Interstates that meet no other interstates in a state.

[SteveG1988]

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?

[Max Rockatansky]

I-15 in Arizona.

[ftballfan]

I-275 in Indiana
I-81 in West Virginia
I-72 in Missouri

[X99]

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.

[bassoon1986]

I-59 in GA



iPhone

[sprjus4]

I-59 in GA



iPhone

The northern terminus is at I-24, which that small sliver is in Georgia.

[oscar]

I-129 in Nebraska.

[Road Hog]

I-155 in Tennessee (until I-69 is finished).

[Jim]

First I thought of is I-95 NH.

[7/8]

I-90 in Idaho

[Konza]

I-535 in Wisconsin.

[sprjus4]

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.

[Crown Victoria]

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. 

[Revive 755]

In the days before I-69, I-24 in Kentucky would have counted.

Possibly I-49 in Texas in the far future?

[Some one]

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.

[US 89]

I-86 in Pennsylvania

[ozarkman417]

I-86 in Pennsylvania

It's western terminus is at I-90 just west of the NY/PA border.

[oscar]

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.

[ozarkman417]

If we can count sections, then I-49 southeast of Fort Smith would count, but not for long.

[jp the roadgeek]

I-587 in NY (doesn't officially connect to its parent)

[sprjus4]

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.

[jemacedo9]

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...

[Henry]

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).

[CNGL-Leudimin]

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

[index]

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.