It's a steel truss bridge, meaning it has a boxy steel frame.

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Daniel Garber employs broken Impressionist brushstrokes in "The Bridge at New Hope" (1952), its steel-truss span evoking the serene industrial views of Charles Sheeler and the American Precisionists.

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From the truss bridges of the 1800s to patented designs such as the Golden Gate in 1936, bridge design has led to patents and new technologies.

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