The reason that they run numerically west to east is because the older
Highway (US) numbering system ran numerically somewhat east to west. US 1 is
on the east coast, US 101 is on the west coast.

I-20 of course goes through the south part of the country. As does I-10.

tim in san jose @ US 101 I-280

>From: Steve W <croatoa@YAHOO.COM>
>Reply-To: Steve W <croatoa@YAHOO.COM>
>To: vanagon@GERRY.VANAGON.COM
>Subject: Re: Friday Navigation Quiz
>Date: Fri, 25 Jul 2003 15:20:56 -0700
>
>John,
>I don't understand what the 3 digit number
>starting with an odd number do.  In Cincinnati,
>275 goes around, 471 shots in, 75 and 71 go up
>and down and 74 heads off to the west.  We don't
>have any odd number starting, three digit
>interstates here.  Thanks for the info.
>Steve
>--- John Connolly <john@aircooled.net> wrote:
> > it's actually 3 digit beginning with odd #s
> > (395, 795, etc) evens dead end
> > into a city.
> >
> > 3 digit beginning with evens (215, 495, etc)
> > loop around an urban area
> >
> > Interstates that are odd run north/south. It's
> > also interesting that they
> > are, from west to east, 5-95. If someone is on
> > Interstate 25, they aren't in
> > the East (it's near the rockies).
> >
> > The same characteristic is present on the even
> > #ed Interstates, from 90-10
> > (north-south).
> > I-20 has GOT to be in the south somewhere.
> >
> > John
> > Aircooled.Net Inc.
> >
>
>
>=====
>Steve
>croatoa@yahoo.com
>
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