Interstates isolated in their state

[Pete from Boston]

A few others not yet mentioned:

...

-I-95 in New Hampshire.

First one on the list!

The "barely serve their state" thread got me to thinking, I-95 in New Hampshire passes through without connecting to the "Interstate network" in the state, even though there are several other Interstates in the state (all of which are connected). 

I-99, to my thinking, connects to the network.  I realize that hair-splitting is at the core of any obsessive interest, but I guess I meant roads that have no direct or indirect interchange with another Interstate route.  76, for example, has an exit specifically signed for 99, and the roads actually cross.  For most people's purposes, they connect. 

[signalman]

I-99, to my thinking, connects to the network.  I realize that hair-splitting is at the core of any obsessive interest, but I guess I meant roads that have no direct or indirect interchange with another Interstate route.  76, for example, has an exit specifically signed for 99, and the roads actually cross.  For most people's purposes, they connect. 

I agree.  Pennsylvania is loaded with Breezwood type connections.  I-99 isn't unique in this regard.  If one is going to single out I-99, they might as well say that almost all of PA's interstates aren't connected.  I would say that I-99 connects to I-70/76; albeit indirectly.  I'd even go so far as to say that it connects to I-80.  The two lane segment of US 220 between its current northern terminus and I-80 isn't that far. 

[robbones]

Does I-540 enter Oklahoma?

No it ends at US 271 in Fort Smith

[Brandon]

I-27 and I-40 together in Texas.

[Grzrd]

A close call that depends on whether the OP's definition of "interstate network" is restricted to, in kurumi's terminology, "proper" interstates, or is expansive enough to include business routes, is I-585 in South Carolina.

[Zeffy]

As i said in the post before yours, it is a breezewood situation for now.

Wow, we were :05 milliseconds apart. I posted and the "new reply warning" didn't even pop up so I didn't actually see that you posted (I got off after posting).

And yeah, I know that I-99 has a Breezewood going on currently, but Pete from Boston pretty much echoed my feelings on the subject:

I-99, to my thinking, connects to the network.  I realize that hair-splitting is at the core of any obsessive interest, but I guess I meant roads that have no direct or indirect interchange with another Interstate route.  76, for example, has an exit specifically signed for 99, and the roads actually cross.  For most people's purposes, they connect. 

Yeah, it's a bit wonky you have to use US 220 Business to get to the Turnpike, but it's a short enough distance that I'd qualify it as, at the least an "indirect connection".

[hbelkins]

The PA Turnpike (I-76) and I-99 do NOT cross. I-99 ends at the exit to old US 220, just north of the turnpike. The road that crosses the turnpike is only US 220.

[NE2]

The PA Turnpike (I-76) and I-99 do NOT cross. I-99 ends at the exit to old US 220, just north of the turnpike. The road that crosses the turnpike is only US 220.

I-99 ends at the interchange that connects to I-76. Who cares where the inventoried end is?

[Pete from Boston]

The PA Turnpike (I-76) and I-99 do NOT cross. I-99 ends at the exit to old US 220, just north of the turnpike. The road that crosses the turnpike is only US 220.

I-99 ends at the interchange that connects to I-76. Who cares where the inventoried end is?

Yeah, I wasn't talking about technicalities, but rather clear examples (again, think I-95 in NH).  But whatever, I've taken as many thread liberties as anyone, so carry on. 

[StogieGuy7]

The "barely serve their state" thread got me to thinking, I-95 in New Hampshire passes through without connecting to the "Interstate network" in the state, even though there are several other in the state (all of which are connected). 

For one thing, while technically true about not connecting to other interstates, I-95 connects with NH-101 and the Spaulding Turnpike - each of which is a major highway within the state connecting the Merrimack Valley and Lakes Region (respectively) to the NH Seacoast.  And 101 connects I-93 and I-95, so it's not as if either one is truly 'isolated'.

As for that original thread, I'll post this there, but I'll add it here: I-95 absolutely serves New Hampshire, pretty much anyone who has ever lived in NH has driven on it multiple times and it's one of the busiest roads in the state. Heck, the New Hampshire Liquor Store on I-95 is the busiest such outlet in the state!  Much like I-95 in Delaware, I wouldn't count it.