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THE HISTORICAL
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“Bite-Size Bits of Local, National, and Global History”
Mammoth in Mammoth Hot Springs in Park County, Wyoming — The American West (Mountains)
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Road Builders

 
 
Road Builders Marker image. Click for full size.
Photographed by Rich Pfingsten, March 23, 2009
1. Road Builders Marker
Inscription. In 1878 civilian Superintendent Philetus Norris began cutting crude wagon paths to Yellowstone's major features. However, better roads were needed, and from 1883 to 1918 the U.S. Army's Corps of Engineers built and maintained Yellowstone's roads and bridges. When they left the park in 1918, the Corps had constructed over 400 miles of road and created the first road system of any size constructed according to uniform specifications. For its time, it was a unique and inspiring model.

The Corps also improved life at Fort Yellowstone by constructing a hydroelectric power plant, which provided electricity for the Fort's buildings, and developing a water system. Other contributions included landscaping, and installing street lights and concrete sidewalks.

This building was constructed in 1903 and served as the headquarters for the Corps of Engineers until 1918.

Inset photo captions: 1) Steam Roller purchased by the Corps in 1916, 2) Rangers in front of the U.S. Army Corps of Engineer's building (1929). Many of the first employees of the National Park Service were hired from the ranks of Fort Yellowstone troopers.
 
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Topics. This historical marker is listed in these topic lists: MilitaryRoads & Vehicles. A significant historical year for this entry is 1878.
 
Location. This marker has been replaced by another marker nearby. It was located near 44° 58.613′ N, 110° 42.025′ W. Marker was in Mammoth Hot Springs, Wyoming, in Park County. It was in Mammoth. It was on North Entrance Road 0 miles east of Grand Loop Road, on the right when traveling west. Touch for map. Marker was in this post office area: Yellowstone National Park WY 82190, United States of America. Touch for directions.

Regionally, this marker was in the Bighorn Basin and in Greater Yellowstone. It was also in the American Mountain West and in the Lewis & Clark Corridor. Globally, it was in North America, the Rocky Mountains, the Western Hemisphere, the Western World, and the Anglosphere.

Other nearby markers. At least 8 other markers are within walking distance of this location: A different marker also named Road Builders (here, next to this marker); Elk Rut (within shouting distance of this marker); The Parade Ground (within shouting distance of this
Road Builders Marker with Engineer's Office Building in the background image. Click for full size.
Photographed by Rich Pfingsten, March 23, 2009
2. Road Builders Marker with Engineer's Office Building in the background
marker); Fort Yellowstone (within shouting distance of this marker); Fort Yellowstone     National Historic Landmark (within shouting distance of this marker); a different marker also named From Soldier to Ranger (about 400 feet away); Life in the Fort (about 500 feet away); The Post Exchange (about 700 feet away). Touch for a list and map of all markers in Mammoth Hot Springs.
 
Other markers no longer nearby. Welcome to Historic Fort Yellowstone (was about 300 feet away, measured in a direct line but has been permanently removed); From Soldier to Ranger (was about 400 feet away but has been permanently removed); The Drill Field (was about 500 feet away but has been permanently removed); A Good Duty Station (was about 600 feet away but has been permanently removed).
 
More about this marker. This marker has been removed and replaced with a new marker nearby called Road Builders.
 
United States Engineer Office image. Click for full size.
Photographed by Rich Pfingsten, March 23, 2009
3. United States Engineer Office
 
 
Credits. This page was last revised on November 5, 2024. It was originally submitted on February 28, 2011, by Rich Pfingsten of Forest Hill, Maryland. This page has been viewed 1,120 times since then and 23 times this year. Last updated on September 11, 2018, by Craig Baker of Sylmar, California. Photos:   1, 2, 3. submitted on February 28, 2011, by Rich Pfingsten of Forest Hill, Maryland. • Bill Pfingsten was the editor who published this page.
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Jul. 10, 2026