I had assumed all the interstates had changed exit numbers to match miles markers decades ago. But I'm in Vermont and for I89, they still have sequential exit numbers (14, 15, 16) instead of basing it on the closest mile maker (88, 90, 92). There are added signs at the bottom showing the mile marker. Sample pic from Google street view...
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So, my question, in your AREA, are the exit numbers sequential or based on mile marker?