What's the Closest Interstate to you that you Have Never Been on Any of it?

[Beltway]

Supplementary

If by "supplementary" you mean "auxiliary", then...
This distinction matters less to me, living in Wichita, than it probably does to people in other regions.  I-135 is an almost-hundred-mile-long trunk route through farmland and is probably the third-most important highway in the state.  So it feels weird to think of it as a second-class route just because of its three-digit number.
Anyway, that was just a total aside.  Carry on, everyone...

I don't consider them to be "second class" just that in most cases they are auxiliary to mainline routes.

It used to be I-35W and it could be argued that depicted more prominence than I-135.

Same could be said for I-70S and I-270. Nothing second class about the route that connects I-70 to Washington.

I-476 (132 miles long) deserves a mainline route as it functions like an intercity route. It could be a second iteration of I-85.

[dantheman]

Mine are
2di: I-99. I think I-70 would barely be closer if the Baltimore segment had been built as planned.
3di: I-781. I had driven by the now-eastern end on US 11 a few times before it was built, but haven't been to Watertown since.

I will be moving in a couple of months. After that, I-781 will still win, but I-180 will become only a few miles further.

[jlam]

3di: I-180 WY (~40 mi)

I've since clinched both I-180 and I-225, my next-closest untraveled Interstate. My answer for this is now I-135 in Kansas at 412 miles away, followed very closely by the western I-86 at 413 miles away.

[davewiecking]

After years of careful consideration, I've concluded I've never been on I-581. Pretty sure I've never been on I-85.

[jp the roadgeek]

Having clinched I-587 in NY today, I can now confirm the closest stretch is I-195 RI/MA.  The 2DI remains the officially designated stretch of I-86 in NY east of I-81.

[pderocco]

I-27 south of Lubbock TX, 1069 road miles from home. That's from clinching I-25 and the tiny I-110 in El Paso.

[JayhawkCO]

I-27 south of Lubbock TX, 1069 road miles from home. That's from clinching I-25 and the tiny I-110 in El Paso.

Tough to clinch I-27 south of Lubbock at this point.

[kphoger]

I-27 south of Lubbock TX, 1069 road miles from home.

Tough to clinch I-27 south of Lubbock at this point.

Yeah, I've never been on I-27 south of Lubbock either...

[pderocco]

I-27 south of Lubbock TX, 1069 road miles from home.

Tough to clinch I-27 south of Lubbock at this point.

Yeah, I've never been on I-27 south of Lubbock either...

I-27 south of Lubbock TX, 1069 road miles from home. That's from clinching I-25 and the tiny I-110 in El Paso.

Tough to clinch I-27 south of Lubbock at this point.

Picky. I meant I-27 on the south side of Lubbock. I know it ends (for now) at 289.

[JayhawkCO]

I-27 south of Lubbock TX, 1069 road miles from home.

Tough to clinch I-27 south of Lubbock at this point.

Yeah, I've never been on I-27 south of Lubbock either...

I-27 south of Lubbock TX, 1069 road miles from home. That's from clinching I-25 and the tiny I-110 in El Paso.

Tough to clinch I-27 south of Lubbock at this point.

Picky. I meant I-27 on the south side of Lubbock. I know it ends (for now) at 289.

So, have you been on the other parts of I-27? I guess that's what I didn't understand.

[Declan127]

Probably I-78 (I live in Queens)
I've walked past the Rotary and over the pedestrian overpass but unless i ended up briefly touching the asphalt at the end of the last exit I don't think I've ever been on 78

[kphoger]

So, have you been on the other parts of I-27? I guess that's what I didn't understand.

Yeah, that's what confused me too, because this thread isn't about clinches.

Maybe he just meant that its southern endpoint is the point to which he measured?

[kphoger]

Looks like I never answered this one for myself.

The closest Interstate that I've never been on appears to be I-235 in Oklahoma City.  Surprisingly, considering I've taken probably five different routes through OKC, none of them has used I-235.

[pderocco]

I-27 south of Lubbock TX, 1069 road miles from home.

Tough to clinch I-27 south of Lubbock at this point.

Yeah, I've never been on I-27 south of Lubbock either...

I-27 south of Lubbock TX, 1069 road miles from home. That's from clinching I-25 and the tiny I-110 in El Paso.

Tough to clinch I-27 south of Lubbock at this point.

Picky. I meant I-27 on the south side of Lubbock. I know it ends (for now) at 289.

So, have you been on the other parts of I-27? I guess that's what I didn't understand.

No. None of it. The reference to "south of Lubbock" is to the distance I'd have to travel to get to some point on it. That's the closest point by road.

The answer would be the same, though, even if I had driven some of it, but that's not the question of this thread.

[JayhawkCO]

No. None of it. The reference to "south of Lubbock" is to the distance I'd have to travel to get to some point on it. That's the closest point by road.

The answer would be the same, though, even if I had driven some of it, but that's not the question of this thread.

Sure. The extra info just confused me.