Highway families where you've been on the 3-digit route but not the 2-digit one?

[Kacie Jane]

Hopefully the title is clear.  I'm honestly not sure if I qualify myself, but what made me think of this was the "most recent first time" thread, where the most recent interstate I've driven on for the first time is I-275 in Tampa.  I don't have any memory of being on I-75 anywhere, but looking at a map, it's likely I have a mile or so crossing into Detroit from Windsor. (I may also have a portion in Cincinnati, although probably not; I think we took I-71 to US 50.)

Even opening it up to US routes, I'm not sure where I might have another candidate, but I thought it might make an interesting thread.  Feel free to include close calls like mine (either where you have just a tiny bit of the parent like my example, or where you have a completely unrelated portion of the parent like my example).

[roadman65]

I almost did it and actually did for a day.  I drove I-196 in Michigan, but the next day I was actually on the parent when I drove I-69 around Lansing which concurs with it for a few miles..  However, I did not drive independent I-96 but for the sake of this I imagine it counts as being on after day one.

[Avalanchez71]

I was on US 666 but not US 66.

[CtrlAltDel]

Well, I've been on I-270 in the Saint Louis area, without ever having been on I-70 anywhere near there. That's the best I got, though, since I vastly prefer 2dis to 3dis in my travel planning.

[iBallasticwolf2]

I can't really think of anything for myself. I will be travelling on I-376 in Pittsburgh later this summer but not I-76. That will count in the future.

[Sam]

I've been on I-278 in NY, but never on I-78 in NY I was on I-78 in PA once but i don't consider them related.

I'm not sure if the section of US 29 I was on in North Carolina is I-785 yet, but I've never been on I-85.

[Takumi]

I've been on US 322, 422, and 522, but not US 22. I know for sure I've been on US 340, but I don't know if I've been on US 40 or not. Certainly not as a driver.

[vdeane]

I've been on I-270 in Maryland but never on any part of I-70.

Historically:
-The Rochester I-x90 routes before I-90 (back when I was REALLY little)
-I-278 before I-78
-I-476 before I-76 (VERY briefly; only a couple hours, really)

[Duke87]

Offhand, I've been on US 191 but never US 91. I've also been on US 400 but never US 0.

I can definitively say I don't have any interstate examples - there are only three 2dis with children that I've never traveled a single inch of (I-29, I-45, and I-82), and I've never been on any of the children of either.

[kkt]

I-238!

Oh, okay.  Um.  US 195 and 395, but not US 95.

[Eth]

Nothing for the Interstates.

For US routes, I've definitely been on 522, and I've been on at least one (maybe two) out of 222, 322, and 422 somewhere in Pennsylvania. I have not, however, been on US 22.

Close calls: I've been on US 202 and 206, and I've been on less than two miles each of US 2 and 6 (the latter via concurrency with I-95 in Providence). I think 220/20 ends up in this category too.

[Zeffy]

US 202 and US 206 - I've never touched US 2 or 6. I-287 - I've never used I-87 either.

[corco]

I've been on I-676 but not the eastern I-76. I think that's my only one.

[SteveG1988]

Until 2015, US 206 but not US6. US 322 but not 22.

Unique case, until 2015 in the semi i also never went on i78 other than the NJ turnpike Extension.

[cl94]

Never been on US 2 (that I can remember), but I've used US 202 several times to cross the Hudson

[Big John]

Been on I-279 but not I-79

[jeffandnicole]

US 202 but not 2
US 206 but not 6
I-287 but not 87

[Thing 342]

I-278, but not I-78.
I-459, but not I-59
I-465, but not I-65.

Never been on the parents of US 340, 522, 220, 180, 206, 202, and possibly a few others.

[akotchi]

I have been on U.S. 191, but not on U.S. 91; U.S. 163, but not U.S. 63; U.S. 220, but not U.S. 20; U.S. 278, but not U.S. 78.

Nothing I can think of for the Interstates.

[jwolfer]

I have been on US 231 but not 31. I was on the former 31 inside the Indianapolis beltway( Meridian St?)

[Zeffy]

US 202 but not 2
US 206 but not 6
I-287 but not 87

US 202 and US 206 - I've never touched US 2 or 6. I-287 - I've never used I-87 either.

We're too similar. 

[jp the roadgeek]

US 202 & 302 but not US 2

[Ian]

The only one I can think of is US 441, which I've traveled between the West Palm Beach area out to Lake Okeechobee in southern Florida, but never on US 41.

[hotdogPi]

For me:
US 202
I-278
I-676

[jeffandnicole]

US 202 but not 2
US 206 but not 6
I-287 but not 87

US 202 and US 206 - I've never touched US 2 or 6. I-287 - I've never used I-87 either.

We're too similar. 

Oh yeah!  LOL