In 1859, Louis
Guinard built a bridge and trading post at the site of today’s Fort Caspar.
post served as an overnight stage stop, Pony Express mail stop and telegraph
office. Two years later, a volunteer cavalry company was ordered to Guinard’s
Bridge to guard against the increasingly frequent Indian Raids. Between
1862 and 1865, this outpost, known as Platte Bridge Station, was outfitted
as a one-company military post.
Sioux and Cheyenne
warriors, including Red Cloud, Old Man Afraid of His Horses, Roman Nose,
Dull Knife, and White Bull, decided to eliminate Platte Bridge Station
in July 1865.
Shortly after this battle, the Army officially named the outpost Fort Caspar, in honor of the fallen lieutenant. The fort, abandoned in 1867, was reconstructed on the original site in 1936 using sketches made by Caspar Collins in 1863.
Located on the west side of Casper, just off Mills Spur Road (Wyoming Boulevard). Visitors arriving from I-25 should take the Poplar Street exit. Fort Caspar is ½ mile north of Wyoming Route 220 and ½ mile south of US 20-26. Signs exist on both routes directing you to the site.
Service Comprehensive Management Plan
The site is listed on the National Register.