🚀 go-pugleaf

In article <Co86wy.Gtz@forge.tandem.com>,
Scott Hazen Mueller <scott@tandem.com> wrote:
>
>In article <2oi2dd$bg2@news.hal.COM>, awong@hal.COM (Anthony Wong (or LM)) writes:
>>And more interesting, a lot of interstate highways do not even go
>>beyond the limits of one city.  Apparently they are called interstate
>>because they are funded by the federal government, which is an "interstate"
>>agency.
>
>Hit 'n' now if you don't care about interstate numbering trivia.
>
>Factoid #1 - Interstate highways, the main routes, are numbered even for
>east-west, and odd for north-south, e.g. I-80 from NYC to SFO, and I-95 from
>New Hampshire to Florida.
>
>Factoid #2 - The main routes are numbered from the south-west.  The lowest-
>numbered even main route is I-4 in Florida, the highest is either I-96 or
>I-98 in the Northeast.

I-96.  It runs from Muskegon, Michigan to Detroit.

> The lowest-number odd main route is I-5 on the West
>Coast, the highest either I-95 on the East Coast, or possibly there's an I-97
>in New England; I forget.

I-97 from the Baltimore Beltway to Annapolis, MD.

>Factoid #4 - I-4, H-1, H-2, and H-3 are the only interstate main routes to not
>cross a state border.  I-4 is in Florida, H-1 through H-3 are all in Hawaii.

Add to this I-12 and I-49 in Louisiana, I-16 in Georgia, I-17 and I-19 in 
Arizona, I-27, I-37, and I-45 in Texas, I-39 and I-72 in Illinois, I-43 in
Wisconsin, I-86 in Idaho, I-87 in New York, I-96 in Michigan, and I-97 in
Maryland.  You might also conceivably add I-88 which exists in two sections,
one of which lies completely within Illinois, and the other which lies
completely in New York.

Factoid #6 - Originally some interstates were labelled with a combination
of letters and numbers.  Some people will remember 80N through Utah, Idaho,
and Oregon, 80S through Nebraska and Colorado, and 35W through Kansas.
When the decision was made to go to numbers only, these became 84, 76, and
135 respectively.  The only places where alphanumeric combinations remain
are Hawaii (with H1, H2, and H3), and in the Minneapolis-St. Paul and
Dallas-Fort Worth areas where I-35 splits into 35W (through downtown
Minneapolis and Ft. Worth) and 35E (through downtown St. Paul and Dallas).

--Brendan