Fort Clay, also known as Camp Davis, was established in 1855 to protect the Reshaw Bridge traffic in present-day Evansville, Wyoming (a suburb of Casper).

For years, emigrants along the California–Oregon and Mormon Trails had crossed the Platte River from the South side to the North side at various points. One of the most popular crossings was located just East of modern-day Casper, Wyoming, at Old Indian Ford.

In 1847, Mormon church leader Brigham Young commissioned a ferry at the site where Fort Caspar would later be built. The ferry, which took about five minutes to cross the river, was free for church members, but non-members had to pay. In 1849, the Mormons moved the ferry a few miles East, where they also operated a store where trail travelers could buy supplies. That year saw the highest trail traffic due to the California Gold Rush.

Not everyone could afford the Mormon Ferry, and many couldn’t cross the Platte River at Old Indian Ford, which later became known as the California Crossing.

In the fall of 1852, French trader John Baptiste Richard established a trading post several miles downriver of the crossing. Taking advantage of the traffic along the trails, began to build a bridge a little bit East of the Mormon Ferry. In partnership with Joseph Bissonette, Seth Ward, William Guerrier, Charles Bordeaux, Louis Guinard, and William Kenceleur, it was the first successful bridge to span the North Platte River. The bridge opened in 1853, and that year traffic along the trails peaked, with some 50,000 emigrants using it. At first, the bridge was known as the Platte Bridge. But because John Richard spoke with a thick French accent, most travelers mispronounced his name, thinking it was Reshaw. As a result, the bridge became widely known as Reshaw’s Bridge. Richard’s bridge put the Mormon Ferry out of business.

The U.S. Army established its first presence in the area in 1855 by erecting Fort Clay, an outpost of Fort Laramie, near Richard’s trading post. Lieutenant Deschler and members of the 6th Infantry, 10th Infantry, and 4th Artillery staffed Fort Clay in November 1855. The soldiers were tasked with protecting the bridge from Indian attacks. By the next year, the military unit had grown to a full company with three officers and a bugler. In February 1856, the post was renamed Camp Davis in honor of Jefferson Davis, then Secretary of War under President Franklin Pierce and later president of the Confederacy. But by November 1856, the army had abandoned Camp Davis.

However, two years later, when the army needed to maintain a route to supply troops involved in the Mormon War, soldiers were again stationed there in July 1858. It was established by Captain Joseph Roberts of the 4th Artillery and called Camp Payne. This post, too, was short-lived and closed in May 1859.

That same year, Richard’s old partner, Louis Guinard, began building a newer, better bridge at the old Mormon Ferry crossing site. Completed in spring 1860, Guinard’s bridge and the trading post became the site of a Pony Express Station and, later, an Overland Mail Company stop. When the transcontinental telegraph line went through the area in 1861, it crossed the North Platte River on Guinard’s bridge, and his trading post now included a Pacific Telegraph Company Office.

At the time, Guinard’s Bridge was called the Upper Platte Bridge, and Richard’s was called the Lower Platte Bridge. Though Richard’s bridge suffered from competition, he diversified his interests and continued to work in the fur trade. However, with the constant threat of native hostilities and after Louis Guinard lost his son in an Indian attack, he sold the bridge to Richard by 1864.

Meanwhile, U.S. troops occupied Guinard’s buildings for three years during the Civil War and called the site Platte Bridge Station. The soldiers protected emigrants along the trails and the newly established telegraph lines against raids from the Lakota and Cheyenne tribes.

By 1865, amid increased native hostilities and legal problems with the United States military, Richard sold his post and bridges to the military. He and his family then moved to Rock Creek on the new Overland Trail, which carried most of the transcontinental traffic.

He was gone before the Battle of Platte Bridge occurred on July 26, 1865, between soldiers and the Indians. In the battle, the Reshaw Bridge was partially burned. Soon afterward, Fort Caspar was established at the site of Platte Bridge Station. During the severe Winter of 1866-1867, soldiers at the fort dismantled Richard’s Bridge and many nearby buildings for firewood and building materials. Fort Caspar was abandoned in 1867, and almost immediately after the troops were gone, the Indians burned the buildings and the remaining bridge.

Reshaw’s Bridge, reconstructed today, is at Reshaw Park in Evansville, Wyoming.

 

©Kathy Alexander/Legends of America, updated October 2026.

Also See:

Explorers, Traders & Trappers

Jean “John” Baptiste Richard – Trader and Entrepreneur

Forts of Wyoming

Forts Across America

Wyoming Main Page

Sources:

Fifer, Barbara; Wyoming’s Historic Forts, Farcountry Press, 2003.
Trading Posts of Wyoming National Register Nomination
Wikipedia
Wyoming History