One exit for two or more routes that are not multiplexed

[frankenroad]

Exit 181 of I-75 in Bowling Green, OH.  OH-64 goes only west from the interchange, and OH-105 goes only east.   Not sure if the official end/begin points of the two routes is on the bridge over 75, or at one set of ramps (actually roundabouts), or if each route ends short of 75 and the bridge is no-mans land.

[hbelkins]

Similar to the original example, US 62/US 45 at I-24 in Paducah.

And the KY 70/KY 90 Cave City exit on I-65. KY 70 crosses the interstate; KY 90 ends at KY 70 adjacent to the interchange. It's not posted as "To KY 90."

Formerly, the KY 205/KY 191 interchange (Exit 57) on the Mountain Parkway. Signed for both routes; the old EB exit ramp emptied onto KY 205 and the WB ramp onto KY 191. The routes were not concurrent through the interchange but began a concurrency just north.

With the four-laning of the Mountain Parkway, all ramps now empty onto a realigned KY 205, which is the through route, and it's signed "To KY 191" now.

Similarly, Exit 60 (westbound only) was for KY 134/KY 191. It emptied onto KY 134, which ended nearby at KY 191. A new exit is being built that will provide access to KY 191. Not sure how it will be signed. Probably KY 191/To KY 134.

[DandyDan]

2 in Nebraska off of I-80:
1. US 77 and L55-X on the NE edge of Lincoln.  US 77 goes north, while L55-X goes south.
2. NE 11 goes north towards Wood River, while S-40D goes south towards Prosser.

[CoreySamson]

One near me is TX-288 at FM 523 and CR 44 in Angleton. Strangely enough, both roads share the same southbound exit, but they get separate northbound exits, which is odd.

[Big John]

WI 147 and County Z off I-43 by Maribel WI.

[cwf1701]

I-75 Exit 50 Signed for M-5 (Grand River), it is the exit for Ford Field, Fox Theatre, Little Caeser arena, and Comerica Park. All are located at M-1 (Woodward).

[WNYroadgeek]

If I'm reading this right, then I-290 Exit 6 should qualify (though it should be noted that westbound traffic bound for NY 240 must use NY 324 and eastbound traffic bound for NY 324 must use NY 240).

[US 89]

Exit 91 on I-70 in Utah goes to SR 72 south and SR 10 north. The two really should be one route.

I-15 exit 222 used to be another - SR 28 went south, while SR 41 went north. In that case 28 was extended to absorb 41.

[roadman65]

Exit 31 on I-4 in Lakeland, FL. 

FL 539 goes south on Kathleen Road and County Road 35A goes north on Kathleen.  Though FDOT does not sign CR 35A on the guide signs.

[stevashe]

I-5 at WA 411 and WA 504 since both of those routes begin/end at the interchange.

[TheStranger]

There were some California examples brought up earlier, so adding a few more:

I-280 at I-880/Route 17, which was not originally an example of this until the redesignation of the San Jose-Oakland segment of what had been Route 17 (the Nimitz Freeway).

I-580 at I-980/Route 24, also similarly formerly a singular route with one number until the early 1980s.

[TheGrassGuy]

First example I could think of was Exits 49A and B on I-78 east. (NJ-124 and NJ-82)

[michravera]

I noticed this one exit on US 35 in Ohio is for US 22 and 62.  But US 22 and 62 are not multiplexed.  OH 3 and US 22 are interchangeable since they are multiplexed.  But neither counts as a third route because of the multiplex. 

https://goo.gl/maps/HFf5LjUc8cMgNog46

The route numbers have to be signed on the exit.  Saying there's another route nearby doesn't count.  Route numbers labelled with 'To' are not directly served by the interchange and don't count.  And the route has to cross the freeway.  Using routes that parallel the freeway don't count.  No secondary routes either.  Just trying to avoid too many examples.

So any other examples?

Well, of course, there's the "Oak Park" interchange on EB US-50 in Sacramento that signs CASR 99 south an CASR-51/Bus-80 North/East.

In and near Mountain View, CA, CASR-237, CASR-85, and US-101 each have exits signed for the other two, if I am not mistaken.

They keep trying to fix or eliminate the dual exit, but I-880, CASR-17, I-280, and CASR-85 all come together near a point and there are several exits from each signed for two or three of the others.

Of course, near San Jose, NB US-101 has a dual exit for I-280 and I-680, both of which start or end at US-101 and BOTH are signed as "North".

I-5 and CASR-14 may have a concurrency that disqualifies it, but there are several ramps that are signed for both.

I-210 and I-405 and I-5 come together in a jumbled mess near Santa Clarita, CA and there may be exits from I-5 signed for both (and maybe other combinations as well).

I am pretty sure that EB I-80 in Reno has signs for both SB I-580 and NB US-395 on the same exit.

If I remember right, I-405 has a dual exit for CASR-110 and for I-110, if that counts.

I would have to look them up, but, in and near Las Vegas, NVDot likes to use C/D ramps and might have a dozen ramps with the exits thereto signed for multiple numbered routes on many of them.

[TheStranger]

Well, of course, there's the "Oak Park" interchange on EB US-50 in Sacramento that signs CASR 99 south an CASR-51/Bus-80 North/East.

Since 51 has never been signed, it's essentially Business 80 East/99 South.  Not sure if it completely counts as 99 is (silently) concurrent with 50 west of there (and until 2016-2017, so was Business 80).

I-210 and I-405 and I-5 come together in a jumbled mess near Santa Clarita, CA and there may be exits from I-5 signed for both (and maybe other combinations as well).

I don't think any of the 210/5 and 405/5 ramps are connected to each other, at least from when I was last in that area.  In fact, there is one exit on 5 between 210 and 405.

I am pretty sure that EB I-80 in Reno has signs for both SB I-580 and NB US-395 on the same exit.

580/395 are concurrent south of 80 so that wouldn't count.

If I remember right, I-405 has a dual exit for CASR-110 and for I-110, if that counts.

Nope, that is actually...

US 101 in the Four-Level (where I-110 is fully signed for the southbound Harbor Freeway, with state route 110 only referring to the Arroyo Seco segment)

and

I-10 south of Staples Center (where the northbound Harbor Freeway is signed for state route 110, and southbound for I-110)

However, I don't know if either one counts as State Route 110 and I-110 are one single-numbered route from San Pedro to Pasadena.  This is also why I'm not sure the transition of I-15 from Interstate to state route at I-8 in San Diego would qualify either.

On the other hand, I THINK the 405/110 junction involves some signage for Route 91 east.

[dkblake]

On I-89, Exit 14 is US 2/VT 117 and Exit 20 is US 7/VT 207. 14 exits onto US 2 but VT 117 begins right near the exit, while 20 exits onto VT 207 but the road ends right near the exit. It's interesting because, if I remember correctly, VT between White River Junction and Montpelier is careful about signing Route X TO Route Y. 

[Bickendan]

Former California example: I-10 at I-210/CA 57.

[JasonOfORoads]

OR-217 Exit 2A serves both OR-8 and OR-10. OR-10 used to end at OR-8 in downtown Beaverton until 1982, when it was extended westward along OR-208 to end at OR-219.
https://goo.gl/maps/WMiWmkRxpdii6sdv6

I-5 Exit 271 serves OR-214 and OR-219, both of which end at the interchange.
https://goo.gl/maps/qCjZnk9qmo1xDPir9

[roadfro]

The only Nevada examples I could think of:

*I-215 exit 1 is marked for I-515 north and I-11 south (both directions also carry both directions of US 93 & US 95). 515 becomes 11 at the 215 interchange.
*I-11 exit 23/I-515 exit 23 (formerly signed 62) is marked for I-215 west and SR 564 west. 215 ends at the interchange and can continue to where 564 begins.
*I-15 exit 33 northbound is currently marked for SR 160 and I-215/CR 215. This is more of a collector/distributor situation, where SR 160 is functionally a separate interchange from the 215...In the southbound direction, CR 215 west, I-215 east, and SR 160 are three separate exits.

[Road Hog]

Might as well not include any in MO that involved the lettered routes, they are going to be everywhere. A couple that don't involve them include MO 158 and US 160 at US 67, as well as MO 376 and MO 76 on MO 76 (due to the structure of the routing, I don't know if that would count as an exit).

I was about to say, these are everywhere with lettered routes in MO.

The main one in AR that springs to mind is Exit 16 off of US 67 in Cabot (the "Heber Exit") where AR 5, AR 321 and AR 367 all spring from. The reality is that all 3 highways derive from an intersection about 100 feet east of the freeway interchange.

[OracleUsr]

NC used to have one.  I-40 at I-26/240 (Exit 46A-B eastbound) until they extended I-26 past the interchange.  I guess technically since it's mostly future, it still counts

[ran4sh]

There's still I-40 at I-540 and Toll NC 540, if you count those as two routes.

[Bruce]

Exit 189 on I-5 in Everett, WA has three terminating state routes: SR 99, SR 526, and SR 527.

Both ends of I-405 in WA also apply since the freeway continues on as SR 518 on the south end and SR 525 on the north end.

[Road Hog]

SH 5 and FM 902 at US 75 in Howe, TX.

[plain]

A maybe involving secondary routes in Chesterfield County, VA: Exit 58 on I-95 (SR 620 and 746), though the exit is split into B&A on the southbound side

[Mark68]

I'll try Colorado...

I-25:

Exit 50 in Walsenburg: CO-10 E/US 160 W (Only signed for CO 10 because US 160 is signed on either end of the I-25 BL)
Exit 101 in Pueblo: CO-47 E/US 50 W
Exit 184 in Castle Rock: CO-86 E/US 85 N
Exit 201 in Denver: CO-30 E/US 285 S
Exit 216B in Denver: I-76 W/CO-224

I-70:

Exit 171 near Avon: US 6 E/US 24 W
Exit 205 in Silverthorne: CO-9 N/US 6 E
Exit 316 in Byers: US 36 E/(unsigned from I-70) CO-36 W

US 50 in Pueblo has an interchange with CO-47 W & CO-96 E (different interchange than the I-25 one listed above)

Bonus:

Near Empower Field in Denver, US 287 exits itself (SB 287 exits from SB Federal Blvd to EB Colfax Ave & NB 287 exits from WB Colfax Ave to NB Federal Blvd) but also meets CO-88 south of the interchange (on Federal) and US 40 & I-70 BL continue as a multiplex west and east (also multiplexed with US 287) of the interchange.