3dis vs 2dis

[texaskdog]

Is it just me, or does it drive any of you crazy when a 3di is longer than it's 2di, such as US 191 & US 91?

[dgolub]

Is it just me, or does it drive any of you crazy when a 3di is longer than it's 2di, such as US 191 & US 91?

Well, those aren't interstates; they're US routes.  I think it happens a lot more often with interstates than US routes, since some of the three-digit US routes are pretty long.  Here in the Northeast, we've got US 202 which goes all the way from Maine to Delaware, and I'm pretty sure it's longer than the eastern section of US 2.

[agentsteel53]

nope.  it is more meaningless to have a glorified connector ramp be given a 3di number.  see I-175, both I-375s, etc.

[jbnv]

I don't like that US 165 and 167 (and arguably 425) are major routes in Louisiana, while US 65 is largely forgotten in Louisiana and the state has a useless extension of US 63 that just overlaps a short stretch of US 167.

[Brandon]

nope.  it is more meaningless to have a glorified connector ramp be given a 3di number.  see I-175, both I-375s, etc.

I-865, Indiana is a strong contender in that department.  No exits for 4 miles and exists solely to connect I-65 (toward Chicago) with the I-465 loop.

[Rover_0]

nope.  it is more meaningless to have a glorified connector ramp be given a 3di number.  see I-175, both I-375s, etc.

I-865, Indiana is a strong contender in that department.  No exits for 4 miles and exists solely to connect I-65 (toward Chicago) with the I-465 loop.

I wouldn't put I-865 in the same category as Florida's I-175 and I-375. Yes, it has no exits, but it still is 4 miles long. And was its confusing former designation (an offshoot of I-465) any better?

[Brandon]

nope.  it is more meaningless to have a glorified connector ramp be given a 3di number.  see I-175, both I-375s, etc.

I-865, Indiana is a strong contender in that department.  No exits for 4 miles and exists solely to connect I-65 (toward Chicago) with the I-465 loop.

I wouldn't put I-865 in the same category as Florida's I-175 and I-375. Yes, it has no exits, but it still is 4 miles long. And was its confusing former designation (an offshoot of I-465) any better?

It's an artifact of the FHWA's insistence that 3di loop exit numbering starts at the south end of the loop.  I-465 should start at I-65 near Zionsville and go all the way around east, south, west, and then back north to what is currently I-865.  That would remove any confusion without the added 3di.

[Perfxion]

I think some interstates should be 3di vs a wasted 2di. 97 and 99 quickly come to mind. 69E and 69C also come to mind.

[agentsteel53]

It's an artifact of the FHWA's insistence that 3di loop exit numbering starts at the south end of the loop.  I-465 should start at I-65 near Zionsville and go all the way around east, south, west, and then back north to what is currently I-865.  That would remove any confusion without the added 3di.

that implies a Q-shaped interstate.  I would not want to be the one tasked to design quickly comprehensible signage at the 465-465-465 junction.

[getemngo]

If we're talking about US highways, then yes, I find it annoying when a 3dus is longer than its parent. Or, when a 2dus and 3dus connect twice and the 3dus is the shorter route between the points, like with US 41 and 141. Or, when a 3dus no longer touches its parent.

If the 2 digit highway is scaled back so that it's less important than one of its 3 digit routes, I'd like to see the parent route replace the 3 digit route when possible. For example, when I-94 was built in Michigan, instead of US 12 being truncated to New Buffalo, US 112 was decommissioned and US 12 rerouted over it.

I think some interstates should be 3di vs a wasted 2di. 97 and 99 quickly come to mind. 69E and 69C also come to mind.

Ugh, don't even mention those new suffixed routes.

[Brandon]

It's an artifact of the FHWA's insistence that 3di loop exit numbering starts at the south end of the loop.  I-465 should start at I-65 near Zionsville and go all the way around east, south, west, and then back north to what is currently I-865.  That would remove any confusion without the added 3di.

that implies a Q-shaped interstate.  I would not want to be the one tasked to design quickly comprehensible signage at the 465-465-465 junction.

Heading north:

TO {65} NORTH     {465} EAST
Chicago

Heading west:

TO {65} NORTH     {465} SOUTH
Chicago

Heading east:

{465} EAST          {465} SOUTH

Not too difficult.  I-865 is unnecessary.

[CNGL-Leudimin]

Eliminate I-865 and leave that long ramp as US 52.

The OP meant any 3dus longer than its parent 2dus. But then, as 1 pointed out in another thread:

3dus -> 3di

[agentsteel53]

so you're treating the 865 segment as "to 65" in one direction.  may as well just keep it 865, make it unsigned, and throw in "to 465" as appropriate in the other direction (i.e. on 65). 

I wonder why "to" signage isn't more prevalent on freeway segments that are not much more than ramps.  I-175 could be signed as "to US-92" (or to downtown or whatnot) in one direction and "to I-75" in the other.

[hotdogPi]

69C and 69E are not "wasted". If they were, that means much better routes could use them, and  that's not the case.

97 and 99, however, are wasted.

[vdeane]

69C and 69E are not "wasted". If they were, that means much better routes could use them, and  that's not the case.

97 and 99, however, are wasted.

They wasted our collective sanity.

[amroad17]

It's an artifact of the FHWA's insistence that 3di loop exit numbering starts at the south end of the loop.  I-465 should start at I-65 near Zionsville and go all the way around east, south, west, and then back north to what is currently I-865.  That would remove any confusion without the added 3di.

that implies a Q-shaped interstate.  I would not want to be the one tasked to design quickly comprehensible signage at the 465-465-465 junction.

Heading north:

TO {65} NORTH     {465} EAST
Chicago

Heading west:

TO {65} NORTH     {465} SOUTH
Chicago

Heading east:

{465} EAST          {465} SOUTH

Not too difficult.  I-865 is unnecessary.

This was the original signage at that particular interchange (with US 52 NORTH) added to the "heading west" before it was changed to I-865.  I do not see anything wrong with the addition of I-865.  It is separate from the loop and performs the same function as future I-222 will outside of Birmingham.

[Charles2]

Until the '90's, US-278 was shorter than US-78, as 278 went from Tupelo, MS to Hilton Head, SC.  It has since been extended westward into Arkansas and practically into Oklahoma (1074 miles).  US-78 goes from Memphis to Charleston (715 miles).  Once I-22 is completed, 78 should probably be truncated at Birmingham.

[andy3175]

I wonder why "to" signage isn't more prevalent on freeway segments that are not much more than ramps.  I-175 could be signed as "to US-92" (or to downtown or whatnot) in one direction and "to I-75" in the other.

It always surprised me that US 92 was never extended to connect directly with I-275 (or I-175 or I-375 for that matter). It would make sense for US 92 to make that final leap to connect to the freeway before ending. Right now, US 92 ends only a few blocks from where I-375's eastern end is.

Bringing this back to topic, US 192 is about 2/3rds the length of US 92. So while US 92 is longer, US 192 is surprisingly lengthy in comparison.

My pet peeve has always been how US 169 travels further north than US 69. Silly Minnesota!

[texaskdog]

I wonder why "to" signage isn't more prevalent on freeway segments that are not much more than ramps.  I-175 could be signed as "to US-92" (or to downtown or whatnot) in one direction and "to I-75" in the other.

It always surprised me that US 92 was never extended to connect directly with I-275 (or I-175 or I-375 for that matter). It would make sense for US 92 to make that final leap to connect to the freeway before ending. Right now, US 92 ends only a few blocks from where I-375's eastern end is.

Bringing this back to topic, US 192 is about 2/3rds the length of US 92. So while US 92 is longer, US 192 is surprisingly lengthy in comparison.

My pet peeve has always been how US 169 travels further north than US 69. Silly Minnesota!

Yes, that's another one!

And while making US 27 into US 127 was the right thing to do, same thing!  Of course I think the 99 longest US highways should be the 2dis.  I wonder what that would look like.

[Alps]

69C and 69E are not "wasted". If they were, that means much better routes could use them, and  that's not the case.

97 and 99, however, are wasted.

They wasted our collective sanity.

Especially if you pronounce it "wosted."
US 202 should be two US highways, with a gap from Denville, NJ to Springfield, MA.

[national highway 1]

I wonder why "to" signage isn't more prevalent on freeway segments that are not much more than ramps.  I-175 could be signed as "to US-92" (or to downtown or whatnot) in one direction and "to I-75" in the other.

It always surprised me that US 92 was never extended to connect directly with I-275 (or I-175 or I-375 for that matter). It would make sense for US 92 to make that final leap to connect to the freeway before ending. Right now, US 92 ends only a few blocks from where I-375's eastern end is.

Bringing this back to topic, US 192 is about 2/3rds the length of US 92. So while US 92 is longer, US 192 is surprisingly lengthy in comparison.

My pet peeve has always been how US 169 travels further north than US 69. Silly Minnesota!

Yes, that's another one!

And while making US 27 into US 127 was the right thing to do, same thing!  Of course I think the 99 longest US highways should be the 2dis.  I wonder what that would look like.

Dude, they're 2duses. Not 2dis!

[tidecat]

Any chance that the I-465 designation may one day bite the dust?  Once I-69 is completed, the majority of the loop will be I-69 or I-74, if not both.  I-865 could take over the northern part of the loop, and the remaining part of the western portion of the loop could be something like I-474.

[vdeane]

Probably not, if only to hide the jump in I-69's exit numbers.  They added 200 to the existing numbers, but it's less than 200 miles from Kentucky to the current I-69/I-495 interchange.

[texaskdog]

I wonder why "to" signage isn't more prevalent on freeway segments that are not much more than ramps.  I-175 could be signed as "to US-92" (or to downtown or whatnot) in one direction and "to I-75" in the other.

It always surprised me that US 92 was never extended to connect directly with I-275 (or I-175 or I-375 for that matter). It would make sense for US 92 to make that final leap to connect to the freeway before ending. Right now, US 92 ends only a few blocks from where I-375's eastern end is.

Bringing this back to topic, US 192 is about 2/3rds the length of US 92. So while US 92 is longer, US 192 is surprisingly lengthy in comparison.

My pet peeve has always been how US 169 travels further north than US 69. Silly Minnesota!

Yes, that's another one!

And while making US 27 into US 127 was the right thing to do, same thing!  Of course I think the 99 longest US highways should be the 2dis.  I wonder what that would look like.

Dude, they're 2duses. Not 2dis!

You know, I always thought di stood for digits not interstates.  After all these years I'm still not up with all the lingo.

[getemngo]

You know, I always thought di stood for digits not interstates.  After all these years I'm still not up with all the lingo.

Not that it's in any way current, but the m.t.r. FAQ says it usually, but not always, refers to Interstates.