Interstates that have children in all of its states

[ethanhopkin14]

Pretty sure we've exhausted the list (not counting any intrastate).

I-5
I-30
I-35
I-71
I-75

Close misses:
I-15 - Missing ID
I-20 - Missing AL
I-65 - Missing TN

Chris

I am lost on I-30.  Texas doesn't have an I-X30 on account of Texas being allergic to 3dis.  Not New Mexico or Arizona level allergic...more like they have to take an epipen when they see a 3di, instead of going straight to the hospital.

You're right.  I had just skimmed the first posts in the thread and someone had said I-30 was accurate.  I edited my post.

Chris

That was my mistake; oops.  I think I was misremembering the Texarkana Loop, which isn't currently an x30 in either state.

It may have come from the eastern quadrant of the Texarkana loop being approved as I-130, but only on the Arkansas side.  Texas did not comply (buttholes).  Now that section of highway is not I-49 so it did technically become I-130 but was never signed. 

[Evan_Th]

Are there any 3di that have children of their own?  Do any of those enter multiple states?  Do any of those have children in both states?

Another example could be I-795 in Maryland, which does not connect to I-95, only to I-695.  It's contained within Maryland however.

If some posters had their way and renumbered I-97 to I-995, that would be another example.

I don't think they're technically children of each other, as another poster said, "one sibling baby-sitting another".

(Now if you were to introduce 4di and have them be children of 3di???  whispering so FritzOwl doesn't hear me and get any ideas)

I-2795?

What would that be a child of?

I-2795 would be a child of I-795.  If it has its own child, it might be I-12795.

[Roadgeekteen]

Are there any 3di that have children of their own?  Do any of those enter multiple states?  Do any of those have children in both states?

Another example could be I-795 in Maryland, which does not connect to I-95, only to I-695.  It's contained within Maryland however.

If some posters had their way and renumbered I-97 to I-995, that would be another example.

I don't think they're technically children of each other, as another poster said, "one sibling baby-sitting another".

(Now if you were to introduce 4di and have them be children of 3di???  whispering so FritzOwl doesn't hear me and get any ideas)

I-2795?

What would that be a child of?

I-2795 would be a child of I-795.  If it has its own child, it might be I-12795.

MD 940 interstate incoming

[SkyPesos]

I-80:
CA: 280, 380, 580, 680, 780, 880, 980
NV: 580
UT: None
WY: 180 
NE: 480, 680
IA: 280, 380, 480, 680, 880
IL: 180, 280
IN: None
OH: 280, 480, 680
PA: 180, 380
NJ: 280

For a transcon interstate, pretty impressive that I-80 lacks 3di in only 2 states it goes through.

And then I-40, starting from the east coast does really well, not missing any states, and then it all comes to a screeching halt once it hits the Texas border.

Chris

Same with I-76. Starts out in the east with 676 pretty much right away, then is on a roll in PA with every first digit from 1-6 used, then comes to a screeching halt in OH, NE and CO.

[US 89]

Close misses:
I-15 - Missing ID

Arizona too.

[SkyPesos]

I'll expand jayhawkco's list here...

3di in more states than parent goes through:
- I-35 (7/6, including WI)
- I-38 (1/0, including CA) 
- I-75 (7/6, including IN)
- I-87 (3/2, including NJ)

3di in same number of states parent goes through, but no 3di in one of the states parent goes through:
- I-29 (4/4, including IA, missing ND)

3di in all and same number of states parent goes through:
- I-5 (3/3)
- I-45 (1/1)
- I-71 (2/2)
- I-96 (1/1)

3di in at least 70% of states parent goes through:
- I-20 (5/6, 83%, missing AL)
- I-65 (3/4, 75%, missing TN)
- I-69 (5/6, 83%, missing MI)
- I-70 (7/10, 70%, missing UT, IN and PA)
- I-80 (9/11, 82%, missing UT and IN)
- I-94 (5/7, 71%, missing MT and IN)
- I-95 (13/16, 81%, missing GA, SC and NH)

2di with same or more 3dis as numbered of states passed through, and didn't make the above lists:
- I-10 (13/8)
- I-15 (6/6)
- I-64 (6/6)
- I-76 (5/5)
- I-79 (2/2)
- I-85 (9/5)
- I-90 (15/13)

[Roadgeekteen]

On the flip side, what interstate has the lowest percentage of states (with the exception of the 0% states)?

[TheHighwayMan3561]

On the flip side, what interstate has the lowest percentage of states (with the exception of the 0% states)?

My first guess is I-25 (just one child in three states and 1,065 miles)

[froggie]

^ I-59 hits 4 states but has child routes in just one of them...granted, it has 3 child routes in that one state.

[ethanhopkin14]

^ I-59 hits 4 states but has child routes in just one of them...granted, it has 3 child routes in that one state.

And all children happen during the I-59/I-20 concurrency.  You could argue that those children are step children (being just as easily numberd I-X20).

[JayhawkCO]

3di in all and same number of states parent goes through:
- I-5 (3/3)
- I-45 (1/1)
- I-71 (2/2)
- I-96 (1/1)

You forgot I-H1.

Chris

[JayhawkCO]

On the flip side, what interstate has the lowest percentage of states (with the exception of the 0% states)?

I-24 is in four states and only has a 3di in one of them and it's unsigned.

I-74 is in five states and only has a 3di in one.

Chris

[SEWIGuy]

On the flip side, what interstate has the lowest percentage of states (with the exception of the 0% states)?

I-24 is in four states and only has a 2di in one of them and it's unsigned.

I-74 is in five states and only has a 2di in one.

Chris

Assuming you mean 3di.

[SkyPesos]

On the flip side, what interstate has the lowest percentage of states (with the exception of the 0% states)?

I-24 is in four states and only has a 2di in one of them and it's unsigned.

I-74 is in five states and only has a 2di in one.

Chris

Granted I-74 barely enters IA and OH, I-24 barely enters GA, and I-59 (mentioned above) barely enters LA and GA.

Though this doesn't seem like a problem for some other interstates. Like I-64 have a "state route 3di"  in a state it goes through for only 40 miles. And of course, I-78 in NY.

[zachary_amaryllis]

Are there any 3di that have children of their own?  Do any of those enter multiple states?  Do any of those have children in both states?

just a shot in the dark... the *80's in the bay area? seems like some of them might just connect to each other...

[cpzilliacus]

Are there any 3di that have children of their own?  Do any of those enter multiple states?  Do any of those have children in both states?

Another example could be I-795 in Maryland, which does not connect to I-95, only to I-695.  It's contained within Maryland however.

Another Maryland example is I-370, a spur of of I-270 and rather far from the I-70 parent.

[SkyPesos]

Are there any 3di that have children of their own?  Do any of those enter multiple states?  Do any of those have children in both states?

just a shot in the dark... the *80's in the bay area? seems like some of them might just connect to each other...

Yes. 280 and 980 doesn't directly connect to I-80. Though 280 gets pretty close by in SF, and you could theoretically extend 80 south 2.3 miles on US 101 to end at and meet 280.

[JayhawkCO]

On the flip side, what interstate has the lowest percentage of states (with the exception of the 0% states)?

I-24 is in four states and only has a 2di in one of them and it's unsigned.

I-74 is in five states and only has a 2di in one.

Chris

Assuming you mean 3di.

Correct.  Was an early post for me.  I have since edited (and woken up).

Chris

[JayhawkCO]

On the flip side, what interstate has the lowest percentage of states (with the exception of the 0% states)?

I-24 is in four states and only has a 2di in one of them and it's unsigned.

I-74 is in five states and only has a 2di in one.

Chris

Granted I-74 barely enters IA and OH, I-24 barely enters GA, and I-59 (mentioned above) barely enters LA and GA.

But, in those barely visited states, at least the interstates are in metro areas that actually require 3dis, just not from those 2dis.  It's not an I-82 in Oregon situation.

Chris

[formulanone]

Unless these spurs and loops are grown up and providing for themselves, these are some very irresponsible parent interstates.

[SkyPesos]

Unless these spurs and loops are grown up and providing for themselves, these are some very irresponsible parent interstates.

I-78 is the second most irresponsible parent interstate. First is I-38.

[SkyPesos]

I posted these two in another 3di thread, but thought it may add to the conversation here:

Since this seems to be the general thread about 3 digit interstates now, here's something I have made up: the 3di frequency rate. Find a 2di route, and count every 3di occurrence of its own. Duplicated numbers will be counted separately from each other. Take the final total, and divide it from its parent route's length. This will give you what I call the "3di frequency rate". A number of 0 means that the 2di has no 3di. Besides 0s, let's see which 2di has the lowest 3di frequency rate, and which has the highest.

Example for I-75:
Length: 1786.47 mi
3di of I-75: I-175, I-275 x4, I-375 x2, I-475 x3, I-575, I-675 x3 = 14
1786.47/14 = 127.605 mi/3di

For the highest, I imagine I-25 would be the winner
For the lowest, some candidates I have in mind just from a glimpse are I-76 Eastern, I-78, I-85, I-91 and I-95. Someone else can feel free to calculate the number for them.

I made a spreadsheet with the number of signed current 3di today, here's some interesting facts I gathered from that spreadsheet:

- 40 2di numbers have a signed 3di. If including unsigned, the number goes up to 42, adding in I-24 and I-45.
- This shouldn't come as a surprise, but I-95 have the most signed 3di variants, at 30 of them, with I-80 (22), I-90 (15), I-75 (14), I-40 (13) and I-10 (13) behind it, as the 5 highest.
- The most used 3di first digit and with the most 3di variants are the I-2xx, with 29 of the 40 2di with an I-2xx, and 61 I-2xx variants.
- As expected, the I-1xx are the most used odd 3di first digit. For second place, 3xx have more total variants, but more 2di have a 5xx.

[ethanhopkin14]

Unless these spurs and loops are grown up and providing for themselves, these are some very irresponsible parent interstates.

I-78 is the second most irresponsible parent interstate. First is I-38.

I-78 is a better parent because it is at least somewhat around while it's children run amuck in the big city?  You are saying that's better then I-38 not even being there at all? 

I think I-90 is irresponsible in Buffalo.  I-990 isn't strong enough to live on it's own and I-90 left I-290 in charge.  I-290 is hardly a qualified babysitter. 

[kphoger]

I think I-90 is irresponsible in Buffalo.  I-990 isn't strong enough to live on it's own and I-90 left I-290 in charge.  I-290 is hardly a qualified babysitter. 

Really?  I-290 is nearly twenty years older than I-990.

[SEWIGuy]

I think I-90 is irresponsible in Buffalo.  I-990 isn't strong enough to live on it's own and I-90 left I-290 in charge.  I-290 is hardly a qualified babysitter. 

Really?  I-290 is nearly twenty years older than I-990.

Any adult who hangs out in Buffalo is a problem IMO.