 A second federal highway, U.S. Highway 275, received its designation in 1939; it follows the Elkhorn valley upstream from Omaha through Norfolk to O'Neill.During World War II, the segment from Norfolk to O'Neill was a portion of the Strategic Network of Highways; as such, it was given a high priority for federal funds for materials and for federal maintenance funds.Air travel developed in Norfolk beginning with the establishment of a flying school in 1928.