Olin Lathrop wrote:
> Marcel Birthelmer wrote:
>   
>> On the other hand, things like
>> interstate 101 (which runs from LA or something up into oregon or
>> something)
>>     
>
> All interstates that go long distances have 2 digit numbers.  Three digit
> numbers means a ring road if the hundreds digit is even, and a spur if the
> hundreds digit is odd.  In either case the two low digits refer to the
> "parent" interstate that the spur or ring is supposed to be an offshoot
> from.  Therefore interstate 101 being 1000 miles long from southern CA to
> Oregon is rather unlikely.
>
> If I vaguely remember right, 101 is a CA road that runs along the coast,
> also called the "Pacific Coast Highway" and even "PCH" in places.  I'm sure
> the locals will correct me if I'm wrong.
>
>
> ******************************************************************
> Embed Inc, Littleton Massachusetts, (978) 742-9014.  #1 PIC
> consultant in 2004 program year.  http://www.embedinc.com/products
>   
That's true for actual Interstates, but U.S. Highways can have 3 
digits.  U.S. Route 219 runs from Buffalo to Washington D.C.
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