Interstate Highway System

The Interstate Highway System is a network of controlled-access highways in the United States, established by the Federal-Aid Highway Act of 1956. Its main purpose is to connect major cities, improve transportation efficiency, facilitate commerce, and enhance national defense. The system features wide lanes, limited access points, and uniform signage, making travel safer and faster. It spans over 46,000 miles and plays a vital role in the country’s economy and daily commuting, enabling smooth travel for both people and goods across state lines.