In this episode we explore the Allegheny Portage Railroad National Historical site at the summit of the Allegheny Mountains in south-central Pennsylvania. We walk through the visitor center, with commentary, then take a short walk to the outdoor exhibits at the summit of the eastern series of inclined planes that lifted people and cargo from the canal to the top of the mountain. We conclude with a stop at a civil engineering landmark, the stone skewed arch bridge that once carried the old highway over the incline.
5 окт 2024
