Are there any interstates that intersect their US highway counterpart?

[OCGuy81]

The only exceptions I can think of is I-41 and I-74, both sharing pavement with their US highway counterparts.

Is there any other place where an Interstate even has an exit for its US highway counterpart?  Somewhere in the middle of the country perhaps?

[roadman65]

US 69 and I-69?

[silverback1065]

The only exceptions I can think of is I-41 and I-74, both sharing pavement with their US highway counterparts.

Is there any other place where an Interstate even has an exit for its US highway counterpart?  Somewhere in the middle of the country perhaps?

This is or at least WAS supposed to never happen, but I think those are the only examples that there are right now.  It's hard to stick to the rules now in some areas, you have to use conflicting numbers.

[OCGuy81]

US 69 and I-69?

Once they complete I-69 in Texas, that will happen, won't it?

I'll bet an interstate meeting its state highway counterpart is more common.

Happens a lot in California.  110, 15, 210, 238.

[hbelkins]

I'll bet an interstate meeting its state highway counterpart is more common.

Happens a lot in California.  110, 15, 210, 238.

In Indiana as well, as I-64 has an exit for IN 64 west of the Louisville area.

[jp the roadgeek]

I'll bet an interstate meeting its state highway counterpart is more common.

Happens a lot in California.  110, 15, 210, 238.

In Indiana as well, as I-64 has an exit for IN 64 west of the Louisville area.

And on NY 7 there's an exit for I-787 and NY 787

[roadfro]

I'll bet an interstate meeting its state highway counterpart is more common.

Happens a lot in California.  110, 15, 210, 238.

Your California examples don't really count. All these interstates and their same-numbered state routes are one and the same highway legislatively. 15, 110 and 210 arestate route extensions of the interstate highway–there is no interchange or exit between one and the other.

[txstateends]

US 69 and I-69?

Once they complete I-69 in Texas, that will happen, won't it?

Yes, in or near Lufkin, depending on the routing. 

I am probably in the minority about the alignment needing to go further around to the east when it passes Lufkin, instead of what sounds like the more favored route; overlapped with US 59-US 69-Loop 287.  Overlapping the Loop will not give something that needs width (like an Interstate) enough room.

It will be a mess amongst locals, I'm very sure.  I've been around family from that area, and people that live around there usually refer to US 69 as just '69' as there (up to now) haven't been road-numbering duplicates crossing or nearby.  When the time comes, there will have to be much "Oh, I meant...." additions to conversation when the sentence originally starts out as "Go down (or up) 69...." .  I don't personally like that Interstates and US routes are being allowed to have same-number existences very close, crossing, or overlapped.  Fine to have I-69 and US 69, but not like they will soon be.

(Yeah, I know, the 'I-49 across the state from US 49 in Arkansas' thing has been an issue, but to me, they're far enough apart to not bring on a noticeable confusion factor.)

[bing101]

US 69 and I-69?

Once they complete I-69 in Texas, that will happen, won't it?

I'll bet an interstate meeting its state highway counterpart is more common.

Happens a lot in California.  110, 15, 210, 238.

Nevada example is CC-215 and I-215.

[cpzilliacus]

No Maryland U.S. route number overlaps its Interstates, so the answer is none.

But plenty of its state numbered system has route numbers that are the same as the Interstates, I cannot think of any that overlap or touch other (but MDROADS lists one below).

Examples (probably not all-inclusive):

68
70
95 (but state route decommissioned)
97
195
270
295
370
495
795 (according to MDROADS, this one does touch its Interstate counterpart, though it is unsigned).
895 (state route decommissioned)

[mrsman]

I'll bet an interstate meeting its state highway counterpart is more common.

Happens a lot in California.  110, 15, 210, 238.

Your California examples don't really count. All these interstates and their same-numbered state routes are one and the same highway legislatively. 15, 110 and 210 arestate route extensions of the interstate highway–there is no interchange or exit between one and the other.

And in fact, CA state law prohibits two different highways having the same number.  This led to a lot of renumberings over the years.  For instance, Manchester Ave - Firestone Blvd. in South Los Angeles was once CA-10, but was renumbered to CA-42 when I-10 was introduced to Calif.  (CA-42 now decommissioned). 

[NE2]

And in fact, CA state law prohibits two different highways having the same number.

No it doesn't. I-80 and I-80 Biz.

[The Nature Boy]

And in fact, CA state law prohibits two different highways having the same number.

No it doesn't. I-80 and I-80 Biz.

Is that really highway number duplication though? I-80 biz is a branch of I-80.

[NE2]

Is that really highway number duplication though? I-80 biz is a branch of I-80.

Yes. The legislature specifically allowed SR 51 to be signed as I-80 Biz (just as they allowed signage to remain on the old U.S. Routes post-1964 until the Interstates were completed).

[roadfro]

I'll bet an interstate meeting its state highway counterpart is more common.

Happens a lot in California.  110, 15, 210, 238.

Nevada example is CC-215 and I-215.

Well, this is an Interstate and a county highway (not a state highway)... But, like the California routes listed, it's still not a valid example for the purposes of this thread because we are talking about one highway with a change in sign designation and not an junction between two separate highways with the same number.

And in fact, CA state law prohibits two different highways having the same number.

No it doesn't. I-80 and I-80 Biz.

Is that really highway number duplication though? I-80 biz is a branch of I-80.

In this case, California has a legislative route number system with no repeating route numbers, upon which some signed routes do not carry the same number as the legislative route. What is signed as I-80 Business through Sacramento carries legislative Route 50 (the US 50 portion) and Route 51 (the unsigned SR 51 portion). For this particular example, Route 51 is specifically stated, by code, to be signed as I-80 Business.

So ultimately, this one is a semantic issue on whether two routes with the same number meet or not. But it doesn't really count in the spirit of this thread though (unless you're going to count the junction of every business, alternate, bypass, etc. route with it's parent).