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US routes are mirrored -- US 1/2 in the Northeast and US101/(Defunct)80 in California, with US 90 ending in Texas. The 3 digit routes -- except 101, because the
by Sanddancer 10y ago
US routes are mirrored -- US 1/2 in the Northeast and US101/(Defunct)80 in California, with US 90 ending in Texas. The 3 digit routes -- except 101, because the Federal Highway System had a lot more exceptions -- tended to be more tenuously associated with their "parent" route.
- flyinghamster 10y agoUS 101 isn't the only exception to the US route numbering ssystem. US 400 isn't a branch of any other US highway (not to mention there's no US 0), US 412 is not a branch of US 12, and US 425 is not a branch of US 25.