Highway 0?

[vtk]

I prefer to think of West Virginia's fraction-like routes not as fractions, but as a number, then a really big dash, then another number, written vertically. Because that's basically how they are used.

[CentralPAGal]

Well, there have been suggestions to upgrade the US 13/17 corridor as a relief route/alternate to I-95 roughly from Wilmington or Philadelphia down to Raleigh via Newport News.  It would have made a very nice I-99 routing, and 101 is the logical substitute (what else are they gonna call it?

I-105  But seriously, it would be an ideal I-99 (or I-97...)

[Zzonkmiles]

Well, there have been suggestions to upgrade the US 13/17 corridor as a relief route/alternate to I-95 roughly from Wilmington or Philadelphia down to Raleigh via Newport News.  It would have made a very nice I-99 routing, and 101 is the logical substitute (what else are they gonna call it?

I-105  But seriously, it would be an ideal I-99 (or I-97...)

Can someone please explain why I-97 can't be renumbered as I-995? I know that 195-895 are already taken, but 995 is available, right? Its southern end is at US-50, not another interstate, so this would seem to be such an easy fix. I drove to Annapolis today and saw that I-97 shield for the first time and wanted to shoot it. ALMOST as annoying as I-99. Almost.

[Scott5114]

Oklahoma has several unsigned state highways that are carried on the books as "00". Among these are the Duncan and Poteau bypasses and a loop route in Coyle. Langston has an unsigned highway listed as "0B".

Given that Oklahoma has other state highways that are unsigned but are assigned non-zero numbers in internal documentation, one could say that Oklahoma does have a State Highway 0.

[Scott5114]

The routes are listed in Wikipedia as they appear in the control section maps (I know since I put them in Wikipedia).

[odditude]

Well, there have been suggestions to upgrade the US 13/17 corridor as a relief route/alternate to I-95 roughly from Wilmington or Philadelphia down to Raleigh via Newport News.  It would have made a very nice I-99 routing, and 101 is the logical substitute (what else are they gonna call it?

I-105  But seriously, it would be an ideal I-99 (or I-97...)

Can someone please explain why I-97 can't be renumbered as I-995? I know that 195-895 are already taken, but 995 is available, right? Its southern end is at US-50, not another interstate, so this would seem to be such an easy fix. I drove to Annapolis today and saw that I-97 shield for the first time and wanted to shoot it. ALMOST as annoying as I-99. Almost.

It doesn't connect to 95.

Neither does I-795

it actually does end at an interstate - although not posted, US 50 is also I-595 at that point. no arguments that I-97 doesn't really warrant a 2DI designation, though.

[Zzonkmiles]

Well, there have been suggestions to upgrade the US 13/17 corridor as a relief route/alternate to I-95 roughly from Wilmington or Philadelphia down to Raleigh via Newport News.  It would have made a very nice I-99 routing, and 101 is the logical substitute (what else are they gonna call it?

I-105  But seriously, it would be an ideal I-99 (or I-97...)

Can someone please explain why I-97 can't be renumbered as I-995? I know that 195-895 are already taken, but 995 is available, right? Its southern end is at US-50, not another interstate, so this would seem to be such an easy fix. I drove to Annapolis today and saw that I-97 shield for the first time and wanted to shoot it. ALMOST as annoying as I-99. Almost.

Neither does I-795

it actually does end at an interstate - although not posted, US 50 is also I-595 at that point. no arguments that I-97 doesn't really warrant a 2DI designation, though.

Are there any other 3dis that don't end at their "parent" 2di? (And NOOOO, I-238 doesn't count!) There are so many 3dis out there, I'm sure at least one has to break the rules.

[kkt]

Are there any other 3dis that don't end at their "parent" 2di? (And NOOOO, I-238 doesn't count!) There are so many 3dis out there, I'm sure at least one has to break the rules.

Of course.  Without evening thinking about it, in the S.F. Bay Area there's 380 and 980.

[Zeffy]

Are there any other 3dis that don't end at their "parent" 2di? (And NOOOO, I-238 doesn't count!) There are so many 3dis out there, I'm sure at least one has to break the rules.

I-278 in New Jersey and New York.

[dfwmapper]

Are there any other 3dis that don't end at their "parent" 2di? (And NOOOO, I-238 doesn't count!) There are so many 3dis out there, I'm sure at least one has to break the rules.

Of course.  Without evening thinking about it, in the S.F. Bay Area there's 380 and 980.

And I-280. And down in LA, I-210, until Caltrans gets around to asking for asking for the CA 210 portion to be redesignated, and I-105. And there are several that don't start/end at the parent, but do intersect in the middle, like I-605 and I-710 in LA and I-635 in Dallas.

[Zzonkmiles]

Are there any other 3dis that don't end at their "parent" 2di? (And NOOOO, I-238 doesn't count!) There are so many 3dis out there, I'm sure at least one has to break the rules.

Of course.  Without evening thinking about it, in the S.F. Bay Area there's 380 and 980.

And I-280. And down in LA, I-210, until Caltrans gets around to asking for asking for the CA 210 portion to be redesignated, and I-105. And there are several that don't start/end at the parent, but do intersect in the middle, like I-605 and I-710 in LA and I-635 in Dallas.

So if all these exceptions exist, I don't see why I-995 is not an option for I-97 then. Seems like it would be a lot easier from a renumbering standpoint than the I-70 or I-83 ideas.

Oh, and to keep this on topic, what would an I-0 3di look like? I-100? I-200? Seems like that could cause some trouble since several states have roads ending in 00, such as GA-400.

[Kacie Jane]

Oh, and to keep this on topic, what would an I-0 3di look like? I-100? I-200? Seems like that could cause some trouble since several states have roads ending in 00, such as GA-400.

Why on earth would that be a problem?

"Oh, we shouldn't number this interstate 95.  It might cause trouble in states that have roads ending in 95, such as NY-295."

P.S. Is there any evidence that there is an actual rule that 3dis have to connect directly to the 2di instead of another 3di?  I'd never been under that impression.

[Zzonkmiles]

Oh, and to keep this on topic, what would an I-0 3di look like? I-100? I-200? Seems like that could cause some trouble since several states have roads ending in 00, such as GA-400.

Why on earth would that be a problem?

"Oh, we shouldn't number this interstate 95.  It might cause trouble in states that have roads ending in 95, such as NY-295."

P.S. Is there any evidence that there is an actual rule that 3dis have to connect directly to the 2di instead of another 3di?  I'd never been under that impression.

Yes, you're right. I was thinking in terms of the regulations that forbid I-50 and I-60 because of similarly numbered US Highways in the areas where such interstates would reasonably be located. But that only applies to 2dis, not 3dis. And in the case of GA-400, that functions like a 3di of some sort for Atlanta, so there could conceivably be a GA-400 and an I-400...

...wait, where was I-0 supposed to be again?

Never mind. 

[dfwmapper]

So if all these exceptions exist, I don't see why I-995 is not an option for I-97 then. Seems like it would be a lot easier from a renumbering standpoint than the I-70 or I-83 ideas.

Oh, and to keep this on topic, what would an I-0 3di look like? I-100? I-200? Seems like that could cause some trouble since several states have roads ending in 00, such as GA-400.

Probably is an option, and the correct option if it were numbered today without congressional fuckery. But there were plans for 3dis off of I-97 when that number was originally approved, so that may explain some of it.

I-0 would obviously run through south Florida. Perhaps the E-W portion of I-75 plus I-595 into Fort Lauderdale. The 3dis would be x00s, though there might only be one or two because of the abundance of toll roads in Florida.

I 210 (Foothill Freeway) ought to be 110 or 310, it doesn't return to 10.

I-210 doesn't meet I-10 in the first place, so it certainly can't return to it. In any event, an even first digit on a 3di is intended to signify a return to another Interstate, not a return to the parent. I-210 ends at I-5, therefore it met all criteria up until Caltrans removed it from what is now the northern part of CA 57 and extended CA 210 east over what was CA 30. Whenever they get around to asking AASHTO for approval to change that to I-210, it will be back to meeting the intent of the system. See also I-240 (OK), I-680 (CA), I-880 (CA), I-205 (CA), I-225 (CO), I-270 (CO), I-435 (AR), I-635 (AR), I-440 (AR), I-220 (MS), and so forth.

[CNGL-Leudimin]

And I-280. And down in LA, I-210, until Caltrans gets around to asking for asking for the CA 210 portion to be redesignated, and I-105. And there are several that don't start/end at the parent, but do intersect in the middle, like I-605 and I-710 in LA and I-635 in Dallas.

IIRC I-635 never touches its parent, I-35. But it does intersect I-35E, which explains why I believe it should be I-635E unless it is extended all the way to I-35W. That or change the first digit to an odd number as it doesn't connect to another interstate in one end (And of course adding the E at the back).

[vtk]

Are there any other 3dis that don't end at their "parent" 2di? (And NOOOO, I-238 doesn't count!) There are so many 3dis out there, I'm sure at least one has to break the rules.

I don't think anyone has mentioned I-370 in MD yet. It is a spur from I-270, which was once I-70S but that was long before I-370 was designated.

I'm pretty sure there never was a rule that said a 3dI must connect with its parent mainline.  Connecting with a sibling 3dI or a suffixed branch of the parent is clearly sufficient.

[dfwmapper]

IIRC I-635 never touches its parent, I-35. But it does intersect I-35E, which explains why I believe it should be I-635E unless it is extended all the way to I-35W. That or change the first digit to an odd number as it doesn't connect to another interstate in one end (And of course adding the E at the back).

I-635 was a loop with both ends at I-35E when the system was originally designed. The portion west of I-35 was added much later after DFW Airport was built. The southern leg was transferred to I-20 when it was connected to the west. Your theory about it not touching its parent because of the letter suffix is wrong and stupid and we shall not discuss it any further.