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Early Republic

Allegheny Portage Railroad Plane No. 2

Portage Township, Cambria County, Pennsylvania

Marker Inscription

From 1834 to 1854 this 36-mile line connected Hollidaysburg to Johnstown. The railroad portaged canal boats over the Allegheny Mountains, which formed a barrier to the Pennsylvania canal system. Horses and mules pulled the first trains. Later steam locomotives were used. At the center of the line, Plane No. 2 served as the railroad headquarters.

Erected by Pennsylvania Historical and Museum Commission

The Story

Before tunnels pierced the Alleghenies, the mountains stood as a wall across Pennsylvania's ambitious canal system. From 1834 to 1854 the Allegheny Portage Railroad solved the problem with a feat of engineering, hauling entire canal boats up and over the ridge along a series of inclined planes on a 36-mile line between Hollidaysburg and Johnstown. Horses and mules pulled the first cars, later giving way to steam locomotives, with Plane No. 2 serving as the line's headquarters.

Why it matters

The portage railroad was a bold early answer to the challenge of crossing the mountains, a key link in the young nation's race to bind East and West with reliable transportation.

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Related events

  • · Allegheny Portage Railroad

Themes & tags

Nearby & related markers

Staple Bend Tunnel

East Taylor Township, PA · est. 1947

The Staple Bend Tunnel, built as part of the Allegheny Portage Railroad, was the first railroad tunnel constructed in the United States. Its finely cut masonry, still intact, was regarded as a remarkable engineering feat in an age when boring through solid rock for a railway was nearly unheard of. Reachable a few miles east via Mineral Point, it endures as a monument to early American ingenuity.

Canal Basin

Hollidaysburg, PA · est. 1982

At Hollidaysburg, the 127-mile Juniata Division of the Pennsylvania Canal met the Allegheny Portage Railroad, an ingenious system that hauled canal boats over the mountains toward Johnstown, 36 miles west. The canal opened in 1832 and the railroad in 1834, together forming a continuous route across the formidable Allegheny barrier. Engineers marveled at the portage line, which climbed nearly 1,400 feet in just ten miles using inclined planes.

Robert E. Peary

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