Interstates that do not interchange with other interstates at all.

[cjk374]

I was thinking about asking a few weeks ago about US highways that didn't have an interchange with an interstate. But then I looked at my local US highway...US 80 (aka the Dixie-Overland Highway). I counted many places where it didn't interchange with I-20 because, well....it just wasn't necessary. That includes 2 places between Shreveport & Dixie Inn (exit 44) where I-20 flies over US 79/80 (which happens to be a 4-lane divided road).

Another example is where US 79/80 fly over the West end of I-220. There is no exit due to the fact that there is no room for ramps because it is so close to the I-20 exit ramps.

So that got me thinking: is there anywhere that 2 interstates cross, one flying over the other, and there are absolutely no ramps connecting the two? Perhaps because of space limitations?

[roadman65]

I know that I-42 when it gets built, it will not interchange with I-95.

I-57 and I-294 in IL, but that is now partially changed.

[1995hoo]

Infamously, for now at least, I-95 and I-276.

If you consider the Jersey Turnpike's extension over to Pennsylvania to be I-95, then I-95 and I-295 in New Jersey qualify.

[Jmiles32]

Two in the Baltimore area are I-895@I-195 and I-895@I-95(just north of the harbor tunnels).

[jp the roadgeek]

Until recently, you had I-84 and I-87.   And of course, there's I-587, which doesn't even connect to another interstate. 

I-90 and I-391 in Chicopee, MA. 

[LM117]

I know that I-42 when it gets built, it will not interchange with I-95.

I wouldn't be so quick to jump the gun. There's a feasibility study currently underway for that stretch of US-70, which includes a possible direct I-42/I-95 interhange. I seriously doubt NCDOT would want to keep a semi-Breezewood.

[froggie]

Amongst others...

- I-81/I-476 on the southwest side of Scranton, PA
- I-78/I-476 near Allentown, PA
- If future plans come to fruition, I-22/I-422 outside Birmingham, AL

[webny99]

When I read the topic title, I took it literally, not in reference to individual crossings.

With that said, is something like this, I-271 and I-80 near Cleveland, what you're looking for? They both have interchanges with other interstates, at other points along their respective corridors, but definitely not at that particular crossing.

US highway crossings with no exit tend to be much more common. Here's a double-whammie where both US 20 and US 62 cross the Thruway inside half a mile and neither gets an exit. I guess a US highway - toll road crossing is the ultimate example, at least in terms of frequency.

[webny99]

- I-81/I-476 on the southwest side of Scranton, PA

Of course! 
Knew I was forgetting at least one obvious PA example.

[TheHighwayMan3561]

I-80/90 and I-475 outside Toledo.

[ilpt4u]

Does Breezewood count? There are ramps and US 30, but no direct Turnpike to Freeway Ramps (as everyone around these parts knows)

[cjk374]

Does Breezewood count? There are ramps and US 30, but no direct Turnpike to Freeway Ramps (as everyone around these parts knows)

I have only read about Breezewood. I have seen pictures...and from what I have seen, I don't want to count it because it isn't really a freeway-grade highway. That is only my opinion...I will cede the official decision to those of you who are more "in the know" about this area.

[hbelkins]

Technically, I-99 Pennsylvania doesn't have any interchanges with other interstates.

[ftballfan]

Years ago, the Ohio Turnpike didn't have a direct connection to I-75 or I-77. Both have been remedied.

[mvak36]

Technically, I-99 Pennsylvania doesn't have any interchanges with other interstates.

Yes, although I remember reading somewhere that they want to make the I-80 interchange a free-flowing one eventually, pending funding. They might have applied for a federal grant too, IIRC.

[RobbieL2415]

I-587 (NY)

[Eth]

I don't think I-585 has been mentioned yet. It has an interchange with BL-85 (former I-85), but none with any current mainline Interstate.

[webny99]

I was under the impression that an actual crossing had to exist.

I-587 (and I-585) don't even have crossings where you'd expect an exit for another interstate. As such, they are really part of a separate discussion about interstates that don't connect to the system at all. Ditto for I-99.

[texaskdog]

Does Breezewood count? There are ramps and US 30, but no direct Turnpike to Freeway Ramps (as everyone around these parts knows)

A road that does not intersect itself

[ilpt4u]

Does Breezewood count? There are ramps and US 30, but no direct Turnpike to Freeway Ramps (as everyone around these parts knows)

A road that does not intersect itself

One could argue that Freeway I-70 and the Turnpike are separate Roadways...but then again so would any Turn On/Turn Off arrangement.

Point taken. Breezewood is a no-go!

[hotdogPi]

I was under the impression that an actual crossing had to exist.

I-587 (and I-585) don't even have crossings where you'd expect an exit for another interstate. As such, they are really part of a separate discussion about interstates that don't connect to the system at all. Ditto for I-99.

According to the content of the OP, yes. The title is asking something completely different, and it would include I-99, I-585, and I-587.

[Beltway]

Technically, I-99 Pennsylvania doesn't have any interchanges with other interstates.

Literally, no direct interchanges with other Interstates.

The US-15 / Future I-99 section does, but that is not signed as I-99 yet.

Technically, I-99 Pennsylvania doesn't have any interchanges with other interstates.

Yes, although I remember reading somewhere that they want to make the I-80 interchange a free-flowing one eventually, pending funding. They might have applied for a federal grant too, IIRC.

I-99 ends about 0.5 mile south of I-80, and PA-26 makes the connection to I-80.  The two highways I-99 and PA-26 connect seamlessly.

[Takumi]

I-81 and I-76.

[cl94]

I-80/90 and I-475 near Toledo. There's a signed Breezewood requiring about a mile on local streets.

I-22 and I-422 may not intersect directly, but I-222 will be a glorified quadrant road, so it'll be like a toll road interchange minus the toll booth.

[cjk374]

I was under the impression that an actual crossing had to exist.

I-587 (and I-585) don't even have crossings where you'd expect an exit for another interstate. As such, they are really part of a separate discussion about interstates that don't connect to the system at all. Ditto for I-99.

According to the content of the OP, yes. The title is asking something completely different, and it would include I-99, I-585, and I-587.

I will say this though: I now understand much better than before what the big deal is with these interstates that I have been reading about here for so many years. Now I-99 is an even bigger form of evil (in my mind) than before. I didn't know there was such a thing as interstates out in the middle of nowhere in the interstate universe. Mind...blown.