and Robert Vaughn, guided by Joseph Knight, left Red Buttes on June 10 and reached Virginia City in just thirty-four days, the fastest crossing recorded on the trail, while Charles Baker's train, departing June 22, and fellow traveler William Atchison both arrived in late July after thirty-seven days on the road.

INTO MONTANA AND ON TO VIRGINIA CITY

Once across the Montana line, the trail ran north to the Clarks Fork of the Yellowstone River, then downstream past the site of present-day Bridger, Montana, to a point near Rock Creek where it merged with the Bozeman Trail. Once in Montana, the trail proceeded north to Clarks Fork of the Yellowstone River, continued downstream past present-day Bridger, Montana, to the vicinity of Rock Creek where the Bozeman Trail joined Bridger's trail. From this point the two routes continued west as the Bridger Trail south of the Yellowstone River. The combined route crossed the Yellowstone east of Livingston, then split briefly as each guide favored a slightly different crossing of the mountains near present-day Bozeman Pass before reuniting at the new settlement of Bozeman. From there travelers pushed west across the Gallatin River to the Madison, then turned south upstream to Virginia City itself, the raucous, muddy boomtown that was by then the effective capital of the new gold country.

A ROAD SUPERSEDED, A LEGACY THAT REMAINS

The Bridger Trail's moment as an emigrant highway passed almost as quickly as it arrived. Yet its influence did not end in 1864. Decades later, sections of the route were absorbed into a working freight network. Three decades later, in the 1880s and 1890s, the main Bridger Trail route served as the trunk line for a freighting network of wagon roads that connected remote ranches in the Lost Cabin area with Casper to the east and the Bighorn Basin to the north. This way also provided rural communities in the Bighorn Basin access to markets via the railhead in Billings, Mont., helping sustain the emerging economies of those towns into the 20th century. Rail eventually caught up with the country the trail had opened. The Chicago, Burlington and Quincy Railroad was built into the north end of the Bighorn Basin by 1901, but freight wagons continued to transport a variety of merchandise to and from the railheads along portions of the old Bridger Trail prior to the advent motor vehicles. Roads following the trail remained the principal route into the Bighorn Basin from the south until the railroad was completed through Wind River Canyon in 1913. Today, two segments of the route, known formally as the Bridger Immigrant Road, are listed on the National Register of Historic Places, a designation reserved for places judged to hold enduring historical significance rather than mere antiquarian interest.

CONCLUSION

The Bridger Trail's importance does not rest on the volume of traffic it carried. Measured strictly by wagon counts, it was a minor footnote beside the Oregon and Bozeman trails. What makes it worth remembering is what it reveals: a treaty broken by the pressure of gold, a colonel candid enough to warn his superiors that emigration could not be controlled, and an aging guide who chose caution over the shortest line on the map, drawing on forty years of accumulated knowledge of a landscape most Americans had never seen. Roughly one in four residents of Virginia City in 1864 is estimated, in at least one account, to have arrived by this route, though this figure appears in only a single source and should be treated as an informed estimate rather than a settled count. Whatever the precise number, those who did travel it, men like Cornelius Hedges, went on to help build the institutions of a new territory. The trail itself, meanwhile, settled quietly into the freight roads and, later, the highways that still trace its course through the Bighorn Basin today.

WORKS CITED

Lowe, James A. "The Bridger Trail: A Safer Route to Montana Gold." WyoHistory.org, Wyoming State Historical Society, 18 Nov. 2014, www.wyohistory.org/encyclopedia/bridger-trail. Accessed 27 July 2026.

Lowe, James A. "A Map of the West in His Head: Jim Bridger, Guide to Plains and Mountains." WyoHistory.org, Wyoming State Historical Society, 16 Nov. 2014, www.wyohistory.org/encyclopedia/jim-bridger. Accessed 27 July 2026.

Lowe, James A. The Bridger Trail: A Viable Alternative to the Gold Fields of Montana Territory in 1864, with Excerpts from Emigrant Diaries, Letters, and Comparative Material from Oregon and Bozeman Trail Diaries. Arthur H. Clark Co., 1999.

Wyoming State Historic Preservation Office. "The Bridger Trail: The Route." wyoshpo.wyo.gov/btrail/theroute.html. Accessed 27 July 2026.

Wyoming State Historic Preservation Office. "The Bridger Trail: Bridger Creek." wyoshpo.wyo.gov/btrail/bridgercreek.html. Accessed 27 July 2026.

Montana Historical Society Research Center. "Cornelius Hedges Papers, 1864-1865." Archives West, archiveswest.orbiscascade.org/ark:/80444/xv32151. Accessed 27 July 2026.