The second-tallest railway bridge in the United States is the New River Cantilever Truss Bridge located near the communities of New River and Helenwood, Tennessee. Opened on July 10th, 1963 by the Southern Railway, this massive structure stands 307'5" high with a span of 1,622ft over its namesake waterway. The bridge is located on Norfolk Southern's CNO&TP line which runs between Cincinnati, Ohio, and Chattanooga, Tennessee. The railroad itself is owned by the City of Cincinnati via the Cincinnati Southern Railway. High Bridge of Kentucky, also located on the CNO&TP line in Wilmore, is technically the tallest in the United States by only 7 inches. There are other bridges that are higher but they are supported by canyon walls as opposed to the structures themselves.

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