The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly called the Interstate Highway System (or simply, the Interstate System), is a network of limited-access highways that is named for President Dwight D. Eisenhower, who championed its creation. The entire system, has a total length of 46876 mi,; making it both the largest highway system in the world and the largest public works project in history. The Interstate Highway System is a subsystem of the US National Highway System.