Lewis and Clark Expedition
Pittsburgh, Allegheny County, Pennsylvania
Marker Inscription
On Aug. 31, 1803, Capt. Meriwether Lewis launched a 50-foot "keeled boat"Β from Ft. Fayette, 100 yards downriver. This marked the beginning of the 3-year expedition commissioned by President Jefferson, which opened America to westward expansion.
Erected by Pennsylvania Historical and Museum Commission
The Story
On August 31, 1803, Meriwether Lewis eased a 50-foot keeled boat into the Ohio River near Fort Fayette, launching the journey that would become the Lewis and Clark Expedition. Commissioned by President Thomas Jefferson to explore the newly acquired lands to the west, the three-year trek pushed all the way to the Pacific and back. Pittsburgh, at the head of the Ohio, was the practical starting line for that continental adventure.
Why it matters
The expedition opened the American imagination β and eventually American settlement β to the vast lands west of the Mississippi, making this quiet riverbank a doorway to the nation's westward story.
The story behind this marker
AI contextThe era
In 1803, the United States was young, ambitious, and suddenly much larger. The Louisiana Purchase had roughly doubled the size of the country, opening vast, largely unmapped lands to the west. President Thomas Jefferson, long fascinated by the American interior, wanted it explored, charted, and understood.
Pittsburgh, at the head of the Ohio River where three waterways meet, was the natural launching point for a westward journey by water. In an age when rivers were the highways of travel and commerce, a boat setting out from here could ride the Ohio toward the Mississippi and the great western country beyond.
So it was that a practical riverbank at the edge of a growing frontier town became the starting line for one of the most famous journeys in American history.
People & events
On August 31, 1803, Captain Meriwether Lewis launched a 50-foot keeled boat into the river near Fort Fayette, just a short distance from this spot. That departure marked the beginning of the expedition Jefferson had commissioned β a three-year undertaking to explore the lands to the west.
Lewis was one of the two leaders history would forever pair together in the expedition's name. His task at the outset was to get the boat and its supplies down the Ohio, gathering men and equipment, and to press onward toward the far frontier. The launch from Pittsburgh was the first physical step of a journey that would ultimately reach the Pacific and return.
What began quietly on this riverbank β a single boat pushing off into the current β grew into an epic of exploration that carried its members across mountains, rivers, and plains few of their countrymen had ever seen.
Its place in the American story
The expedition Jefferson set in motion did more than fill in blank spaces on a map. It captured the American imagination and pointed the young nation's gaze firmly westward, helping to open the door to the westward expansion that would define the century to come.
That expansion is a complicated legacy β it meant opportunity and adventure for some, and profound disruption for the Native nations whose homelands lay in the path of a growing country. But there is no question that the journey launched here became a defining chapter in the story of the United States reaching toward the Pacific.
That such a continental adventure began with a boat sliding into the Ohio at Pittsburgh gives this ordinary stretch of riverbank an outsized place in the national story.
If you visit
Stand near the water and consider that the great western journey did not begin on some distant frontier but right here, at the head of the Ohio in the heart of Pittsburgh. The launch site was about a hundred yards downriver from the old fort β close enough that you can look at the water and picture a long keeled boat easing out into the current.
The setting today is thoroughly urban, and that contrast is the pleasure of the visit: a modern city built around the very rivers that once carried explorers toward the unknown. Watch the Ohio flow west and you're watching the same road that boat took on August 31, 1803.
This is a natural stop for anyone drawn to the Lewis and Clark story or to the age of American exploration. Pittsburgh makes a fitting place to begin your own imagining of the expedition β the true head of the trail, where a continental journey started with a single push from the shore.
Written by AI to add context, grounded in the markerβs inscription and the historical record. The inscription above is the original, unaltered text.
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Related people
- Β· Meriwether Lewis
- Β· Thomas Jefferson
Related events
- Β· Lewis and Clark Expedition
Themes & tags
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