Is There a Specific Numbering for the Bigger Interstates?

There's actually a logic to the numbers of them, like the names of them. The one furthest north, is the highest. And then the big north south interstates are two digit numbers ending in five. So 95 is the furthest east. As you go west, you get 85, 75, 65, and that udes just five. It was just all about your numbers.