Re: How do they count the miles for the mile markers?
- From: Jon Enslin <jenslin@xxxxxxxxxxx>
- Date: Mon, 3 Aug 2009 10:34:19 -0700 (PDT)
On Jul 30, 11:35 pm, Free Lunch <lu...@xxxxxxxxxxxxxx> wrote:
On Thu, 30 Jul 2009 20:13:10 -0700 (PDT), Steve Riner
<highplainstrave...@xxxxxxx> wrote in misc.transport.road:
On Jul 30, 8:53 pm, gaze...@xxxxxxxxxxxxxxxxxx (Kenny McCormack)
wrote:
... when highways are multiplexed? I know that if possible, they defer
to the more "senior" of the highways. I.e., if a US and an Interstate
are multiplexed, the mile marker numbering is done for the Interstate.
But what if they are of equal status, such as two US routes?
How do they break the tie?
Many places use the lower numbered route. Examples - New Mexico does
not have concurrent state routes, but where there are concurrent U.S.
routes, the lower numbered route is "dominant" and the other route(s)
"subordinate." (Sounds kinda kinky, now that I mention it). Colorado
also uses the lower-numbered route of equal rank for continuity. A
significant exception I can think of is Minnesota, where in the
I-94/694 concurrent segment, the exit numbers and mileposts are based
on I-694/494, i.e. the Twin Cities beltway. That is probably an
exception because the concurrent segment is part of the beltway. I
believe in Minnesota that there are other concurrencies where the
obvious continuous route determines the mileposts, even though the
concurrent route is lower numbered (i.e., MN-65/27).
Steve Riner
Pueblo West CO
Explore New Mexico and Minnesota highways:http://www.steve-riner.com
That is generally the case in Wisconsin, though they didn't bother to
renumber exits on I-39/90 or I-39/90/94 when I-39 was added. Even though
I-94 is the most significant interstate in Wisconsin, I-90 exit
numbering prevails.
Actually, I-39 doesn't use it's own exit numbers throughout
Wisconsin. The stretch from Portage to Wausau uses the old US-51
numbers and between Beloit and Portage, US-51 takes a route that is 5
miles longer than I-39. (This is simple to figure out...since I-90 is
187 miles long in Wisconsin, and since the Cascade exit is I-90 exit
108, that means that I-39/90 extends 79 miles to the IL border. The
Cascade exit is I-39's exit 84. That five mile difference is the
difference between US-51 and I-39.)
Jon
.
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