Believe it or not, highway numbers actually make sense. Here's the logic behind odd and even routes, and why the system isn't ...

Praised as one of the greatest public works project in American history, the Interstate Highway System is about to turn 70. Love them or hate them. The interstate highways are the arteries of our ...

The interstate system was created in 1956. From there a map of routes extended across the country was created and constructed ...

There are a number of different road designations in the United States, from highways and freeways to interstates and routes, and it can cause some confusion with different laws and regulations.

When the Interstate system was first introduced in 1956, the population was more centered in the eastern part of the country.