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Sandstone Ashlars Used to Form an Arch in a Bridge

Sandstone Ashlars Used to Form an Arch in a Bridge

These rectangular, cut stones are ashlars, and they are joined with mortar. These appear to be some of the stones used for the arch section of Skew Arch Bridge. The bridge is listed on the National Register of Historic Places, as part of the Allegheny Portage Railroad National Historic Site.
Galleries: Allegheny Portage Railroad, Arch Bridges
Keywords: allegheny portage railroad, arch bridge, bridge, cut stones, gallitzin, mortared joints, pennsylvania, skew arch bridge
Photo Location: Skew Arch Bridge, Allegheny Portage Railroad National Historic Site, Pennsylvania
Photographer: Dr. Roy Winkelman
Date of Photo: 11/25/2011
Device Make: Canon
Device Model: Canon EOS 5D Mark II
Original Dimensions: 5616×3744
Picture Orientation: Landscape
GPS Coordinates: 40°27'11.00"N 78°32'34.23"W
Picture Number: 15931