Interstate System Simplified
The U.S. Interstate System has been called the greatest public works project in history. From the day President Dwight D. Eisenhower signed the Federal-Aid Highway Act of 1956, the Interstate System has been an integral part of the American way of life. As of 2004, the Interstate System had 46,837 miles of highway.
East–west highways are assigned even numbers, and north–south highways are assigned odd numbers. Even-numbered routes increase from south to north, and odd route numbers increase from west to east, though there are exceptions to both principles in several locations. Interstate numbers divisible by 5 are intended to be major arteries among the primary routes, carrying traffic long distances. This can get a bit complicated, so now there is a terrific new map that simplifies the tangle of interstate highways in an easy-to-understand grid.
Leave a Reply