Since... Insteratates/roads that do X and X are common now for posts...here is an easy one.
Interstates that within a state line do not meet any other interstate, 3di or 2di, BL is fine, 3di without any meets that cross a state line is fine too.
Before someone brings it up, i684 CT. It barely counts.
Other than i-44 in TX, can anyone find any other examples?
I-15 in Arizona.
I-275 in Indiana
I-81 in West Virginia
I-72 in Missouri
I-155 in Tennessee (for now)
I-72 in Missouri typed too slow
Technically, I-495/I-95 in DC counts, but that's not a state.
I-59 in GA
iPhone
Quote from: bassoon1986 on December 19, 2019, 05:02:40 PM
I-59 in GA
iPhone
The northern terminus is at I-24, which that small sliver is in Georgia.
I-129 in Nebraska.
I-155 in Tennessee (until I-69 is finished).
First I thought of is I-95 NH.
I-90 in Idaho
I-535 in Wisconsin.
Once I-785 is completed between Danville and Greensboro, it won't connect to any other interstates in Virginia.
Interestingly enough, I-95 in North Carolina did not connect with any interstate highways until 1990 when I-40 was extended from Raleigh to I-95. Today, it connects to 4 interstate highways, I-40 built in 1990, I-795 built in 2003, I-295 built in 2005, and I-74 built in 2007, and at least 2 more connections are planned in the future, I-87 where the existing US-64 / I-95 junction is, and the southern terminus of I-295 currently under construction. When US-70 is upgraded to I-42 around the I-95 vicinity, a direct interchange may be constructed, making a 3rd addition. I-587 will be designated between Raleigh and Greenville in the future along US-264 as well, but that would overlap I-795 around the I-95 vicinity, not being a separate facility.
In the original system, eastern North Carolina was isolated from the system, and was only served by I-95, which was still well inland. Today, there's one completed interstate highway linking to the coast (I-40), one completed freeway (future I-587) linking to the one of the largest cities in the east, Greenville, and three more interstate highways planned further link the eastern part of the state to the rest of the state and the interstate highway system, I-87, I-42, and I-74. In the future, two more corridors have the potential added - US-17 between Williamston and South Carolina which would truly link most of the eastern cities together as opposed to having multiple spokes leaving the coast, and NC-24 between I-40 and Jacksonville.
I-66 in DC, if that counts as a state for this purpose.
Also, I-78 in New York.
A special case: The eastern I-86's brief trip back into PA near Waverly, NY.
In the days before I-69, I-24 in Kentucky would have counted.
Possibly I-49 in Texas in the far future?
Quote from: Revive 755 on December 19, 2019, 06:37:58 PM
In the days before I-69, I-24 in Kentucky would have counted.
Possibly I-49 in Texas in the far future?
Probably not. They plan to connect I-369 to I-49 eventually.
I-86 in Pennsylvania
Quote from: US 89 on December 19, 2019, 11:40:57 PM
I-86 in Pennsylvania
It's western terminus is at I-90 just west of the NY/PA border.
Quote from: ozarkman417 on December 20, 2019, 12:23:27 AM
Quote from: US 89 on December 19, 2019, 11:40:57 PM
I-86 in Pennsylvania
It's western terminus is at I-90 just west of the NY/PA border.
He's referring to the other I-86 segment in PA, in South Waverly.
If we can count sections, then I-49 southeast of Fort Smith would count, but not for long.
I-587 in NY (doesn't officially connect to its parent)
Quote from: ozarkman417 on December 20, 2019, 12:36:12 AM
If we can count sections, then I-49 southeast of Fort Smith would count, but not for long.
That's not an interstate highway. It's a freeway built to interstate standards ready to accommodate a future designation, but since it does not connect to any interstates it cannot be signed.
Technically, I-99 in PA...stops short of I-70/76 at it's south end and stops short of I-80 on it's north end...
Historically speaking, I-80 in NV did not connect to any other Interstate until I-580 was designated recently (they probably still call that US 395, though).
I-580 in Nevada has been around for over 40 years now, even though it wasn't signed until 2012.
Back to topic: I-95/I-495 District of Columbia :bigass:
Since we're not counting business Interstates, 585 in Spartanburg. If I'm not mistaken, I-520 in SC used to not link up with I-20 until a decade ago.
Honorable mention: The isolated complex of I-2, I-69E, and I-69C that meet each other but not any other Interstate in Texas.
Quote from: Henry on December 20, 2019, 10:05:32 AM
Historically speaking, I-80 in NV did not connect to any other Interstate until I-580 was designated recently (they probably still call that US 395, though).
Going much further back, I-15 did not connect to any other interstate in Nevada until I-515 and I-215 were designated.
Quote from: index on December 20, 2019, 10:39:21 AM
Since we're not counting business Interstates, 585 in Spartanburg. If I'm not mistaken, I-520 in SC used to not link up with I-20 until a decade ago.
I-585 did originally connect with I-85 when it ran straight thru Spartanburg, but since it was relocated in the 90s, it doesn't need connect.
You're correct about I-520, the final piece linking it to I-20 in South Carolina opened in the early 2000s.
Quote from: Some one on December 19, 2019, 07:58:52 PM
Quote from: Revive 755 on December 19, 2019, 06:37:58 PM
In the days before I-69, I-24 in Kentucky would have counted.
Possibly I-49 in Texas in the far future?
Probably not. They plan to connect I-369 to I-49 eventually.
I-49 will only have a few miles of road in Texas, up near the corner and far away from I-369
Quote from: debragga on December 20, 2019, 10:09:53 PM
Quote from: Some one on December 19, 2019, 07:58:52 PM
Quote from: Revive 755 on December 19, 2019, 06:37:58 PM
In the days before I-69, I-24 in Kentucky would have counted.
Possibly I-49 in Texas in the far future?
Probably not. They plan to connect I-369 to I-49 eventually.
I-49 will only have a few miles of road in Texas, up near the corner and far away from I-369
If I-369 is extended further north to meet I-49, it would all be in Texas.
I-369 currently is away from the I-49 location, in order to connect, a new location freeway would need to be built between I-30 and the future location of I-49.
I-90 in Idaho
I-535 in Wisconsin
I-72 in Missouri
Quote from: Brandon on December 20, 2019, 11:03:03 AM
Going much further back, I-15 did not connect to any other interstate in Nevada until I-515 and I-215 were designated.
This means that before 1978 (when I-580 was first assigned, even though not signed until 2012) any Interstate entering Nevada didn't connect to any other Interstate :bigass:. This continues to some extent, as the I-11/I-15/I-215/I-515 and I-80/I-580 systems don't intersect each other in the state. Until I-11 is extended to Reno in the far future...
Quote from: CNGL-Leudimin on December 21, 2019, 02:35:31 PM
Until I-11 is extended to Reno in the far future...
I-11 won't make it to Reno in our lifetimes. There's just no need to upgrade a road that carries 4000 cars a day to a full interstate.
Quote from: CNGL-Leudimin on December 21, 2019, 02:35:31 PM
Quote from: Brandon on December 20, 2019, 11:03:03 AM
Going much further back, I-15 did not connect to any other interstate in Nevada until I-515 and I-215 were designated.
This means that before 1978 (when I-580 was first assigned, even though not signed until 2012) any Interstate entering Nevada didn't connect to any other Interstate :bigass:. This continues to some extent, as the I-11/I-15/I-215/I-515 and I-80/I-580 systems don't intersect each other in the state. Until I-11 is extended to Reno in the far future...
If this is how it works, then I'll say I-95 in Maine.
Quote from: US 89 on December 21, 2019, 04:00:27 PM
Quote from: CNGL-Leudimin on December 21, 2019, 02:35:31 PM
Until I-11 is extended to Reno in the far future...
I-11 won't make it to Reno in our lifetimes. There's just no need to upgrade a road that carries 4000 cars a day to a full interstate.
Tell that to FritzOwl.
I-684 in CT. It don't even connect with any other road in the state, and probably is the only interstate without an interchange within a single state.
Quote from: Ben114 on December 21, 2019, 10:50:06 PM
Quote from: CNGL-Leudimin on December 21, 2019, 02:35:31 PM
Quote from: Brandon on December 20, 2019, 11:03:03 AM
Going much further back, I-15 did not connect to any other interstate in Nevada until I-515 and I-215 were designated.
This means that before 1978 (when I-580 was first assigned, even though not signed until 2012) any Interstate entering Nevada didn't connect to any other Interstate :bigass:. This continues to some extent, as the I-11/I-15/I-215/I-515 and I-80/I-580 systems don't intersect each other in the state. Until I-11 is extended to Reno in the far future...
If this is how it works, then I'll say I-95 in Maine.
For 2di's whose offspring don't meet any routes other than their parent, the same is also true for I-95 in RI and DE, I-10 in MS and I-70 in WV.
I remember before I-40 was completed in NC, I-95 had no interstate junctions at all. Pretty soon it will have plenty more as I-795 and I-74 both were added this century already, plus you have pending I-87, I-587, I-42, and two I-295 hook ups being NC loves to upgrade US route freeways to interstate standards minus the expectant child near Fayetteville built to be one in its plans from scratch.
^
Quote from: sprjus4 on December 19, 2019, 06:30:54 PM
Interestingly enough, I-95 in North Carolina did not connect with any interstate highways until 1990 when I-40 was extended from Raleigh to I-95. Today, it connects to 4 interstate highways, I-40 built in 1990, I-795 built in 2003, I-295 built in 2005, and I-74 built in 2007, and at least 2 more connections are planned in the future, I-87 where the existing US-64 / I-95 junction is, and the southern terminus of I-295 currently under construction. When US-70 is upgraded to I-42 around the I-95 vicinity, a direct interchange may be constructed, making a 3rd addition. I-587 will be designated between Raleigh and Greenville in the future along US-264 as well, but that would overlap I-795 around the I-95 vicinity, not being a separate facility.
Quote from: roadman65 on December 23, 2019, 10:00:39 AM
I-684 in CT. It don't even connect with any other road in the state, and probably is the only interstate without an interchange within a single state.
yeah, first post i got that one.
Quote from: roadman65 on December 23, 2019, 10:00:39 AM
I-684 in CT. It don't even connect with any other road in the state, and probably is the only interstate without an interchange within a single state.
I-95/495 in DC: "Am I a joke to you?"
(technically DC isn't a state, but whatever)