AARoads Forum

National Boards => General Highway Talk => Topic started by: webny99 on December 06, 2023, 08:55:10 AM

Title: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 06, 2023, 08:55:10 AM
I'm looking for examples of two different applications of U-turns at a freeway interchange - but NOT including the most obvious form, the Texas U-turn.

1) Cases where a U-turn (preferably at a signalized intersection) is the officially signed/designated way for traffic to enter a freeway. The example that I was thinking of is actually a jughandle (https://maps.app.goo.gl/43tZcSymeQ3XaHsx7), where both I-287 SB to US 202/206 SB AND US 202/206 NB to I-287 SB are facilitated by using the jughandle to make a U-turn movement, due to the two missing ramps at the interchange itself. What other examples are there of a regular or de facto u-turn being signed for a freeway entrance or exit movement?

2) Cases where there is NO parallel service or frontage road (and of course, no Texas U-turn), but where you would still get on the freeway going the wrong way just to make a U-turn at the next exit to access the freeway in the other direction. Classic example shown here (https://www.google.com/maps/dir/43.1370025,-77.5544096/43.1434829,-77.5455781/@43.1338759,-77.5534815,14.04z/data=!4m2!4m1!3e0?entry=ttu), used to get from Highland Ave to NY 590 NB, this is usually a faster alternate to head north the slog that is Winton/Blossom.

(Edited for clarity)
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: 1995hoo on December 06, 2023, 09:02:16 AM
Not sure if this is what you have in mind because it's not really signed as a U-turn, but the ramp pretty clearly makes one. NB NJ-17 to SB I-287 and NB I-287 to SB NJ-17 both come to mind (both movements use the same U-turn ramp immediately south of the state line).
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: hotdogPi on December 06, 2023, 09:06:12 AM
US 1 in Peabody with an inexplicable traffic light. (This one is a Jersey freeway.)

Whenever the MA 28 → MA 213 eastbound ramp is closed (typically due to construction), it's better to go west on 213 and then loop around.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: wanderer2575 on December 06, 2023, 09:18:44 AM
Ebd Bristol Road to nbd I-75/US-23 in Flint, MI (https://www.google.com/maps/@42.9731279,-83.7233135,920m/data=!3m1!1e3?entry=ttu) requires using the roundabout east of the interchange to make a U-turn and then using the ramp from wbd Bristol Road.

Signage (https://www.google.com/maps/@42.9734783,-83.7252484,3a,40.1y,88.47h,87.48t/data=!3m6!1e1!3m4!1s-L6bso8dgca5kbT7H2HBbQ!2e0!7i16384!8i8192?entry=ttu)
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: OCGuy81 on December 06, 2023, 09:36:53 AM
Would something like this qualify?  It's Interstate 41/US 45 at Watertown Plank Rd in Wauwatosa, WI.

https://www.google.com/maps/@43.0452343,-88.0329262,805m/data=!3m1!1e3?entry=ttu (https://www.google.com/maps/@43.0452343,-88.0329262,805m/data=!3m1!1e3?entry=ttu)
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: kirbykart on December 06, 2023, 10:40:58 AM
Niagara Pkwy at the Fort Niagara Spur has a missing ramp, so the movement is covered by this u-turn (https://maps.app.goo.gl/VrTU2x6K1PCi5jYE6)

US-20 at I-79 in Erie, PA - again, there are some missing ramps so a u-turn is used https://maps.app.goo.gl/UuVKeUg6vjhaEsZE6 (https://maps.app.goo.gl/UuVKeUg6vjhaEsZE6)
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: jeffandnicole on December 06, 2023, 11:09:52 AM
US 1 North near Princeton, NJ

GSV: https://maps.app.goo.gl/RSweKeN7CcEqTB2LA

Aerial: https://maps.app.goo.gl/msBmFfPYMxVPTPbA8
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 06, 2023, 12:55:51 PM
Quote from: 1995hoo on December 06, 2023, 09:02:16 AM
Not sure if this is what you have in mind because it's not really signed as a U-turn, but the ramp pretty clearly makes one. NB NJ-17 to SB I-287 and NB I-287 to SB NJ-17 both come to mind (both movements use the same U-turn ramp immediately south of the state line).

Quote from: kirbykart on December 06, 2023, 10:40:58 AM
Niagara Pkwy at the Fort Niagara Spur has a missing ramp, so the movement is covered by this u-turn (https://maps.app.goo.gl/VrTU2x6K1PCi5jYE6)

Quote from: jeffandnicole on December 06, 2023, 11:09:52 AM
US 1 North near Princeton, NJ

GSV: https://maps.app.goo.gl/RSweKeN7CcEqTB2LA

Aerial: https://maps.app.goo.gl/msBmFfPYMxVPTPbA8

All interesting examples, but not exactly what I had in mind. I'm primarily looking for U-turns that occur on a surface street, especially where signage actually directs traffic to make a U-turn at a signalized intersection.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 06, 2023, 01:02:48 PM
Quote from: 1 on December 06, 2023, 09:06:12 AM
US 1 in Peabody with an inexplicable traffic light. (This one is a Jersey freeway.)

What location specifically are you referring to here?


Quote from: 1 on December 06, 2023, 09:06:12 AM
Whenever the MA 28 → MA 213 eastbound ramp is closed (typically due to construction), it's better to go west on 213 and then loop around.

This one is another good example of #2 in the OP.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 06, 2023, 01:09:56 PM
Quote from: wanderer2575 on December 06, 2023, 09:18:44 AM
Ebd Bristol Road to nbd I-75/US-23 in Flint, MI (https://www.google.com/maps/@42.9731279,-83.7233135,920m/data=!3m1!1e3?entry=ttu) requires using the roundabout east of the interchange to make a U-turn and then using the ramp from wbd Bristol Road.

Signage (https://www.google.com/maps/@42.9734783,-83.7252484,3a,40.1y,88.47h,87.48t/data=!3m6!1e1!3m4!1s-L6bso8dgca5kbT7H2HBbQ!2e0!7i16384!8i8192?entry=ttu)

That is a good one. :thumbsup:

It looks like it was redesigned specifically to combine the two ramps into one, which would explain the choice of a roundabout.



Quote from: kirbykart on December 06, 2023, 10:40:58 AM
US-20 at I-79 in Erie, PA - again, there are some missing ramps so a u-turn is used https://maps.app.goo.gl/UuVKeUg6vjhaEsZE6 (https://maps.app.goo.gl/UuVKeUg6vjhaEsZE6)

This is technically a Michigan left, not a U-turn. But otherwise, it's very much in the same vein of what I'm looking for here.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: roadman65 on December 06, 2023, 01:11:58 PM
US 45W/51 NB just south of of the KY Border.
https://maps.app.goo.gl/ud4jPKa37TTK5pSt8
U turn to return to the SB Kenn Tenn Road exit.

Then I-287 NB in Mahwah, NJ has a u turn ramp to the SB lanes for NJ 17.
https://maps.app.goo.gl/FLtqiUrN8jfxzCvG7
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 06, 2023, 01:14:12 PM
Quote from: OCGuy81 on December 06, 2023, 09:36:53 AM
Would something like this qualify?  It's Interstate 41/US 45 at Watertown Plank Rd in Wauwatosa, WI.

https://www.google.com/maps/@43.0452343,-88.0329262,805m/data=!3m1!1e3?entry=ttu (https://www.google.com/maps/@43.0452343,-88.0329262,805m/data=!3m1!1e3?entry=ttu)

I am not seeing the U-turn in this one.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: 1995hoo on December 06, 2023, 01:52:54 PM
Quote from: roadman65 on December 06, 2023, 01:11:58 PM
....

Then I-287 NB in Mahwah, NJ has a u turn ramp to the SB lanes for NJ 17.
https://maps.app.goo.gl/FLtqiUrN8jfxzCvG7

Really? Who woulda thunk it?

Quote from: 1995hoo on December 06, 2023, 09:02:16 AM
Not sure if this is what you have in mind because it's not really signed as a U-turn, but the ramp pretty clearly makes one. NB NJ-17 to SB I-287 and NB I-287 to SB NJ-17 both come to mind (both movements use the same U-turn ramp immediately south of the state line).
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: hotdogPi on December 06, 2023, 01:54:32 PM
Quote from: webny99 on December 06, 2023, 01:02:48 PM
Quote from: 1 on December 06, 2023, 09:06:12 AM
US 1 in Peabody with an inexplicable traffic light. (This one is a Jersey freeway.)

What location specifically are you referring to here?

https://www.google.com/maps/@42.5290989,-70.9933762,18.33z?entry=ttu
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: roadman65 on December 06, 2023, 01:58:08 PM
Quote from: 1995hoo on December 06, 2023, 01:52:54 PM
Quote from: roadman65 on December 06, 2023, 01:11:58 PM
....

Then I-287 NB in Mahwah, NJ has a u turn ramp to the SB lanes for NJ 17.
https://maps.app.goo.gl/FLtqiUrN8jfxzCvG7

Really? Who woulda thunk it?

Quote from: 1995hoo on December 06, 2023, 09:02:16 AM
Not sure if this is what you have in mind because it's not really signed as a U-turn, but the ramp pretty clearly makes one. NB NJ-17 to SB I-287 and NB I-287 to SB NJ-17 both come to mind (both movements use the same U-turn ramp immediately south of the state line).

Ha ha. I didn't see it. I overlooked it when checking out posts.

Just don't tell Rothman or VDane 😂
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 06, 2023, 02:05:24 PM
Quote from: 1 on December 06, 2023, 01:54:32 PM
Quote from: webny99 on December 06, 2023, 01:02:48 PM
Quote from: 1 on December 06, 2023, 09:06:12 AM
US 1 in Peabody with an inexplicable traffic light. (This one is a Jersey freeway.)

What location specifically are you referring to here?

https://www.google.com/maps/@42.5290989,-70.9933762,18.33z?entry=ttu

Interestingly, US 1 NB also has its own ramps to I-95/128. Does this exist solely for the group of businesses north of the ramps?
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: 1995hoo on December 06, 2023, 02:31:00 PM
How about the following in New Jersey? These are one of the most extreme examples I can think of where you have to get on multiple roads going the wrong way to get where you want to go.

If you want to go from eastbound NJ-24 to the northbound JFK Parkway, the signs expressly tell you to exit NJ-24 and then use two loop ramps to make what's usually called a cloverleaf U-turn: https://www.google.com/maps/dir/40.741693,-74.3706448/40.740032,-74.368569/@40.7391071,-74.3721427,17z/data=!3m1!4b1!4m2!4m1!3e0?entry=ttu

But it gets more fun if you want to go from eastbound NJ-24 to westbound NJ-124: https://www.google.com/maps/dir/40.741693,-74.3706448/40.7393057,-74.3730198/@40.7390032,-74.3726224,16.42z/data=!4m2!4m1!3e0?entry=ttu  I understand the reason for this convoluted routing to be that an unbuilt road northwest of there (for which you can see ghost ramps on Google satellite view) would have filled in the missing move.

Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: jmacswimmer on December 06, 2023, 02:56:45 PM
At the I-78/PA 309/PA 145 interchange south of Allentown (exit 60), the signed movement for PA 145 SB -> I-78 EB is to continue thru the interchange onto PA 309 SB (https://www.google.com/maps/@40.5553406,-75.4331597,3a,75y,165.73h,87.18t/data=!3m6!1e1!3m4!1sphADKgOWd0qIWLO3BdujQQ!2e0!7i16384!8i8192!5m1!1e1?entry=ttu), make a jughandle (https://www.google.com/maps/@40.5508651,-75.4273774,3a,75y,142.47h,83.04t/data=!3m6!1e1!3m4!1sEFv1ORJiLSoFBdJxJsyRvA!2e0!7i16384!8i8192!5m1!1e1?entry=ttu) u-turn (https://www.google.com/maps/@40.5491031,-75.4255857,3a,75y,162.81h,90.75t/data=!3m6!1e1!3m4!1sQ2l4P0N3Zzy6OVNdZAut3g!2e0!7i16384!8i8192!5m1!1e1?entry=ttu) at the Saucon Valley Rd/Center Valley Parkway intersection (https://www.google.com/maps/@40.5481574,-75.4248176,3a,75y,70.78h,84.26t/data=!3m6!1e1!3m4!1sbDLI8JxMf0W13d3VJxzlVA!2e0!7i16384!8i8192!5m1!1e1?entry=ttu), and then use the ramp to I-78 EB from PA 309 NB (https://www.google.com/maps/@40.5505999,-75.4268589,3a,75y,320.9h,88.04t/data=!3m6!1e1!3m4!1sD7aTRHGleg4mKs8FFJAkPg!2e0!7i16384!8i8192!5m1!1e1?entry=ttu).
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: OCGuy81 on December 06, 2023, 03:58:15 PM
Quote from: webny99 on December 06, 2023, 01:14:12 PM
Quote from: OCGuy81 on December 06, 2023, 09:36:53 AM
Would something like this qualify?  It's Interstate 41/US 45 at Watertown Plank Rd in Wauwatosa, WI.

https://www.google.com/maps/@43.0452343,-88.0329262,805m/data=!3m1!1e3?entry=ttu (https://www.google.com/maps/@43.0452343,-88.0329262,805m/data=!3m1!1e3?entry=ttu)

I am not seeing the U-turn in this one.

I was looking at the onramps to 41.  You basically head south before taking a U shaped turn to get onto the NB lanes
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: fillup420 on December 06, 2023, 05:35:10 PM
In Charlotte NC, NC 16 exits from I-277 here (https://www.google.com/maps/@35.2178407,-80.8347796,3a,75y,218.7h,96.16t/data=!3m6!1e1!3m4!1s2LvgiDF0azdJ84gZ9UvSBQ!2e0!7i16384!8i8192?entry=ttu), Then requires a U-turn sort of maneuver, although it is not very well signed. This (https://www.google.com/maps/@35.2179364,-80.8358123,3a,75y,359.74h,94.8t/data=!3m6!1e1!3m4!1sbgupWz3AdEd4tPV7AHxy3g!2e0!7i16384!8i8192?entry=ttu) is the only indication that NC 16 makes a turn, but doesn't do a good job of telling that its a very hard left turn, or a U-turn IMO.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: CoreySamson on December 06, 2023, 09:04:50 PM
Quote from: OCGuy81 on December 06, 2023, 09:36:53 AM
Would something like this qualify?  It's Interstate 41/US 45 at Watertown Plank Rd in Wauwatosa, WI.

https://www.google.com/maps/@43.0452343,-88.0329262,805m/data=!3m1!1e3?entry=ttu (https://www.google.com/maps/@43.0452343,-88.0329262,805m/data=!3m1!1e3?entry=ttu)
That is an absolutely beautiful interchange!
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: jp the roadgeek on December 06, 2023, 09:13:45 PM
Exit 9B on I-295 North is specifically for I-295 South.  The U-Turn is a result of utilizing a partially built interchange for the cancelled I-84 from Hartford to Providence.

https://maps.app.goo.gl/W6azLGc31Fp8cLXQA

And then you have a U-Turn northbound on the Palisades Parkway for access to Exit 3 on the southbound side

https://maps.app.goo.gl/tad1J4x6JQWYFkFT9
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 06, 2023, 09:49:25 PM
Quote from: 1995hoo on December 06, 2023, 02:31:00 PM
How about the following in New Jersey? These are one of the most extreme examples I can think of where you have to get on multiple roads going the wrong way to get where you want to go.

If you want to go from eastbound NJ-24 to the northbound JFK Parkway, the signs expressly tell you to exit NJ-24 and then use two loop ramps to make what's usually called a cloverleaf U-turn: https://www.google.com/maps/dir/40.741693,-74.3706448/40.740032,-74.368569/@40.7391071,-74.3721427,17z/data=!3m1!4b1!4m2!4m1!3e0?entry=ttu

But it gets more fun if you want to go from eastbound NJ-24 to westbound NJ-124: https://www.google.com/maps/dir/40.741693,-74.3706448/40.7393057,-74.3730198/@40.7390032,-74.3726224,16.42z/data=!4m2!4m1!3e0?entry=ttu  I understand the reason for this convoluted routing to be that an unbuilt road northwest of there (for which you can see ghost ramps on Google satellite view) would have filled in the missing move.

What's particularly interesting about the second example is that it's a right turn movement that's missing. That seems unusual, usually a missing movement would be the left turn movement, if anything.

Also hilarious that one of Google's recommended options for that movement involves a full four loop ramps - the same two shown in your first example, followed by a loop back to NJ 24 WB, and finally, a loop onto NJ 124 WB. I recall taking three loops as a posted detour at US 14 and I-35 in Owatonna, MN, a few years ago, but don't think I've ever seen a route that reasonably uses a full quartet of loops!
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 06, 2023, 09:56:24 PM
Quote from: webny99 on December 06, 2023, 02:05:24 PM
Quote from: 1 on December 06, 2023, 01:54:32 PM
Quote from: webny99 on December 06, 2023, 01:02:48 PM
Quote from: 1 on December 06, 2023, 09:06:12 AM
US 1 in Peabody with an inexplicable traffic light. (This one is a Jersey freeway.)

What location specifically are you referring to here?

https://www.google.com/maps/@42.5290989,-70.9933762,18.33z?entry=ttu

Interestingly, US 1 NB also has its own ramps to I-95/128. Does this exist solely for the group of businesses north of the ramps?

Nevermind, I see now that it also serves Dearborn Rd, which connects to several other local roads. With that in mind, removing the jughandle isn't really an option. Although I agree the traffic light is inexplicable, I'm not sure what could reasonably replace it aside from an overpass that loops over US 1 or a partial interchange at Forest St/Winona St.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 06, 2023, 10:09:10 PM
Quote from: fillup420 on December 06, 2023, 05:35:10 PM
In Charlotte NC, NC 16 exits from I-277 here (https://www.google.com/maps/@35.2178407,-80.8347796,3a,75y,218.7h,96.16t/data=!3m6!1e1!3m4!1s2LvgiDF0azdJ84gZ9UvSBQ!2e0!7i16384!8i8192?entry=ttu), Then requires a U-turn sort of maneuver, although it is not very well signed. This (https://www.google.com/maps/@35.2179364,-80.8358123,3a,75y,359.74h,94.8t/data=!3m6!1e1!3m4!1sbgupWz3AdEd4tPV7AHxy3g!2e0!7i16384!8i8192?entry=ttu) is the only indication that NC 16 makes a turn, but doesn't do a good job of telling that its a very hard left turn, or a U-turn IMO.

I was about to reply "isn't that just a standard 90 degree turn?", then realized what you were actually talking about. Wow! That is an egregious turn to begin with (agree with calling it a U-turn), and egregiously poorly-signed on top of it. Definitely something any potential clincher of NC 16 should be aware of, or they'd certainly be headed down E 4th St into the heart of Charlotte for who knows how long before wondering what happened to NC 16.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: chrisg69911 on December 06, 2023, 10:20:42 PM
https://maps.app.goo.gl/unRSGawM44UmBu448

Pretty sure this is the on place on US 46 where a u-turn lane is explicitly stated
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 06, 2023, 10:52:40 PM
Quote from: jp the roadgeek on December 06, 2023, 09:13:45 PM
Exit 9B on I-295 North is specifically for I-295 South.  The U-Turn is a result of utilizing a partially built interchange for the cancelled I-84 from Hartford to Providence.
https://maps.app.goo.gl/W6azLGc31Fp8cLXQA

Seems odd that the ramp was left open and signed if there's no plans to complete the interchange. But it does remind me of this ramp (https://maps.app.goo.gl/8Tg4JR84nLrFZ7yK7) at the partially completed US 15/CSVT interchange near Winfield, PA.


Quote from: jp the roadgeek on December 06, 2023, 09:13:45 PM
And then you have a U-Turn northbound on the Palisades Parkway for access to Exit 3 on the southbound side

https://maps.app.goo.gl/tad1J4x6JQWYFkFT9

Never noticed it before, but that ramp also provides access from the State Line lookout to the SB Palisades. And there's another median U-turn south of Exit 3 to access the Palisades NB and State Line lookout.

And while on the subject of NY Parkways, this pair of U-turns (https://www.google.com/maps/@43.2727326,-77.6893351,557m/data=!3m1!1e3?entry=ttu) on the Lake Ontario State Pkwy stands out for serving absolutely no purpose, although they could come in handy if there was a ramp closure at I-390 or Long Pond Rd. And then there's this bizarre setup (https://www.google.com/maps/@43.0779881,-79.0154325,279m/data=!3m1!1e3?entry=ttu) on the Niagara Scenic Pkwy (former RMSP), where the U-turns to access Fort Schlosser are placed too tight to access the EB ramps, so there's an at-grade to serve the U-turning traffic. Someone sure overthought that one: it's simultaneously way more complicated AND way more substandard than it needed to be. :hmmm:
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: StogieGuy7 on December 07, 2023, 11:29:47 AM
Quote from: CoreySamson on December 06, 2023, 09:04:50 PM
Quote from: OCGuy81 on December 06, 2023, 09:36:53 AM
Would something like this qualify?  It's Interstate 41/US 45 at Watertown Plank Rd in Wauwatosa, WI.

https://www.google.com/maps/@43.0452343,-88.0329262,805m/data=!3m1!1e3?entry=ttu (https://www.google.com/maps/@43.0452343,-88.0329262,805m/data=!3m1!1e3?entry=ttu)
That is an absolutely beautiful interchange!

Seems unnecessarily complicated to me.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: 1995hoo on December 07, 2023, 11:40:53 AM
Quote from: StogieGuy7 on December 07, 2023, 11:29:47 AM
Quote from: CoreySamson on December 06, 2023, 09:04:50 PM
Quote from: OCGuy81 on December 06, 2023, 09:36:53 AM
Would something like this qualify?  It's Interstate 41/US 45 at Watertown Plank Rd in Wauwatosa, WI.

https://www.google.com/maps/@43.0452343,-88.0329262,805m/data=!3m1!1e3?entry=ttu (https://www.google.com/maps/@43.0452343,-88.0329262,805m/data=!3m1!1e3?entry=ttu)
That is an absolutely beautiful interchange!

Seems unnecessarily complicated to me.

Conceptually, it reminds me of this one in Alexandria, Virginia, that I've always liked because of the nice way it eliminates cloverleaf weave areas, which the one in Wisconsin also does (but likely at greater cost due to having more, and longer, overpasses):

https://www.google.com/maps/@38.8345249,-77.0982107,545m/data=!3m1!1e3?entry=ttu
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: StogieGuy7 on December 07, 2023, 01:37:12 PM
Quote from: 1995hoo on December 07, 2023, 11:40:53 AM
Quote from: StogieGuy7 on December 07, 2023, 11:29:47 AM
Quote from: CoreySamson on December 06, 2023, 09:04:50 PM
Quote from: OCGuy81 on December 06, 2023, 09:36:53 AM
Would something like this qualify?  It's Interstate 41/US 45 at Watertown Plank Rd in Wauwatosa, WI.

https://www.google.com/maps/@43.0452343,-88.0329262,805m/data=!3m1!1e3?entry=ttu (https://www.google.com/maps/@43.0452343,-88.0329262,805m/data=!3m1!1e3?entry=ttu)
That is an absolutely beautiful interchange!

Seems unnecessarily complicated to me.

Conceptually, it reminds me of this one in Alexandria, Virginia, that I've always liked because of the nice way it eliminates cloverleaf weave areas, which the one in Wisconsin also does (but likely at greater cost due to having more, and longer, overpasses):

https://www.google.com/maps/@38.8345249,-77.0982107,545m/data=!3m1!1e3?entry=ttu

This one makes a lot more sense to me. Plus, the traffic counts at this location near Alexandria are super high (I-395, former Shirley Highway, and VA-7 King St.). That interchange near Milwaukee has a small fraction of the daily traffic that your example has. Not to mention that Milwaukeeans don't seem capable of negotiating complex traffic patterns due to a glaring lack of training.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: 1995hoo on December 07, 2023, 07:10:18 PM
I'll take your word for that—Wisconsin is one of the nine states I have yet to visit.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: mgk920 on December 07, 2023, 07:26:29 PM
Wouldn't any interchange with a matched pair of cloverleaf loop ramps meet the OP's criteria for this thread?

Mike
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 07, 2023, 08:34:22 PM
Quote from: StogieGuy7 on December 07, 2023, 01:37:12 PM
Quote from: 1995hoo on December 07, 2023, 11:40:53 AM
Quote from: StogieGuy7 on December 07, 2023, 11:29:47 AM
Quote from: CoreySamson on December 06, 2023, 09:04:50 PM
Quote from: OCGuy81 on December 06, 2023, 09:36:53 AM
Would something like this qualify?  It's Interstate 41/US 45 at Watertown Plank Rd in Wauwatosa, WI.

https://www.google.com/maps/@43.0452343,-88.0329262,805m/data=!3m1!1e3?entry=ttu (https://www.google.com/maps/@43.0452343,-88.0329262,805m/data=!3m1!1e3?entry=ttu)
That is an absolutely beautiful interchange!

Seems unnecessarily complicated to me.

Conceptually, it reminds me of this one in Alexandria, Virginia, that I've always liked because of the nice way it eliminates cloverleaf weave areas, which the one in Wisconsin also does (but likely at greater cost due to having more, and longer, overpasses):

https://www.google.com/maps/@38.8345249,-77.0982107,545m/data=!3m1!1e3?entry=ttu

This one makes a lot more sense to me. Plus, the traffic counts at this location near Alexandria are super high (I-395, former Shirley Highway, and VA-7 King St.). That interchange near Milwaukee has a small fraction of the daily traffic that your example has. Not to mention that Milwaukeeans don't seem capable of negotiating complex traffic patterns due to a glaring lack of training.

A small fraction? No doubt I-395 carries a ton of traffic, but 8 lanes of I-41 on the main freeway outside Milwaukee can't be carrying that much less traffic.  And it may be overbuilt (mostly because of the six separate bridges over Watertown-Plank Rd), but it doesn't seem particularly complicated to navigate.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 07, 2023, 08:45:46 PM
Quote from: mgk920 on December 07, 2023, 07:26:29 PM
Wouldn't any interchange with a matched pair of cloverleaf loop ramps meet the OP's criteria for this thread?

Mike

Not unless both loops are used to make a single turn movement and signed as such.

And although many of the responses have been on freeways, I'm primarily looking for U-turns that occur on a surface street at a signalized intersection. There have been a handful of good examples and some interesting variants, but no perfect match for the first situation described yet (admittedly, even the NJ example in the OP came with a caveat).
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 07, 2023, 10:26:28 PM
Quote from: jmacswimmer on December 06, 2023, 02:56:45 PM
At the I-78/PA 309/PA 145 interchange south of Allentown (exit 60), the signed movement for PA 145 SB -> I-78 EB is to continue thru the interchange onto PA 309 SB (https://www.google.com/maps/@40.5553406,-75.4331597,3a,75y,165.73h,87.18t/data=!3m6!1e1!3m4!1sphADKgOWd0qIWLO3BdujQQ!2e0!7i16384!8i8192!5m1!1e1?entry=ttu), make a jughandle (https://www.google.com/maps/@40.5508651,-75.4273774,3a,75y,142.47h,83.04t/data=!3m6!1e1!3m4!1sEFv1ORJiLSoFBdJxJsyRvA!2e0!7i16384!8i8192!5m1!1e1?entry=ttu) u-turn (https://www.google.com/maps/@40.5491031,-75.4255857,3a,75y,162.81h,90.75t/data=!3m6!1e1!3m4!1sQ2l4P0N3Zzy6OVNdZAut3g!2e0!7i16384!8i8192!5m1!1e1?entry=ttu) at the Saucon Valley Rd/Center Valley Parkway intersection (https://www.google.com/maps/@40.5481574,-75.4248176,3a,75y,70.78h,84.26t/data=!3m6!1e1!3m4!1sbDLI8JxMf0W13d3VJxzlVA!2e0!7i16384!8i8192!5m1!1e1?entry=ttu), and then use the ramp to I-78 EB from PA 309 NB (https://www.google.com/maps/@40.5505999,-75.4268589,3a,75y,320.9h,88.04t/data=!3m6!1e1!3m4!1sD7aTRHGleg4mKs8FFJAkPg!2e0!7i16384!8i8192!5m1!1e1?entry=ttu).

Whoops, missed responding to this one: First of all, the traffic signal between PA 309 and Center Valley Pkwy is absolutely insane. What's the point of having an interchange (or 3/4 of an interchange), only for the intersecting streets to still have a signal between them instead of an overpass/underpass? Not only that, directing the U-turning traffic into the leftmost turn lane sets them up to have to make a double weave once they turn onto PA 309 in order to even reach I-78 EB! An overpass here, by contrast, would allow the U-turning traffic to enter the existing ramp to PA 309 instead of turning directly onto mainline PA 309, which would then appropriately join PA 309 on the right, so the U-turning vehicles would already be in position to access I-78 EB with no lane merges required, instead of two inside of 1000 feet.  :crazy:

Beyond that craziness, this is actually a pretty good example of the second situation in the OP, and well-signed as such.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: mrsman on December 10, 2023, 01:43:35 PM
For exits, I will introduce you to the I-270 and I-495 interchange in Bethesda, MD -- particularly the interaction with MD 355 (Rockville Pike in the immediate area and Wisconsin Ave a little bit further south).  The official name change seems to occur at Woodmont Ave, just south of NIH, but signs on the highways still do make a mention of Wisconsin Ave, even though this is almost a mile further north. 


https://www.google.com/maps/@39.0164667,-77.0982353,3a,75y,315.42h,80.08t/data=!3m6!1e1!3m4!1sA-UDz4fYyRmhjc9i8UjZIQ!2e0!7i16384!8i8192?entry=ttu

The exit signage on the westbound (outer loop) Beltway indicates both Rockville and Bethesda (i.e. north and south), but the exit puts you on MD 355 going northbound.  You need to make use of a jughandle to head southbound, after driving for a little bit on MD 355 north.

https://www.google.com/maps/@39.0199397,-77.102203,3a,37.5y,350.69h,88.03t/data=!3m6!1e1!3m4!1sOrYD32yF5BFNOTq_HBGA9g!2e0!7i16384!8i8192?entry=ttu

The exit signage on the eastbound (inner loop) Beltway only indicates Bethesda and it indeed forces you to go southbound only on MD 355.  But if you do insist on going north, there is some signage to guide you by way of a u-turn.

https://www.google.com/maps/@39.0165803,-77.1015974,3a,75y,81.9h,87.6t/data=!3m6!1e1!3m4!1sjaMRJX_Af9Hoe_KE8B_zag!2e0!7i16384!8i8192?entry=ttu

Most cars in this left turn lane are making the indicated u-turn and not turning left on Bellevue.

https://www.google.com/maps/@39.0131494,-77.098777,3a,75y,122.22h,83t/data=!3m6!1e1!3m4!1skT1KRsP-ViT1sgUPE3Spmg!2e0!7i16384!8i8192?entry=ttu

Technically, the last exit on I-270 south before its merge with Beltway eastbound is also an exit to MD 355 south.  One could do the same u-turn to head onto MD 355 north, if that is desired, but likely less traffic is interested as MD 355 is I-270's business route and MD 355 parallels I-270 for its entire length.  So more of I-270's traffic that wants MD 355 north is likely to just use a different exit to reach MD 355, like taking Old Georgetown Road to Tuckerman Lane to MD 355.  [Honestly, eastbound Beltway traffic could also do a similar maneuver as well to avoid the u-turn.]

Another use for that u-turn is for traffic on SB MD 355 from Rockville that wants to head toward the EB Beltway (to Silver Spring and Baltimore).  There is a direct ramp for this movement, but it puts you on the left side of the Beltway, and that can be an uncomfortable merge for some people, myself included.  If I am in the area and I am headed home, I would usually go past the Beltway, make the u-turn and then use the ramp from NB MD 355 to the Beltway east which puts you on the right side of the Beltway.  This is better for me as I will usually take the Georgia Ave exit to go home, only two exits away.  Making multiple lane changes is very tricky in this area, because the Beltway is very curvy.  No signs to indicate it, but I definitely see from my experiences that I am not the only one who makes the u-turn to access the EB Beltway ramp.

SB MD 355 also has no direct access to WB Beltway or I-270 north.  This u-turn can also be handy for those movements, but signage generally will direct traffic toward Old Georgetown Road instead, either directly or by use of Tuckerman Lane.



Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: 1995hoo on December 10, 2023, 01:48:59 PM
^^^^

I forgot about that interchange. I remember when we were kids, our mom usually took us to White Flint to see the Christmas decorations and she usually made a right on Pooks Hill Road and then turned around through the Marriott hotel's parking lot.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: lepidopteran on December 10, 2023, 02:14:40 PM
Does this count?  In Columbus, OH, Alum Creek Dr. to WB I-70 (https://maps.app.goo.gl/8YfFHCY2wJP3fZT86).  The sign directs traffic to U-turn on to an on-ramp going the other direction.  Note the (rare in the state) "Passenger Cars Only" caveat, due to the tightness of the turn.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: GaryA on December 10, 2023, 02:46:24 PM
It's an isolated mini-freeway, but traffic at the east end of CA 156 is forced onto CA 152 eastbound, with signage directing traffic for CA 152 westbound to use the next exit (Casa de Fruta Parkway, about 1 mile) and re-enter CA 152 westbound.

The GSV at https://maps.app.goo.gl/Srf2k5WqV2o44hvL7 (on CA 152 EB) shows an example of the signage, including a somewhat odd outline US 101 shield.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 10, 2023, 04:59:15 PM
Quote from: mrsman on December 10, 2023, 01:43:35 PM
For exits, I will introduce you to the I-270 and I-495 interchange in Bethesda, MD -- particularly the interaction with MD 355 (Rockville Pike in the immediate area and Wisconsin Ave a little bit further south).  The official name change seems to occur at Woodmont Ave, just south of NIH, but signs on the highways still do make a mention of Wisconsin Ave, even though this is almost a mile further north. 
...

The exit signage on the eastbound (inner loop) Beltway only indicates Bethesda and it indeed forces you to go southbound only on MD 355.  But if you do insist on going north, there is some signage to guide you by way of a u-turn.

https://www.google.com/maps/@39.0165803,-77.1015974,3a,75y,81.9h,87.6t/data=!3m6!1e1!3m4!1sjaMRJX_Af9Hoe_KE8B_zag!2e0!7i16384!8i8192?entry=ttu

Most cars in this left turn lane are making the indicated u-turn and not turning left on Bellevue.

https://www.google.com/maps/@39.0131494,-77.098777,3a,75y,122.22h,83t/data=!3m6!1e1!3m4!1skT1KRsP-ViT1sgUPE3Spmg!2e0!7i16384!8i8192?entry=ttu

Definitely a fascinating interchange! This second example in particular is about the best example we've had so far of a signed freeway interchange movement requiring U-turn on a surface street.


Quote from: lepidopteran on December 10, 2023, 02:14:40 PM
Does this count?  In Columbus, OH, Alum Creek Dr. to WB I-70 (https://maps.app.goo.gl/8YfFHCY2wJP3fZT86).  The sign directs traffic to U-turn on to an on-ramp going the other direction.  Note the (rare in the state) "Passenger Cars Only" caveat, due to the tightness of the turn.

Wow! I have never seen anything quite like this before. I can't believe that's actually a legal and signed turn movement. It definitely fits the spirit of odd U-turn movements to access a freeway ramp, but it is very odd, especially since there's a ramp not far away on Livingston Ave. We could probably have a whole thread of "places where this should be legal" - starting with right here (https://maps.app.goo.gl/vERxs4MKaWchHruj6).
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 10, 2023, 05:31:36 PM
Quote from: GaryA on December 10, 2023, 02:46:24 PM
It's an isolated mini-freeway, but traffic at the east end of CA 156 is forced onto CA 152 eastbound, with signage directing traffic for CA 152 westbound to use the next exit (Casa de Fruta Parkway, about 1 mile) and re-enter CA 152 westbound.

The GSV at https://maps.app.goo.gl/Srf2k5WqV2o44hvL7 (on CA 152 EB) shows an example of the signage, including a somewhat odd outline US 101 shield.

This is another good example. Also interesting that there is a median U-turn that could be used (though it is currently signed as no U-turn) but traffic is directed all the way up to the next interchange instead.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: davewiecking on December 10, 2023, 06:24:23 PM
Quote from: 1995hoo on December 10, 2023, 01:48:59 PM
^^^^

I forgot about that interchange. I remember when we were kids, our mom usually took us to White Flint to see the Christmas decorations and she usually made a right on Pooks Hill Road and then turned around through the Marriott hotel's parking lot.

First thing that popped into my mind when I read the OP, but I knew it deserved lots of GSV links which are a pain on an iPad. The traffic light with a long left/u turn arrow is a "recent" addition, meaning only 25 or so years ago. The U turn has always been available, but without a signal it could take forever.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: NE2 on December 10, 2023, 06:26:47 PM
Some third world countries love these interchanges: https://www.google.com/maps/@20.5808758,-100.992777,1652m/data=!3m1!1e3?entry=ttu
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: jeffandnicole on December 10, 2023, 06:37:48 PM
While not a freeway interchange, US 202 North to US 13 South/40 West has a signed u-turn to get to the US 202 South ramp. https://maps.app.goo.gl/KcWD1vVJP2WXzMtr7

While truck u-turns are not prohibited, a small sign advises the truck route is to go straight.  No further guidance is provided.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: jmacswimmer on December 10, 2023, 07:02:31 PM
Two more I thought of:

-At the AC Expressway/NJ 54 interchange (exit 28) south of Hammonton (https://maps.app.goo.gl/MpmQtvZbGMXE4gHr6?g_st=ic), the only direct movements for the ACE WB are off to NJ 54 NB & on from NJ 54 SB. To cover both NJ 54 NB -> ACE WB & ACE WB -> NJ 54 SB, a single jughandle u-turn is provided just north of the interchange. (https://maps.app.goo.gl/ySXHQ59vkBsmwJW27?g_st=ic) (And unlike the I-78/PA 309/PA 145 interchange I linked upthread, this jughandle exists only for the u-turn and is not part of a separate intersection.)

-At the I-93/Columbia Rd interchange (exit 15) south of Boston (https://maps.app.goo.gl/Q9PfjSrQfri9hUzXA?g_st=ic), the only direct movements for I-93 NB are off to Columbia Rd EB & on from Columbia Rd WB. Traffic looking to make the Columbia Rd EB -> I-93 NB & I-93 NB -> Columbia Rd WB movements are directed to u-turn via the rotary just to the east. (Although the sign explaining this movement (https://maps.app.goo.gl/415CEEcshrn5EhJF8?g_st=ic) was knocked down sometime after the November 2020 GSV & appears to have yet to be replaced.)
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: freebrickproductions on December 10, 2023, 07:28:11 PM
Quote from: webny99 on December 10, 2023, 04:59:15 PM
Quote from: lepidopteran on December 10, 2023, 02:14:40 PM
Does this count?  In Columbus, OH, Alum Creek Dr. to WB I-70 (https://maps.app.goo.gl/8YfFHCY2wJP3fZT86).  The sign directs traffic to U-turn on to an on-ramp going the other direction.  Note the (rare in the state) "Passenger Cars Only" caveat, due to the tightness of the turn.

Wow! I have never seen anything quite like this before. I can't believe that's actually a legal and signed turn movement. It definitely fits the spirit of odd U-turn movements to access a freeway ramp, but it is very odd, especially since there's a ramp not far away on Livingston Ave. We could probably have a whole thread of "places where this should be legal" - starting with right here (https://maps.app.goo.gl/vERxs4MKaWchHruj6).

Anyone else notice this interesting sign (https://www.google.com/maps/@39.9552169,-82.9444286,3a,15y,1.77h,90.25t/data=!3m6!1e1!3m4!1sTGmzHhF8YZlOC-NWtW1POg!2e0!7i16384!8i8192?entry=ttu) just up the street in the Columbus, OH, example? Can't say I'd ever seen anything quite like it before.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: JREwing78 on December 10, 2023, 08:37:22 PM
Near Grand Rapids, MI, this turn for WBD M-21 traffic to access the newly-opened EBD I-96 ramp qualifies. The on-ramp to I-96 opened earlier this fall.
https://maps.app.goo.gl/94oriZRbU2WxUixZ8

The EBD M-21 to WBD I-96 movement has been around a while longer: https://maps.app.goo.gl/RSHemAWNnuzyyf9a8
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: Bitmapped on December 11, 2023, 10:34:46 AM
A couple Pennsylvania examples that I think fit:
- I-80/US 11 interchange at Berwick, PA has a U-turn ramp used for US 11 northbound to get to I-80 westbound: https://maps.app.goo.gl/7eFsmPxe3SSZ11bN6
- U-turn ramps are used for some movements at the PA 51/PA 837 interchange at West Elizabeth, PA: https://maps.app.goo.gl/qyVjFUA36nJu8eCs6
- Southbound PA 837 at the Glenwood Bridge interchange with PA 885 requires a U-turn movement: https://maps.app.goo.gl/k6oPAa2wzeVoB6ha7
- Banksville interchange of I-376/Truck US 19/PA 51 has a U-turn ramp that provides access to I-376 eastbound while also carrying both directions of Truck US 19: https://maps.app.goo.gl/9m1s5YDg3DpF43jZA
- Outside Lancaster, a U-turn ramp provides access from US 30 eastbound to PA 283 westbound: https://maps.app.goo.gl/K5AXepY4BPE9ZhHe8


Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: roadman65 on December 11, 2023, 10:58:05 AM
How about the SB Florida Turnpike exit to US 27 near Groveland, Florida. You have to turn right onto US 27 SB and u turn ( with a wide shoulder for semis to swing wide on the opposing side) to the NB lanes to avoid installing a traffic signal for Lake County to maintain.
https://maps.app.goo.gl/pu5HV7bb5sgLDL2K8
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: wanderer2575 on December 11, 2023, 11:52:10 AM
Northbound Vining Road at I-94 in Romulus, MI (https://maps.app.goo.gl/zir8ERpfQ5w46gkb7) requires a signed (but not signalized) U-turn to use the ramp from southbound Vining Road to westbound I-94.

Signage (https://maps.app.goo.gl/vGso2Fy2ebJsoot86).
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: Mr_Northside on December 11, 2023, 05:02:24 PM
This may be the inverse of what is being asked (or not really applicable at all), but WB I-376 (Parkway East) exit 78B is a ramp going directly only to PA-8 NB, with no direct ramp to US-30 East (Both utilize Ardmore Blvd in the area - US-30 joins the Parkway here, and it is the southern terminus of PA-8).
The first light encountered upon merging into PA-8/Ardmore has a little green sign indicating to make a U-turn to go the other way to Forest Hills (though the LGS doesn't mention US-30 east).

https://maps.app.goo.gl/DA4PF2n5gpA6iVyd8
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: PurdueBill on December 11, 2023, 06:37:26 PM
Quote from: webny99 on December 06, 2023, 09:56:24 PM
Quote from: webny99 on December 06, 2023, 02:05:24 PM
Quote from: 1 on December 06, 2023, 01:54:32 PM
Quote from: webny99 on December 06, 2023, 01:02:48 PM
Quote from: 1 on December 06, 2023, 09:06:12 AM
US 1 in Peabody with an inexplicable traffic light. (This one is a Jersey freeway.)

What location specifically are you referring to here?

https://www.google.com/maps/@42.5290989,-70.9933762,18.33z?entry=ttu

Interestingly, US 1 NB also has its own ramps to I-95/128. Does this exist solely for the group of businesses north of the ramps?

Nevermind, I see now that it also serves Dearborn Rd, which connects to several other local roads. With that in mind, removing the jughandle isn't really an option. Although I agree the traffic light is inexplicable, I'm not sure what could reasonably replace it aside from an overpass that loops over US 1 or a partial interchange at Forest St/Winona St.

The Jughandle also gets reasonably heavy use from people going northbound to access Lake Street (next street southbound after the exit to 128) which serves  West Peabody and Lynnfield without having to go up to Lowell Street.  Lake Street was once part of Route 120, which has been gone for decades.

The Jughandle on Route 1 is well-known enough that traffic reports refer to it as just that--"the Jughandle".  I can hear Rich Kirkland right now on WBZ saying that Route 1 is backed up to the Lynnfield Tunnel from the Jughandle.  Everyone knew what he was talking about.  :P
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: ErmineNotyours on December 11, 2023, 07:04:37 PM
There's no left turn available from northbound Montlake Boulevard to westbound 520, so a sign clarifies that a U-turn on red is permitted. (https://maps.app.goo.gl/DSs3TWu1QHJpEY2W9)

After south US 101 merges onto east Washington 8 and the Washington 8 designation ends, there's a sign for an exit to allow access to each other route by U-turn.  https://maps.app.goo.gl/PC2uWc8viWhV1LFv8
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 11, 2023, 08:55:56 PM
Thanks everyone for the replies - there's been some good ones coming in.
Two trends I'm noticing are a lot of unsignalized/median U-turns, and a lot of LGS's as opposed to route shields.


Quote from: Bitmapped on December 11, 2023, 10:34:46 AM
A couple Pennsylvania examples that I think fit:

Yup - PA is great for pretty much any thread about road-related quirks/oddities/unusual configurations, and this is no exception!

Quote from: Bitmapped on December 11, 2023, 10:34:46 AM
- U-turn ramps are used for some movements at the PA 51/PA 837 interchange at West Elizabeth, PA: https://maps.app.goo.gl/qyVjFUA36nJu8eCs6

This is a really cool interchange design. Simple, compact, and clean.


Quote from: Mr_Northside on December 11, 2023, 05:02:24 PM
This may be the inverse of what is being asked (or not really applicable at all), but WB I-376 (Parkway East) exit 78B is a ramp going directly only to PA-8 NB, with no direct ramp to US-30 East (Both utilize Ardmore Blvd in the area - US-30 joins the Parkway here, and it is the southern terminus of PA-8).
The first light encountered upon merging into PA-8/Ardmore has a little green sign indicating to make a U-turn to go the other way to Forest Hills (though the LGS doesn't mention US-30 east).

https://maps.app.goo.gl/DA4PF2n5gpA6iVyd8

It is odd that Forest Hills is signed but US 30 isn't, but this is otherwise a good one. Was about to comment that this U-turn could also be used to make the US 30 WB to I-376 EB movement before realizing there's already a ramp to make that movement (albeit an odd one!)
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 11, 2023, 09:00:07 PM
Quote from: PurdueBill on December 11, 2023, 06:37:26 PM
The Jughandle on Route 1 is well-known enough that traffic reports refer to it as just that--"the Jughandle".  I can hear Rich Kirkland right now on WBZ saying that Route 1 is backed up to the Lynnfield Tunnel from the Jughandle.  Everyone knew what he was talking about.  :P

Interesting that it's understood when referring to it that way, as that would definitely not work in NJ! :D
I guess I just figured jughandles were a bit more common than that in the Boston area/New England in general.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 11, 2023, 09:29:54 PM
Quote from: ErmineNotyours on December 11, 2023, 07:04:37 PM
There's no left turn available from northbound Montlake Boulevard to westbound 520, so a sign clarifies that a U-turn on red is permitted. (https://maps.app.goo.gl/DSs3TWu1QHJpEY2W9)

After south US 101 merges onto east Washington 8 and the Washington 8 designation ends, there's a sign for an exit to allow access to each other route by U-turn.  https://maps.app.goo.gl/DSs3TWu1QHJpEY2W9

Wow. There's a lot going on here. The side road on the left is one-way, and the side road on the right has a "Local Access Only" sign heading away from the intersection and two "Do Not Enter" signs facing towards the intersection. And then it looks like left or U-turn on red is just randomly permitted here?? I have never seen that before. And if there's no traffic exiting either roadway, why would a red phase even exist on the main road?

My head is spinning just trying to figure out what the signal phasing is like at this intersection. Maybe as follows?

(1) green on the main road w/red left turn arrows
(2) green left turn arrows w/red on the main road

Also, you've got the same link twice so we're only seeing the U-turn on red sign.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: fwydriver405 on December 11, 2023, 10:18:40 PM
The closest example I can think off is near the Kelley Square area in Worcester (https://www.google.com/maps/dir/42.2557445,-71.7955289/42.2527837,-71.7963896/@42.254619,-71.7973076,17.39z/data=!4m2!4m1!3e0?entry=ttu). All traffic coming from I-290 South to Exit 17 must turn right at the interchange. (https://www.google.com/maps/@42.2545539,-71.7970873,3a,75y,215.55h,85.01t/data=!3m7!1e1!3m5!1sgEN9m18mtgpPgAFh3uShaQ!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3DgEN9m18mtgpPgAFh3uShaQ%26cb_client%3Dsearch.revgeo_and_fetch.gps%26w%3D96%26h%3D64%26yaw%3D10.09198%26pitch%3D0%26thumbfov%3D100!7i16384!8i8192?entry=ttu) To get to MA Route 122A South from I-290 South, one must turn right onto 122A North, then make a U Turn at the "peanut" roundabout (https://www.google.com/maps/@42.2553234,-71.7981202,3a,75y,256.56h,84.03t/data=!3m6!1e1!3m4!1sW27l84klu1IausgxUgdRnA!2e0!7i16384!8i8192?entry=ttu) to end up on 122A South.

--

New Hampshire used to have one near the Newington/Dover area before the widening of the Spaulding Turnpike, which was completed in 2020. Before the project, all traffic coming from Dover Point Road or US 4 East (Exit 6 area) had to enter the Spaulding Turnpike / NH 16 south. (Those on SB Dover Point Rd can access US 4 WB directly by going straight). Those who wanted to go northbound on the Spaulding Turnpike / NH 16 (or also access NB Dover Point Rd from US 4 East) had to reverse direction near the Exit 4 area, signed as such (https://www.google.com/maps/@43.1233404,-70.831601,3a,15y,141.31h,89.93t/data=!3m7!1e1!3m5!1s3RJL3whIjPscX2qbWcaPfg!2e0!5s20110901T000000!7i13312!8i6656?entry=ttu).

Before around 2006 or 07 ish, there used to be a LEFT Exit 4N, which was a freeway median U turn to allow those drivers to reverse direction northbound. You would cross the Little Bay Bridge south, keep left, then median U turn onto the northbound lanes. (1 (https://www.aaroads.com/nh/016/nh-016_sb_exit_004_21.jpg), 2 (https://www.aaroads.com/nh/016/nh-016_sb_exit_004_27.jpg), 3 (https://www.aaroads.com/nh/016/nh-016_sb_exit_004_28.jpg). Read more on AARoads here (https://www.aaroads.com/guides/spaulding-tpk-south/) below the "4 East 16 South" header.)

That U turn ramp was closed around that time, as Shattuck Way (OLD RIGHT exit 4S (https://www.aaroads.com/nh/016/nh-016_sb_exit_004_25.jpg), NEW RIGHT exit 4) was extended under Route 16. From 2006-07ish to 2020, you would use RIGHT exit 4 to Shattuck Way, go under 16, and re-enter the freeway going north.

The Exit 6 area has since been converted into a full diamond interchange, which eliminates having to do this roundabout manouvre, as there is now a direct route to 16 North or Dover Point Road North.

--

Quote from: jp the roadgeek on December 06, 2023, 09:13:45 PM
Exit 9B on I-295 North is specifically for I-295 South.  The U-Turn is a result of utilizing a partially built interchange for the cancelled I-84 from Hartford to Providence.

https://maps.app.goo.gl/W6azLGc31Fp8cLXQA

Add to the RI list, the US 1 and RI 138 interchange in North Kingstown. It's a full cloverleaf, but the western half of the road is not constructed at all (I believe it was a cancelled highway, but not certain on what it was). You can make a U-turn from the "leaves" if you want to:

- Go to US 1 South, if you already are on US 1 North. (https://www.google.com/maps/@41.5292451,-71.4656549,3a,28.8y,355.27h,86.32t/data=!3m6!1e1!3m4!1sPWGWsinOOeMBKCFERfC9Cw!2e0!7i16384!8i8192?entry=ttu)
- Go to US 1 North, if you already are on US 1 South. (https://www.google.com/maps/@41.5299202,-71.466577,3a,75y,91.27h,92.61t/data=!3m6!1e1!3m4!1s7sSLzZkpof_mNNoOAm9j-g!2e0!7i16384!8i8192?entry=ttu) You exit US 1 South like you are continuing east onto RI 138, but then exit again to return to US 1 North.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: ElishaGOtis on December 11, 2023, 10:45:04 PM
This interesting converted SPUI near Jacksonville, FL - US-90 @ SR-115

https://www.google.com/maps/@30.2871076,-81.5590235,17.6z?entry=ttu

EDIT: Project info here https://nflroads.com/ProjectDetails?p=5260
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: jeffandnicole on December 11, 2023, 11:20:11 PM
Quote from: ErmineNotyours on December 11, 2023, 07:04:37 PM
There's no left turn available from northbound Montlake Boulevard to westbound 520, so a sign clarifies that a U-turn on red is permitted. (https://maps.app.goo.gl/DSs3TWu1QHJpEY2W9)

Very interesting - not only is the sightline not the greatest, a big-ass sign informing the permission to turn on red further blocks the sightline!
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: vdeane on December 12, 2023, 12:35:57 PM
Freeway/freeway example - I-81 south to I-88 east (https://www.google.com/maps/@42.1284958,-75.9044606,3a,75y,166.33h,81.92t/data=!3m6!1e1!3m4!1s3dJmGThqpu02e5KVQjMXiQ!2e0!7i16384!8i8192?entry=ttu)
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 12, 2023, 01:06:16 PM
Quote from: vdeane on December 12, 2023, 12:35:57 PM
Freeway/freeway example - I-81 south to I-88 east (https://www.google.com/maps/@42.1284958,-75.9044606,3a,75y,166.33h,81.92t/data=!3m6!1e1!3m4!1s3dJmGThqpu02e5KVQjMXiQ!2e0!7i16384!8i8192?entry=ttu)

Is this new? I recall I-88 being signed for Exit 6, which never made much sense as it required four turns including three left turns get to I-88 EB. Turning around via Exit 5 makes much more sense, although it doesn't seem to be signed consistently at the new roundabouts.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: vdeane on December 12, 2023, 08:41:42 PM
Quote from: webny99 on December 12, 2023, 01:06:16 PM
Quote from: vdeane on December 12, 2023, 12:35:57 PM
Freeway/freeway example - I-81 south to I-88 east (https://www.google.com/maps/@42.1284958,-75.9044606,3a,75y,166.33h,81.92t/data=!3m6!1e1!3m4!1s3dJmGThqpu02e5KVQjMXiQ!2e0!7i16384!8i8192?entry=ttu)

Is this new? I recall I-88 being signed for Exit 6, which never made much sense as it required four turns including three left turns get to I-88 EB. Turning around via Exit 5 makes much more sense, although it doesn't seem to be signed consistently at the new roundabouts.
IIRC it's signed at both.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 13, 2023, 07:52:47 PM
Quote from: vdeane on December 12, 2023, 08:41:42 PM
Quote from: webny99 on December 12, 2023, 01:06:16 PM
Quote from: vdeane on December 12, 2023, 12:35:57 PM
Freeway/freeway example - I-81 south to I-88 east (https://www.google.com/maps/@42.1284958,-75.9044606,3a,75y,166.33h,81.92t/data=!3m6!1e1!3m4!1s3dJmGThqpu02e5KVQjMXiQ!2e0!7i16384!8i8192?entry=ttu)

Is this new? I recall I-88 being signed for Exit 6, which never made much sense as it required four turns including three left turns get to I-88 EB. Turning around via Exit 5 makes much more sense, although it doesn't seem to be signed consistently at the new roundabouts.
IIRC it's signed at both.

Interestingly, Google suggests it's about 2-3 minutes faster to take NY 12/12A. I view it as more of a toss-up, especially with how congested Hinmans Corners can be and with Exit 5 no longer having signals.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: johndoe on December 15, 2023, 07:56:31 AM
The Wisconsin example reminds me of these:
https://www.aaroads.com/forum/index.php?topic=23859.0
https://images.app.goo.gl/kjioNjcze69fbu2L6
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: GaryA on December 17, 2023, 11:34:18 PM
It's in Texas, but not a normal "Texas U-Turn" -- traffic on I-20 that wants to go EB on I-10 must merge into the I-10 WB mainline and take a left exit that U-turns onto I-10 EB before the I-20 split.  (Traffic from I-10 WB to I-20 could also follow this path, but they do have a direct ramp.)  https://maps.app.goo.gl/w7waAcSzSYJb2YJt6
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 18, 2023, 09:48:05 PM
Quote from: GaryA on December 17, 2023, 11:34:18 PM
It's in Texas, but not a normal "Texas U-Turn" -- traffic on I-20 that wants to go EB on I-10 must merge into the I-10 WB mainline and take a left exit that U-turns onto I-10 EB before the I-20 split.  (Traffic from I-10 WB to I-20 could also follow this path, but they do have a direct ramp.)  https://maps.app.goo.gl/w7waAcSzSYJb2YJt6

What's interesting here is that they installed a separate ramp for I-10 WB to I-20 EB when that movement could also be made from the U-turn ramp, much like the I-287/NJ 17 example mentioned early in the thread.
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: ErmineNotyours on December 19, 2023, 12:45:19 AM
(https://live.staticflickr.com/65535/53407679545_7532fd2b0d_z.jpg) (https://flic.kr/p/2pnsjr8)

I went on a long-delayed trip to San Francisco a few months ago, and thought I had missed all the California button copy signs, until I saw the first ones halfway down I-505.  I really got a chance to see them walking from Fisherman's Warf to Larkspur, and saw this one on the freeway entrance returning from the viewing area north of the Golden Gate Bridge.  They must have figured most of the people taking the viewing area would want to drive back to town so the biggest sign at the northbound 101 entrance was instructions on how to do that.

Also, the sign is missing on the most recent Street View, but by some miracle it was restored when I visited it.  Here's the next most recent Street View: https://maps.app.goo.gl/sEyuj9hqynxsHtEf6
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: kphoger on December 19, 2023, 10:03:53 AM
Quote from: webny99 on December 18, 2023, 09:48:05 PM

Quote from: GaryA on December 17, 2023, 11:34:18 PM
It's in Texas, but not a normal "Texas U-Turn" -- traffic on I-20 that wants to go EB on I-10 must merge into the I-10 WB mainline and take a left exit that U-turns onto I-10 EB before the I-20 split.  (Traffic from I-10 WB to I-20 could also follow this path, but they do have a direct ramp.)  https://maps.app.goo.gl/w7waAcSzSYJb2YJt6

What's interesting here is that they installed a separate ramp for I-10 EB to I-20 EB when that movement could also be made from the U-turn ramp, much like the I-287/NJ 17 example mentioned early in the thread.

I-10 WB ?
Title: Re: Interchange U-Turns that are Intentional/By Design (NOT Texas U-Turns)
Post by: webny99 on December 19, 2023, 10:31:04 AM
Quote from: kphoger on December 19, 2023, 10:03:53 AM
Quote from: webny99 on December 18, 2023, 09:48:05 PM

Quote from: GaryA on December 17, 2023, 11:34:18 PM
It's in Texas, but not a normal "Texas U-Turn" -- traffic on I-20 that wants to go EB on I-10 must merge into the I-10 WB mainline and take a left exit that U-turns onto I-10 EB before the I-20 split.  (Traffic from I-10 WB to I-20 could also follow this path, but they do have a direct ramp.)  https://maps.app.goo.gl/w7waAcSzSYJb2YJt6

What's interesting here is that they installed a separate ramp for I-10 EB to I-20 EB when that movement could also be made from the U-turn ramp, much like the I-287/NJ 17 example mentioned early in the thread.

I-10 WB ?

Whoops, fixed.