The railroad functioned using a gravity-defying system of ten inclined planes, five on each side of the mountain.
The Skew Arch Bridge is one of the earliest examples of a stone bridge built at an angle to the road it spans in North America.
The journey over the 36-mile portage originally took approximately 12 to 15 hours to complete.
Canal boats were built in sections so they could be dismantled and loaded onto railroad flatcars for the transit.
The 1,800-foot-long Staple Bend Tunnel, located nearby, was the first railroad tunnel constructed in the United States.
Hemp ropes used to pull the cars were up to 7 inches in circumference and stretched significantly during use.
The Lemon House, a historic tavern on-site, provided lodging and meals for travelers waiting to cross the mountains.
Allegheny Portage Railroad National Historic Site preserves the remains of the first railroad built across the Allegheny Mountains, which bridged the canal system between Philadelphia and Pittsburgh in 1834. The site features the restored Lemon House tavern, the Skew Arch Bridge, and several miles of trails along the historic incline route. This engineering feat utilized a series of ten stationary steam engines and hemp ropes to pull canal boats and railcars over the mountain summit. Visitors can view a full-scale replica of a locomotive and stationary engine at the Visitor Center. The grounds encompass remnants of the original stone sleepers that once supported the iron rails. It served as a critical transportation link for emigrants and freight heading west before the Pennsylvania Railroad eventually rendered it obsolete. The site is maintained by the National Park Service as a vital chapter in American industrial evolution.
The restored Skew Arch Bridge, which highlights the precise stone masonry of the 1830s.
Wear sturdy walking shoes to navigate the uneven gravel surfaces on the historical trails.
Bring binoculars, as the elevated mountain location offers excellent opportunities for birdwatching.
Combine your visit with a trip to the nearby Johnstown Flood National Memorial to experience more regional history.
Attempting to walk the full length of the historic incline without water or proper gear, as the terrain is steeper than it appears.
The visitor center and certain historic buildings may have reduced hours or closures during winter months; always verify before visiting.
Stay on marked trails to protect the fragile archaeological remains of the railroad bed.
