Highways that exit themselves

[Verlanka]

I wonder why nobody has thought about just realigning 90 onto the Thruway, then having it take over the whole of the Berkshire Connector?

Probably because the designers thought I-90 should have a non-toll section in NY.

[SeriesE]

Northbound I-5, San Diego Freeway exits itself at I-5/I-405 onto I-405.
I-280 north at CA-1 north (19th Avenue) San Francisco
I-5 at I-580
I-10 in Downtown Los Angeles, twice. The through movements go to CA-60 (eastbound) or San Bernardino Freeway/US-101 (westbound)

[Thing 342]

VA-286 (Fairfax County Parkway) exits off itself eastbound at VA-289 (Franconia-Springfield Parkway).
DE-1 Northbound at US-13 in Bear.
I-264 eastbound at Waterside Drive, largely due to the interchange predating the interstate, IIRC.
US-13 SB at the start the Suffolk Southern Bypass, with the through route (US-58) no longer a freeway.

[cwf1701]

I-96 and M-5 at the I-275/I-696/M-5 interchange.

[webny99]

Westbound I-86/NY 17 at I-390

Hmm. I'm not sure I'd count that. It does look like an "exit", but it's just because of how the interchange is configured, it's not really exiting itself in the traditional sense of exiting onto a different roadway.

I wonder why nobody has thought about just realigning 90 onto the Thruway, then having it take over the whole of the Berkshire Connector?

Nope, nobody at all. It's only been discussed to death in the Northeast and Fictional Highways boards. 
I'm a major advocate - this should have been done yesterday. Current free I-90 can be renumbered as I-390 once I-83 (or I-99) makes it to Rochester!

[Roadgeekteen]

Westbound I-86/NY 17 at I-390

Hmm. I'm not sure I'd count that. It does look like an "exit", but it's just because of how the interchange is configured, it's not really exiting itself in the traditional sense of exiting onto a different roadway.

It looks like I-390 is the through route.

[Ketchup99]

Westbound I-86/NY 17 at I-390

Hmm. I'm not sure I'd count that. It does look like an "exit", but it's just because of how the interchange is configured, it's not really exiting itself in the traditional sense of exiting onto a different roadway.

I wonder why nobody has thought about just realigning 90 onto the Thruway, then having it take over the whole of the Berkshire Connector?

Nope, nobody at all. It's only been discussed to death in the Northeast and Fictional Highways boards. 
I'm a major advocate - this should have been done yesterday. Current free I-90 can be renumbered as I-390 once I-83 (or I-99) makes it to Rochester!

Since the fastest route is the free road, shouldn't that stay I-90? I'm not sure it needed to be built but since it was, one would think it deserves the I-90 designation.

[Roadgeekteen]

Westbound I-86/NY 17 at I-390

Hmm. I'm not sure I'd count that. It does look like an "exit", but it's just because of how the interchange is configured, it's not really exiting itself in the traditional sense of exiting onto a different roadway.

I wonder why nobody has thought about just realigning 90 onto the Thruway, then having it take over the whole of the Berkshire Connector?

Nope, nobody at all. It's only been discussed to death in the Northeast and Fictional Highways boards. 
I'm a major advocate - this should have been done yesterday. Current free I-90 can be renumbered as I-390 once I-83 (or I-99) makes it to Rochester!

Since the fastest route is the free road, shouldn't that stay I-90? I'm not sure it needed to be built but since it was, one would think it deserves the I-90 designation.

The fastest route is the toll road.

[webny99]

Westbound I-86/NY 17 at I-390

Hmm. I'm not sure I'd count that. It does look like an "exit", but it's just because of how the interchange is configured, it's not really exiting itself in the traditional sense of exiting onto a different roadway.

It looks like I-390 is the through route.

Yes, but it's because of the design of the interchange. It could have easily been designed a bit differently to make I-86 the through route. That's not the case with most other examples, where the route clearly exits onto a different road.

[csw]

Westbound I-86/NY 17 at I-390

Hmm. I'm not sure I'd count that. It does look like an "exit", but it's just because of how the interchange is configured, it's not really exiting itself in the traditional sense of exiting onto a different roadway.

It looks like I-390 is the through route.

Yes, but it's because of the design of the interchange. It could have easily been designed a bit differently to make I-86 the through route. That's not the case with most other examples, where the route clearly exits onto a different road.

The I-86 sign has up arrows, it takes a flyover, it uses the right lane, it's marked on signs farther back as "I-86, next right"...I don't know what else you want. It exits itself.

[Hwy 61 Revisited]

Westbound I-86/NY 17 at I-390

Hmm. I'm not sure I'd count that. It does look like an "exit", but it's just because of how the interchange is configured, it's not really exiting itself in the traditional sense of exiting onto a different roadway.

It looks like I-390 is the through route.

Yes, but it's because of the design of the interchange. It could have easily been designed a bit differently to make I-86 the through route. That's not the case with most other examples, where the route clearly exits onto a different road.

The I-86 sign has up arrows, it takes a flyover, it uses the right lane, it's marked on signs farther back as "I-86, next right"...I don't know what else you want. It exits itself.

It does feel somewhat odd when highways switch which lanes they take. If I-99 were extended to Rochester, it would start on the slow lane then move into the fast lane.

[webny99]

The I-86 sign has up arrows, it takes a flyover, it uses the right lane, it's marked on signs farther back as "I-86, next right"...I don't know what else you want. It exits itself.

It goes from Southern Tier Expressway to... Southern Tier Expressway. It's the same road on both sides of the interchange, it just happens to pass through an interchange that's designed a bit differently than your standard directional T. A minor blip in an otherwise consistent through route.

[sprjus4]

Westbound I-86/NY 17 at I-390

Hmm. I'm not sure I'd count that. It does look like an "exit", but it's just because of how the interchange is configured, it's not really exiting itself in the traditional sense of exiting onto a different roadway.

It looks like I-390 is the through route.

Yes, but it's because of the design of the interchange. It could have easily been designed a bit differently to make I-86 the through route. That's not the case with most other examples, where the route clearly exits onto a different road.

I-390 becomes the through route on the first freeway, and I-86 exits itself onto another freeway to continue west towards I-90.

[sprjus4]

The I-86 sign has up arrows, it takes a flyover, it uses the right lane, it's marked on signs farther back as "I-86, next right"...I don't know what else you want. It exits itself.

It goes from Southern Tier Expressway to... Southern Tier Expressway. It's the same road on both sides of the interchange, it just happens to pass through an interchange that's designed a bit differently than your standard directional T. A minor blip in an otherwise consistent through route.

All of the other examples that exit themselves keep the same name. For the I-80 / I-76 example, they are both I-80 and I-76 on their respective facilities even after exiting. For the Fairfax County Parkway example, it continues as such even after exiting.

[hockeyjohn]

Several in the Indianapolis area due to the general lack of State highways inside I-465 (presently only I-65 and I-70) and included are only the ones where the exit ramp is at something akin to full speed and where no traffic lights are present at the junction:

• SR-37 is part of I-69's Exit 0 onto I-465 south on the northeast side of town while Binford Blvd is the through road
• US-31 exits onto I-465 east on the southside of town with East Street being the continuation
• I-74 technically exits itself onto I-465 west on the eastside with Southeastern Ave continuing but the construction project a while back indicates Southeastern Ave now as Exit 94.   The ramp speed on I-74 is less than proceeding on Southeastern Ave, however.

[dvferyance]

I-55 NB in Memphis really bad you have to take a cloverleaf ramp to stay on I-55. Also I-75 NB in Lexington you have to exit to stay on 75 the mainline continues as I-64.

[ctkatz]

I 15 in montana despite being the interstate with the mileage and exit numbers when it's duplexed with I 90 exts onto itself. drops down to one lane too. same thing with the I 90 west western terminus with I 94 in montana.

[1995hoo]

VA-286 (Fairfax County Parkway) exits off itself eastbound at VA-289 (Franconia-Springfield Parkway).
....

I'd say this is even more of an exit off itself going the other way because in that direction you have to exit to the right and go around a loop ramp, whereas eastbound the right lane goes right, the left lane goes left, and the middle lane splits.

[sparker]

I-5 northbound does this twice due to it taking over old portions of US routings: at US-101 in downtown Los Angeles, and at CA-99 at Wheeler Ridge.

(although you could argue that those have both become effectively left-hand exits)

Actually, it does it a third time at the I-580 exit; the 2+2 configuration grows an extra right lane, and that lane plus the split original right lane turns to the right as the continuation of I-5.  That's the last instance of a TOTSO on NB I-5 in CA; the next one's up in Portland at the I-405 split.

[Finrod]

I-90 East left-exits I-90-94 (aka the Dan Ryan Expressway) to go to the Chicago Skyway and the Indiana toll road beyond:

https://www.google.com/maps/@41.7778345,-87.6308443,3a,75y,143.27h,92.5t/data=!3m6!1e1!3m4!1sJVG0RRrEP2nGIMo8VmYqfg!2e0!7i16384!8i8192

[RobbieL2415]

I-90 exits the Berkshire Extension to go through Albany.

[JCinSummerfield]

US-50 & OH-7 run west concurrently, when US-50 has to exit off the freeway.  After ¼ mile long 1-lane exit ramp, it joins with the exit ramp from the opposite direction to form another freeway.

[Occidental Tourist]

Northbound I-5, San Diego Freeway exits itself at I-5/I-405 onto I-405.
I-280 north at CA-1 north (19th Avenue) San Francisco
I-5 at I-580
I-10 in Downtown Los Angeles, twice. The through movements go to CA-60 (eastbound) or San Bernardino Freeway/US-101 (westbound)

The through route eastbound for the 10 in Downtown LA is the 5/10 Golden State Fwy merge, with the 5 south and 60 east exiting to the right.  The 10 then exits a mile thereafter to the right onto the San Bernardino Fwy and the 5 north is the through route.

[mgk920]

US 10 comes into the Appleton, WI area from the west as a freeway.  At I-41, the freeway picks up the WI 441 designation.  Several interchanges later, on Appleton's south side, US 10 hops off of the freeway at Oneida St, and continues on eastward towards Manitowoc, WI as a mostly two lane surface highway.

Also in Wisconsin, as it progresses eastward, WI 29 picks up WI 32 as it nears the Green Bay area.  As the combined WI 29/32 highway nears I-41 as a freeway, WI 29 hops off of the freeway at its last crossroad interchange (Packerland Dr) to continue on into the city as a surface street (Shawano Ave), while the freeway continues on for one more interchange as WI 32 to end at I-41.

Mike

[ilpt4u]

I-90 East left-exits I-90-94 (aka the Dan Ryan Expressway) to go to the Chicago Skyway and the Indiana toll road beyond:

https://www.google.com/maps/@41.7778345,-87.6308443,3a,75y,143.27h,92.5t/data=!3m6!1e1!3m4!1sJVG0RRrEP2nGIMo8VmYqfg!2e0!7i16384!8i8192

Only kinda. Its a Left Exit from the Local Lanes, and a Right Exit from the Express Lanes. Maybe we call it the "Center"  Exit?

And if the Center lanes are I-90, does that not make I-94 the Exit, on the Far Right Local and Far Left Express Lanes?

https://www.google.com/maps/@41.7912279,-87.6313098,3a,75y,184.92h,93.44t/data=!3m6!1e1!3m4!1sRl5Hp0zeBe-w2AGd1pm1uw!2e0!7i16384!8i8192