Interstate Highway System - Wikipedia
https://en.m.wikipedia.org/wiki/Interstate_Highway_System
The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, or the Eisenhower Interstate System, is a network of controlled-access highways that forms part of the National Highway System in the United States. The system extends throughout the contiguous United States and has routes in Hawaii, Alaska, and Puerto Rico. In the 20th century, the Formed: June 29, 1956; 67 years ago Interstates: Interstate X (I-X) Length: 48,756 mi (78,465 km)
Formed: June 29, 1956; 67 years ago
Interstates: Interstate X (I-X)
Length: 48,756 mi (78,465 km)
DA: 46 PA: 6 MOZ Rank: 95