The U.S. Interstate System has been in place since 1959 when it first began creating highways to serve multiple states and aid in commerce. Not only did interstate highways ease the transport of goods across state lines but they could also be used in emergency situations such as a quick troop deployment. Just how far did these highways stretch? Some span the entire length or height of the country and are considered to be major coast-to-coast or border-to-border interstate highways. The easiest way to determine if you’re on one of these major highways is to look at its number.
The interstates were numbered depending on which area of the country it’s in, with the major country-spanning interstates all divisible by 5. Lower number highways are in the South and higher in the north, while odd-numbered ones run South to North and even-numbered run West to East. Which interstate highway is the longest in the country? Check out this infographic from Alan’s Factory Outlet to learn more about them!