One of the earliest and most impressive of America's great railroad engineering feats, the Horseshoe Curve was built as a means of overcoming a straight-line grade over the geological feature known as the Allegheny Escarpment or Allegheny front, which separates the ridge-and-valley section of Pennsylvania (on the east) from the Allegheny Front (on the west). Such a straight-line route would have made commercial railroad operations unfeasible from both and economic and technical standpoint.
Horseshoe
![Horseshoe Curve](/sites/default/files/styles/landmark_node_/public/Horseshoe_Curve.jpg?itok=IRMMdqua)
Innovations
![Horseshoe Curve](/sites/default/files/styles/thumbnail/public/Horseshoe_Curve.jpg?itok=ywG8_aFe)
One of the earliest and most impressive of America's great railroad engineering feats, the Horseshoe Curve was built as a means of overcoming a straight-line grade over the geological feature known as the Allegheny Escarpment or Allegheny front, which separates the ridge-and-valley section of…
Read More