Historic Columbia River Highway, Troutdale, Multnomah County, OR
Significance: The Historic Columbia River Highway is one of the oldest scenic highways in the United States. It was an early twentieth-century technical and civic achievement, successfully mixing sensitivity t... More
Historic Columbia River Highway, Troutdale, Multnomah County, OR
Significance: The Historic Columbia River Highway is one of the oldest scenic highways in the United States. It was an early twentieth-century technical and civic achievement, successfully mixing sensitivity t... More
Eighteenth Street Bridge, Saint Louis, Independent City, MO
Significance: The Eighteenth Street Bridge is a 1,054-foot-long through-truss and through-plate girder structure with distinctive ornamentation over each truss portal in the form of finials and cresting, and pe... More
Mountain Dell Dam, Parley's Canyon, Northwest side of I-80, West of St...
Significance: Mountain Dell Dam is an early application of multiple-arch reinforced-concrete construction to dam engineering. The design developed by John S. Eastwood consisted of a series of arches set at an a... More
Delaware & Raritan Canal, Lock, On Delaware Canal, North of Hamilton, ...
Significance: Lock 13 was one of 14 locks in a canal totaling 65.5 miles in length, connecting the Raritan River at New Brunswick, New Jersey, to the Delaware River at Bordentown and at Raven Rock, New Jersey, ... More
Union Elevated Railroad, Union Loop, Wells, Van Buren, Lake Streets & ...
Significance: Significant in the history of American industrial archaeology, the Union Elevated Railroad is also important for its association with financier and traction magnate, Charles T. Yerkes and for its ... More
Northeast Railroad Corridor, Amtrak route between CT & MA state lines,...
Survey number: HAER RI-19 Public domain photograph - historical image of Connecticut, United States, free to use, no copyright restrictions image - Picryl description Public domain photograph - historical im... More
Northeast Railroad Corridor, Amtrak Route between New York/Connecticut...
Survey number: HAER CT-11 Public domain photograph - city, downtown, New York, United States, free to use, no copyright restrictions image - Picryl description