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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Postwar Federal-aid projects on Interstate Highway

alt="The map illustrates how designation of the Interstate System has had the desired effect of centering official and public attention on these most important routes of the Nation"

The map illustrates how designation of the Interstate System has had the desired effect of centering official and public attention on these most important routes of the Nation.

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