Interstate Highway System Law and Legal Definition

The interstate highway system also known as the Dwight D. Eisenhower National System of Interstate and Defense Highways is a network of freeways or expressways in the United States. It is named for President Dwight D. Eisenhower, who championed its formation. The interstate highway system is a subsystem of the national highway system. The interstate highway system is considered as the worlds largest public works project. The interstate highway system is funded by the federal government. It serves nearly all major U.S. cities, with many Interstates passing through downtown areas.