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Author Topic: Long stretches of interstate without 3dis  (Read 11744 times)

Molandfreak

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Long stretches of interstate without 3dis
« on: August 28, 2013, 02:54:57 AM »

What's the longest stretch of a single interstate where you can't find any of its own child routes? I think it's I-40 from I-240 in OKC all the way to California. The longest 2di that isn't a parent to anything I think is I-39. Another long stretch is I-90 west of Rapid City. The east coast winner I think is I-91 north of Chicopee, MA. Anything else notable?
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Re: Long stretches of interstate without 3dis
« Reply #1 on: August 28, 2013, 03:03:41 AM »

Until 2003, 560 miles on I-95 from Jacksonville FL to Petersburg VA.
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Re: Long stretches of interstate without 3dis
« Reply #2 on: August 28, 2013, 06:12:22 AM »

Quote
Until 2003, 560 miles on I-95 from Jacksonville FL to Petersburg VA.

Ahead of that would be the ~636 miles on I-64 between Louisville, KY and Hampton, VA since the OP is referring to an Interstate's own child routes.  Even if you factor in I-295 Richmond and I-265 Louisville, it's still over 540 miles.

Close behind would be I-81...~540 miles between Roanoke, VA and Syracuse, NY.
« Last Edit: August 28, 2013, 06:17:00 AM by froggie »
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Re: Long stretches of interstate without 3dis
« Reply #3 on: August 28, 2013, 11:00:39 AM »

Ahead of that would be the ~636 miles on I-64 between Louisville, KY and Hampton, VA since the OP is referring to an Interstate's own child routes.  Even if you factor in I-295 Richmond and I-265 Louisville, it's still over 540 miles.

That's the one that I immediately thought of.
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Re: Long stretches of interstate without 3dis
« Reply #4 on: August 28, 2013, 11:22:20 AM »

I would suspect I-90 would be close, twice.  Once from Seattle to Rapid City; the second from Rapid City to the Chicagoland area.

Them having the full boat in New York would make up for that.  :-)
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Re: Long stretches of interstate without 3dis
« Reply #5 on: August 28, 2013, 11:28:48 AM »

I would suspect I-90 would be close, twice.  Once from Seattle to Rapid City; the second from Rapid City to the Chicagoland area.

Them having the full boat in New York would make up for that.  :-)
From the early 1980s (when I-880 disappeared from Sacramento) until I-580 to Carson City came along, I-80 between the Bay Area and Cheyenne had no 3di's, although if you want to argue against the "phantom" I-180 and all of its quirks, then you can say the stretch between Reno and Lincoln, NE has no real 3di's.
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Re: Long stretches of interstate without 3dis
« Reply #6 on: August 28, 2013, 11:33:54 AM »

I-10 from El Paso, TX (110) to Redlands, CA (210) is about 743 miles without intersecting a child route. If we discount I-110 (It's less than a mile long) and I-210 (I still don't think it's signed as an Interstate, although I could be wrong), It grows to 1,341 miles from LA (710) to San Antonio (410).

I-40 goes 1,228 miles between its terminus in Barstow and I-240 in OKC.
« Last Edit: August 28, 2013, 11:39:18 AM by Thing 342 »
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Re: Long stretches of interstate without 3dis
« Reply #7 on: August 28, 2013, 11:35:35 AM »

Personally, I'd be hesitant to include I-90 from Seattle to Rapid City.  It has I-115 in Montana where it's concurrent with I-15.
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Re: Long stretches of interstate without 3dis
« Reply #8 on: August 28, 2013, 11:42:58 AM »

I-88 and I-89 have no 3dis except for I-189 at the very northern end of I-89.
I-87 north of I-787 has no 3dis.
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Re: Long stretches of interstate without 3dis
« Reply #9 on: August 28, 2013, 12:14:12 PM »

If and when I-49 gets completely built from downtown New Orleans to Kansas City, the results are about 900 miles. This is assuming that 49 gets built through downtown Shreveport instead of on the loop resulting in a I-149 spur or the like.
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Re: Long stretches of interstate without 3dis
« Reply #10 on: August 28, 2013, 12:53:05 PM »

I wonder what is longer out west: I-505 to I-105, or I-205 to I-405. 
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Re: Long stretches of interstate without 3dis
« Reply #11 on: August 28, 2013, 01:01:41 PM »

I-81, between Syracuse, NY (I-481), and Roanoke, VA (I-581), is about 535 miles, and the only child it meets is I-380 in Scranton.
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Re: Long stretches of interstate without 3dis
« Reply #12 on: August 28, 2013, 01:21:43 PM »

534 miles on I-10 between I-110 El Paso and I-410 San Antonio - and the best part, it's all in one state.  :)
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Re: Long stretches of interstate without 3dis
« Reply #13 on: August 28, 2013, 01:23:55 PM »

534 miles on I-10 between I-110 El Paso and I-410 San Antonio - and the best part, it's all in one state.  :)

and in the other direction, it's 797 miles to the next one: I-710 in Los Angeles. 

I think I-210 was pointed out, but I don't believe it is I-210 quite yet.
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Re: Long stretches of interstate without 3dis
« Reply #14 on: August 28, 2013, 01:37:51 PM »

I-10 from El Paso, TX (110) to Redlands, CA (210) is about 743 miles without intersecting a child route. If we discount I-110 (It's less than a mile long) and I-210 (I still don't think it's signed as an Interstate, although I could be wrong), It grows to 1,341 miles from LA (710) to San Antonio (410).


Why not count the Texas Interstate 110?  It is signed now.

Officially, the longest interstate without a 3di is Interstate 57.
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Re: Long stretches of interstate without 3dis
« Reply #15 on: August 28, 2013, 02:02:09 PM »

I wonder what is longer out west: I-505 to I-105, or I-205 to I-405.
Longer stretch is I-505 to I-105. 

By my rough calculations using exit numbers the California segment is 244 miles long (797-553=244, CA/OR Stateline to Exit 553/I-505) while the Oregon segment is 194 miles (I-105 is Exit 194) for a total distance of 438 miles.

In contrast, the distance from I-205 (Exit 458) to I-405 (Exit 158) is only 300 miles.
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Re: Long stretches of interstate without 3dis
« Reply #16 on: August 28, 2013, 02:22:35 PM »

Notable is Interstate 25 from its beginning in Las Cruces to Interstate 225 in Denver at 662 miles.

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Re: Long stretches of interstate without 3dis
« Reply #17 on: August 28, 2013, 02:35:12 PM »

Quote
Personally, I'd be hesitant to include I-90 from Seattle to Rapid City.  It has I-115 in Montana where it's concurrent with I-15.

The OP specifically mentioned a given route's "child" 3dis.  Given that, I-115 wouldn't count in the I-90 case.

Quote
I-81, between Syracuse, NY (I-481), and Roanoke, VA (I-581), is about 535 miles, and the only child it meets is I-380 in Scranton.

I'd mentioned I-81 previously.  Plus you forget I-476. :o)
« Last Edit: August 28, 2013, 02:43:07 PM by froggie »
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Kacie Jane

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Re: Long stretches of interstate without 3dis
« Reply #18 on: August 28, 2013, 04:36:55 PM »

Quote
Personally, I'd be hesitant to include I-90 from Seattle to Rapid City.  It has I-115 in Montana where it's concurrent with I-15.

The OP specifically mentioned a given route's "child" 3dis.  Given that, I-115 wouldn't count in the I-90 case.

Right, but this is sort of a special case, I'd think.  Like I'm not talking about it merely intersecting some other route's 3di; I-115 branches off I-90 just as much as it does I-15, you'd only not recognize it as a child due to a numbering quirk.  (Plus, it's cosigned with BL I-90, so it's still a child of 90 in that sense.)

But I do see the point of the OP, and I agree that there are shockingly few x90s for a route of its length.
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Re: Long stretches of interstate without 3dis
« Reply #19 on: August 28, 2013, 05:18:41 PM »

Notable is Interstate 25 from its beginning in Las Cruces to Interstate 225 in Denver at 662 miles.

And from I-225 to its end in Buffalo WY there is another 400 miles without any x25. I-225 is the only I-x25 in existence unless I'm missing something.

I-45 all the way. Its only 3di, unsigned I-345, starts where I-45 ends.
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Re: Long stretches of interstate without 3dis
« Reply #20 on: August 28, 2013, 05:34:23 PM »

Interstates that should be excluded from this discussion, IMHO.

Interstates without a 3di: 2, 4, 8, 12, 17, 19, 27, 37, 39, 41, 43, 49, 57, 66, 68, 73, 86, 88, 97, 99

Interstates with only one current 3di (signed or unsigned) or other 3dis that branch of the one 3di that actually connects to the parent: 16, 24, 25, 26, 44, 45, 69 (yes, others are in the future), 72, 74, 78 (none of them actually meet their parent), 79, 82, 83, 89

These could theoretically be infinite between child 3dis.
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Re: Long stretches of interstate without 3dis
« Reply #21 on: August 28, 2013, 07:40:22 PM »

I-69 creates no 3dis between Ft. Worth and Sarnia.  (There is I-496 in Lansing, and I-475 in Flint)


I-84 creates no 3dis between Portland and Boise.


I-5 creates no 3dis between Springfield and Manteca. (There is I-180/80B in Sacramento)
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Re: Long stretches of interstate without 3dis
« Reply #22 on: August 28, 2013, 07:43:51 PM »

I-5 creates no 3dis between Springfield and Manteca. (There is I-180/80B in Sacramento)
I-80 Biz is I-305. And there's I-505 to the north.
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Re: Long stretches of interstate without 3dis
« Reply #23 on: August 28, 2013, 07:46:48 PM »

Interstates that should be excluded from this discussion, IMHO.

Interstates without a 3di: 2, 4, 8, 12, 17, 19, 27, 37, 39, 41, 43, 49, 57, 66, 68, 73, 86, 88, 97, 99

Interstates with only one current 3di (signed or unsigned) or other 3dis that branch of the one 3di that actually connects to the parent: 16, 24, 25, 26, 44, 45, 69 (yes, others are in the future), 72, 74, 78 (none of them actually meet their parent), 79, 82, 83, 89

These could theoretically be infinite between child 3dis.

I-26 has I-126 and I-526


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Re: Long stretches of interstate without 3dis
« Reply #24 on: August 28, 2013, 08:22:39 PM »

Entire length of I-57 from the Dan Ryan in Chicago to it's terminus at I-55. Entire stretch, least until they finish the interchange with I-294
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MI: I-94, I-196
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