You are here

Delaware Aqueduct, Delaware and Hudson Canal

-A A +A
1847–1848, John A. Roebling. Off PA 590, across the Delaware River
  • (Stephanie M. Dedovitch)
  • (Stephanie M. Dedovitch)
  • (© George E. Thomas)

The Delaware Aqueduct was a refinement of the Delaware and Hudson Canal of a generation earlier. That canal had provided a oneway navigation (like Josiah White's on the upper Lehigh River in Stoddartsville; see MN11) for barges to carry anthracite from the Lackawanna coal district at Honesdale in Wayne County to New York City. Canal boats crossed the Delaware in a slackwater created by a dam that disrupted the downriver course of lumber and other products. By the 1840s despite multiple enlargements, the canal had reached the limits of its expansion because of the difficulty of crossing the Delaware River and the simultaneous interference with the downriver traffic. Roebling solved the problem with a water-filled canal carried on massive stone piers joined by suspension cables carrying the waterway and a towpath alongside. When the canal was finally abandoned in 1898, the aqueduct was converted to a private toll bridge.

In 1980 it was acquired by the National Park Service as a part of the Upper Delaware Scenic and Recreational River. Remarkably the original 8.5-inch-diameter cables, composed of 2,150 wires bunched in seven strands, wirewound for protection, and spun on-site under Roebling's direction, are still viable and carry the bridge across the river. The decking was restored by the National Park Service in 1986 and the wood icebreakers and towpaths were reconstructed in 1995. Pedestrians can now cross what was once a watery highway above the Delaware.

Writing Credits

George E. Thomas


What's Nearby


George E. Thomas, "Delaware Aqueduct, Delaware and Hudson Canal", [Barryville, New York], SAH Archipedia, eds. Gabrielle Esperdy and Karen Kingsley, Charlottesville: UVaP, 2012—,

Print Source

Cover: Buildings of PA vol 2

Buildings of Pennsylvania: Philadelphia and Eastern Pennsylvania, George E. Thomas, with Patricia Likos Ricci, Richard J. Webster, Lawrence M. Newman, Robert Janosov, and Bruce Thomas. Charlottesville: University of Virginia Press, 2012, 529-529.

If SAH Archipedia has been useful to you, please consider supporting it.

SAH Archipedia tells the story of the United States through its buildings, landscapes, and cities. This freely available resource empowers the public with authoritative knowledge that deepens their understanding and appreciation of the built environment. But the Society of Architectural Historians, which created SAH Archipedia with University of Virginia Press, needs your support to maintain the high-caliber research, writing, photography, cartography, editing, design, and programming that make SAH Archipedia a trusted online resource available to all who value the history of place, heritage tourism, and learning.