U.S. Federal Innovation 15: Dwight D. Eisenhower National System of Interstate and Defense Highways
I-5 in California
Considered one of the greatest achievements of the Eisenhower administration, the 75,440 km system of interstate highways provides quick and reasonably safe access for tourists and truckers to nearly every region of the United States. As part of the Strategic Highway Network, the interstate system also provides an important defense purpose. Source: Wikipedia.