Interstates that turn into a differently numbered state route

[bugo]

I-540 turns into OK 9 at the Arkansas/Oklahoma line near Fort Smith (duplexed with US 271).  Does this happen anywhere else?  Examples like I-440/AR 440 do not count because they have the same number.

[ap70621]

I-985 in GA runs concurrent with GA 365 & US 23, then I-985 suddenly ends and it is GA 356 & US 23 only so that kind of counts I guess.

[1995hoo]

At its eastern end, I-4 becomes FL-400 into Daytona Beach.

At its southern end, I-75's straight-thru movement puts you onto FL-924 (Gratigny Parkway); the other two movements at the same place put you onto FL-826.

I-264 used to become VA-44 at its eastern end, but the Interstate designation was later extended so that situation no longer exists.

[Mapmikey]

Virginia has I-564 which turns into VA 337.

North Carolina has I-795 which turns into (unsigned last time I was there) NC 581 CONN

South Carolina has I-585 which continues as SC 9 (and US 176)

Georgia's I-575 becomes GA 5

Florida's I-175 and I-375 both become FL state routes with different numbers...

Mapmikey

[hbelkins]

I-265 in Kentucky runs concurrently with KY 841 -- in fact, 841 was the original number for the various sections of the incomplete route before it was finished and became an interstate -- and on either end of the interstate designation, 841 continues.

[Arkansastravelguy]

Interstate 40 continues as NC 132 in Wilmington. I-587 continues as NY 28


iPhone

[Brandon]

Illinois:

I-474 continues past I-74 as IL-6.
I-88 continues past I-80 as IL-5 and IL-92 (which I-88 was concurrent with).
I-180 continues past IL-26 (which I-180 was concurrent with) as IL-71.
I-172 continues past US-24 as IL-336 (don't get me started on the IL-110 farce).
I-290 continues past I-90 (NW Twy) as IL-53 (which I-290 was concurrent with).

Unnumbered:
I-72 continues past I-57 as Church St/University Ave.
I-290 continues past I-90/94 (Circle Int) as Congress Pkwy.

[KEVIN_224]

Does this count?


This is at the eastern (northern?) end of I-290 where it meets I-495 in Massachusetts. The road leading to MA Route 85 was supposed to be I-290 continuing further along.

[PHLBOS]

In Wareham, MA; I-495 becomes MA 25 southeast of the I-195 interchange.  Yes, I'm aware of I-495 between MA 24 & I-195 was originally MA 25; but the current designations make such still count.

In Stony Ridge, OH (south of Toledo); I-280 becomes OH 420 south of the Ohio Turnpike (I-80/90).  Granted, OH 420 does not have limited-access; but it's still a divided highway.

Does this count?


This is at the eastern (northern?) end of I-290 where it meets I-495 in Massachusetts. The road leading to MA Route 85 was supposed to be I-290 continuing further along.

Since that short connector road to MA 85 itself has no public route number assigned to it; my answer would be No.  IIRC, that the connector road opened long after the proposal to extend I-290 beyond 495 was killed off. 

[oscar]

Interstate H-1 turns into HI 93 at its west end, and HI 72 at its east end.

Interstate H-2 picks up HI 99 just before H-2's north end.  HI 99 continues around Wahiawa after H-2 ends. 

Interstate H-201 turns into HI 78 (the old number for the Interstate part of that freeway) at its west end, though maps and signs make that unclear.

[freebrickproductions]

I-565 turns into AL 20 and the barely signed Alt. 72 west of I-65. Does it count?

[US71]

I-540 turns into OK 9 at the Arkansas/Oklahoma line near Fort Smith (duplexed with US 271).  Does this happen anywhere else?  Examples like I-440/AR 440 do not count because they have the same number.

540 ends at 271/253

I-49 south of Carthage technically turns into MO 59 at I-44 (49 duplexes with 44)

[TheStranger]

The two California examples:

I-880 to Route 17 in San Jose (17 of course formerly covering all of 880's route and a bit more)

I-980 to Route 24 in Oakland (980 was orignially proposed as the west extent of 24)

Technically, I-305 (according to the current FHWA definition) ends along Route 51 at the northeast edge of Midtown Sacramento, but it's not signed.

[kurumi]

I-691 becomes CT 66 at I-91 in Meriden, CT (reason: 691 designation replaced 66 on most, but not all, of the constructed freeway)

[kj3400]

I-370 in Gaithersburg turns into MD 200.

[Mr. Matté]

Wa

Thank you Artie Lange.

I-195 in NJ at its western end turns into Route 29 and at its eastern end turns into Route 138.

[Zeffy]

Doesn't I-70 technically turn into MD 122 in Baltimore, even though it ends at (as we all know) a parking lot?

In NJ, I-287 at it's southern end turns into NJ 440.

[jp the roadgeek]

(for now) I-86 becomes NY 17

[Big John]

Not sure if this counts, but I-39 ends at WI 29.  Staying straight on that freeway as NB US 51 also becomes concurrent as WB WI 29.

[WillWeaverRVA]

In terms of ramp and through movements, one could argue that I-195 in VA turns into VA 76, although I-195 actually exits onto itself and becomes VA 195 at VA 146.

I-264 became VA 44 at I-64 until the two routes were co-signed in the 1980s and VA 44 itself was decommissioned in 2001.

[rschen7754]

Wa

I-705 turns into WA 7.

[bassoon1986]

In Louisiana I-220 becomes LA 3132 at it's western terminus. I want to say it always did, meaning 220 at 20 didn't get built first and 3132 added later, or at least it was always in the plans to have 220 continue around sw Shreveport.

Also I-510 continues as LA 47 on both ends as it was the original highway and the interstate designation was added as it came to standard.


In Texas I-45 continues as TX 87 in Galveston, and
I-369 continues as TX loop 151 for now.

Mississippi has I-110 that continues as MS 67

[cl94]

I'd give a New York example, but I can't think of a single one. The state route always carries the same number as the 3DI. There are two (I-86 and I-587) that are honorable mentions, but they carry a concurrency with the continuing route for their entire length.

[jeffandnicole]

In NJ: I-76 becomes NJ 42.

We can probably say that NJ Turnpike I-95 becomes NJ Turnpike NJ 700, if you want to pay attention to a route number that's not posted along with saying that I-95 just starts/stops at Interchange 6.

[SSOWorld]

Not sure if this counts, but I-39 ends at WI 29.  Staying straight on that freeway as NB US 51 also becomes concurrent as WB WI 29.

Technically yes.  WIS 29 WB joins US-51 which came with I-39 to that point where the latter ended - WIS 29 EB turns off to the right. 

I-43 ends at US-41, but doesn't turn into another route.  On the other end, I-43 becomes WIS 81 after crossing I-90.

I-535 turns into a local street (Hammond Ave) in Superior and US-53 continues past the end of I-535 in Duluth (US-53 is concurrent with I-535 north of - WIS-35 (Coincidence? no?).

Then you have the potential US(I)-41 spiel at both ends...


In Minnesota,
I-394 ends at I-494 where US-12 "re-appears" and continues west. (Yeah that's not a state route, but still..)

I-35 turns into MN-61 north of Duluth (where US-61 used to be)

In Iowa,
I-380 is followed by IA 27 (being the Ave of the Saints) along with US-218 and the route continues past the south end by Iowa City.  On the north end US-218 contiues past the north end of I-380 in Waterloo (Yeah that's also not a state route, but still..)