Gordon,
I understand that I-4 goes north, but technically speaking it is I-4 East or I-4 West. Whatever the Federal agency is that handles Highways says an even number highway runs east/west and an odd number runs north/south. Couldn't you use that argument?
Nope
You know what got me for the longest time until they finally changed the signs? Traveling on I-275 toward Dale Mabry, the signs only read 92 East and 92 West. Um, Dale Mabry runs North/South. I don't know of it ever running east/west. I noticed the signs now read 92 East/West (Northbound or Southbound). Must have confused a lot of people.
Scott