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This is increasingly how exits are numbered on highways in the USA Interstate system. So exit 52 is about 52 miles from the start of the highway or the state bo
by nerdponx 3y ago
This is increasingly how exits are numbered on highways in the USA Interstate system. So exit 52 is about 52 miles from the start of the highway or the state border. It works well because exits are rarely spaced close together. And if they do need to put exits close together, usually they letter suffixes like 52A.
- mauvehaus 3y agoHere in Vermont, we're half-assing that conversion: the canonical exit number is sequential, but below the sign at the exit you have something like "Milepoint Exit 38". It drives me nuts. Another truly perverse thing is that if you're on I-91, the exits for I-89 have numbers (10 A and B). On the other hand, if you're on I-89, there are no exit numbers for the I-91 exits. What? How?!
- eep_social 3y agoIIRC I89 exits are numbered starting from 1 at the border with NH which happens to be just east of that interchange. Maybe adding a number for I91 would have forced them to renumber every other exit across the state and someone decided (for better or worse) to skip that? It’s not as if the I89 exit numbers would line up with the I91 ones anyway, that would be even less sensible.
- mauvehaus 3y agoYou do recall correctly and it seems like this would be yet another excellent reason to just renumber all of the exits by mileage. Wikipedia doesn't quite answer the question of which road was built first where they meet.