* 1956-largest public works project in the United States history
* Eisenhower signed the law
* built over 40,000 miles of highways in the United States at a cost of $25 billion
* created the interstate highway system
* ostensibly to create routes for moving military supplies and for emergency evacuation in case of nuclear attack.
* highway system made coast-to-coast driving a more common occurrence, and car-oriented vacations became a reality
* growth of interstate highways allowed for a demographic shift as people vacationed, visited, and moved to areas in the south and southwest—
* SUNBELT from Florida through the deep South, all the way through Texas, New Mexico, and Arizona.