Are there any massive loop ramps in your area? This one (https://www.google.com/maps/@43.1400181,-77.668549,3a,75y,343.35h,91.17t/data=!3m6!1e1!3m4!1sNzrWCLcDshzhFJLyk4sM5A!2e0!7i13312!8i6656) (I-390 Exit 19) is not notable for its size, but rather the fact that there are businesses inside of it. This one (https://www.google.com/maps/@42.909285,-78.7689188,3a,75y,284.47h,86.2t/data=!3m6!1e1!3m4!1s7dty18Zb4RAXvgHI12qs2w!2e0!7i13312!8i6656) (Walden Ave. at I-90) also has an intense amount of stuff going on inside the loop.
Any other loop ramps that either form extremely large loops, or have a lot going on inside of them?
Enough with the out-of-topic commentary! --sso
The HOV ramp at the Springfield Interchange. Bonus points for being a reversible ramp.
https://goo.gl/maps/RN4CPA4Ffiw
Westbound WI 29 to southbound US 53 is pretty big.
https://www.google.com/maps/@42.2084049,-71.7857968,16.5z
US 20/MA 146 onto I-90 W/B, a 450 degree loop ramp.
kind of
https://www.google.com/maps/@41.9997803,-88.0251288,301a,35y,8.26h,39.39t/data=!3m1!1e3
an other kind of more of an loop
https://www.google.com/maps/@41.9810599,-87.8653469,635a,35y,8.26h,39.29t/data=!3m1!1e3
at grade road maintenance area crossing
https://www.google.com/maps/@42.3787721,-87.9470713,430a,35y,8.26h,39.34t/data=!3m1!1e3
more of an oval
https://www.google.com/maps/@41.7568149,-87.8936406,671a,35y,8.26h,39.27t/data=!3m1!1e3
mixed with local roads
https://www.google.com/maps/@42.0059448,-87.8691031,651a,35y,8.26h,39.28t/data=!3m1!1e3
mixed with local roads
https://www.google.com/maps/@42.0365069,-87.8688923,375a,35y,8.26h,39.37t/data=!3m1!1e3
Wyandotte County, KS
I-435 and K32.
https://www.google.com/maps/@39.0650518,-94.7917408,867m/data=!3m1!1e3 (https://www.google.com/maps/@39.0650518,-94.7917408,867m/data=!3m1!1e3)
I-635 and K32
https://www.google.com/maps/@39.090904,-94.6797855,867m/data=!3m1!1e3 (https://www.google.com/maps/@39.090904,-94.6797855,867m/data=!3m1!1e3)
M6 / M69 junction near Coventry, England (~1110 ft diameter). One of many large loop ramps in the UK.
https://goo.gl/CfN1LM
(https://i.imgur.com/8x4UBwk.png)
Are we really counting folded diamond junctions (Parclo AB2)? I would think only Parclo A4/B4 junctions would apply for this, since those loops are completely standalone, and not part of a two-way section with slip lanes at the end of the ramp.
QuoteAre we really counting folded diamond junctions (Parclo AB2)? I would think only Parclo A4/B4 junctions would apply for this, since those loops are completely standalone, and not part of a two-way section with slip lanes at the end of the ramp.
Any ramp that a] has one of the two features mentioned in the OP, and b] makes at least a 180 degree turn, qualifies, as far as I'm concerned. I will not prevent others from setting their own standards, but don't see what difference it makes if it is a folded diamond or not, if it is divided or not, etc.
A few examples come to mind.....not necessarily "loops" but still abnormally long ramps..
I-64 at IL 1: https://goo.gl/maps/746jXrz5WFE2
I-70 at IN 63: https://goo.gl/maps/TgHZM9tNU3G2
I-65 at IN 38: https://goo.gl/maps/UR2FTAvZnuS2
Sorry this is all I have around here:
https://www.google.com/maps/@35.093709,-77.0357362,306m/data=!3m1!1e3?hl=en (https://www.google.com/maps/@35.093709,-77.0357362,306m/data=!3m1!1e3?hl=en)
It is possible, with a good handling car, to maintain 50+ all the way around that loop-I just wouldn't advise it though, unless you are into 30 seconds of constant G loading!
Quote from: webny99 on December 28, 2017, 09:17:11 PM
Quote from: jakeroot on December 28, 2017, 08:58:44 PM
Are we really counting folded diamond junctions (Parclo AB2)? I would think only Parclo A4/B4 junctions would apply for this, since those loops are completely standalone, and not part of a two-way section with slip lanes at the end of the ramp.
Any ramp that a] has one of the two features mentioned in the OP, and b] makes at least a 180 degree turn, qualifies, as far as I'm concerned. I will not prevent others from setting their own standards, but don't see what difference it makes if it is a folded diamond or not, if it is divided or not, etc.
If we're going to set our own standards, I'd like to see some sort of "average diameter" measurement considered for figuring out which loop is the largest.
For example, considering this loop...
Quote from: Throckmorton on December 28, 2017, 07:57:13 PM
Wyandotte County, KS
I-435 and K32.
https://www.google.com/maps/@39.0650518,-94.7917408,867m/data=!3m1!1e3 (https://www.google.com/maps/@39.0650518,-94.7917408,867m/data=!3m1!1e3)
...the average diameter of the loop is 1053 feet (1655 N/S diameter and 452 E/W diameter). Loops with perfect circles need only be measured once, but loops with varying curves should be measured in various points to determine the average diameter.
I'm sure a better way of figuring out the largest loop is to figure out the square footage, but ain't nobody got time for that.
Quote from: webny99 on December 28, 2017, 03:45:22 PM
Any other loop ramps that either form extremely large loops, or have a lot going on inside of them?
I-64 at the Busch Gardens interchange, this is a new interchange that was added about 2005. The big loop ramp from WB I-64 to the connector highway to US-60, is comfortably drivable at 50 mph, and is 2 lanes wide.
https://tinyurl.com/ydfavokm
Please do not use public forum space to argue over petty things. Take it private please. Thank you. --sso
https://www.google.com/maps/@44.5825955,-89.6125209,1346a,35y,39.01t/data=!3m1!1e3
Pretty large trumpet connecting two freeways - the size of the trumpet permits navigation at 45-55 mph on the loop ramp.
Not a loop for all ramps but I'd nominate I-39/I-55 in Normal, IL. It is a longer than usual ramp.
Also the I-5 southbound to I-205 northbound in Tualatin, OR is a mile long but it is also not a loop.
https://www.google.com/maps/@36.1360714,-83.2787342,852m/data=!3m1!1e3?hl=en&authuser=0
The recently rebuilt I-81 at US-25E(Exit 8) interchange definitly fits the OP's description, especially when compared to the original interchange.
I-55 & Arsenal Road (https://goo.gl/maps/5iMNwx77Ejv), near Elwood, IL. Rather large so that trucks and easily enter I-55 north.
I-290 & York Road (https://goo.gl/maps/xYoDYAyxxYv), Elmhurst, IL. A pump station in the middle.
I-39/90 & Bus US-20 (https://goo.gl/maps/gWCTFLtbVYw), Rockford, IL. Part of a maintenance facility in the middle.
I-65 & I-90 (https://goo.gl/maps/ifWtUuG54492), Gary, IN. A rather large loop with toll facilities in the middle.
For shits and giggles, the other end of the scale for loop ramp size:
I-57 & IL-17 (https://goo.gl/maps/y5uQRpw2JvL2), Kankakee, IL.
https://www.google.com/maps/@40.5267792,-74.2968014,1892a,35y,38.95t/data=!3m1!1e3?hl=en
Here is the NJ Turnpike to Garden State Parkway connection - quite elongated with the toll facility within.
https://www.google.com/maps/@41.7023658,-86.2553223,1731a,35y,38.96t/data=!3m1!1e3?hl=en
Indiana toll road to N. Dixie Way in South Bend. Not a loop ramp but a very long closed system access point on a toll road.
Quote from: SSOWorld on December 29, 2017, 11:34:47 AM
https://www.google.com/maps/@41.7023658,-86.2553223,1731a,35y,38.96t/data=!3m1!1e3?hl=en
Indiana toll road to N. Dixie Way in South Bend. Not a loop ramp but a very long closed system access point on a toll road.
At one time, this would've been a loop ramp as well. The current intersection at Bus US-31/IN-933/Michigan Road was a small trumpet as well.
CT 2/3 interchange, Glastonbury and East Hartford, CT (https://goo.gl/maps/GUAoNNJ3noH2). Driving the "inside loop" of the trumpet is about 0.8 miles long. If this were a perfectly circular trumpet loop, the radius would be about 600 feet.
Large loops are pretty scarce in CA; most, even within freeway-to-freeway interchanges, max out at a radius that'll at best support 30 mph. The one exception that I can think of is the trumpet loop from north I-15 to west CA 58 near Barstow, which is posted, IIRC, at 45 mph.
https://www.google.com/maps/place/Salem,+NH+03079/@42.7595215,-71.2348937,16z/data=!4m5!3m4!1s0x89e3aa58533cac19:0x8a27fe4fc103c4e3!8m2!3d42.7885553!4d-71.2008912
Salem NH, the on ramp onto I-93 S/B from Rockingham Park Dr. It's nearly a mile long from crossing 93 to entering it.
Quote from: jakeroot on December 28, 2017, 10:59:47 PM
I'm sure a better way of figuring out the largest loop is to figure out the square footage, but ain't nobody got time for that.
Using the distance measurement tool on Google Maps, you can get a good estimate of the square footage by tracing over the loop. I don't think that would take too much time would it? Though personally, I wouldn't want to measure the square footage of every single loop ramp in America in order to determine which one is the largest. :no:
Quote from: webny99 on December 28, 2017, 03:45:22 PM
Any other loop ramps that either form extremely large loops, or have a lot going on inside of them?
A bit relevant, so I figured it could be put in this thread.
A type of interchange called the Pinavia (no real-world examples exist) is designed specifically so that the land in the center between its loop ramps can be used for businesses, parks, etc - they have a "lot going on" inside them. The
loop ramps (or just very curvy and the whole thing looks like a loop) are also large.
(https://s-media-cache-ak0.pinimg.com/originals/b8/c6/55/b8c6553689f70ef51b2a381500319ed0.jpg)
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fpinavia.com%2Fcontent%2Fimages%2FBut4_try7_color_su_gyliu_K.jpg&hash=946072e8f5d46f1b8f565addd47043904fe6b3e9)
As you can see in the above image, the center space is empty and can be utilized. I could see a large central rest stop being put there between a junction of two rural interstates.
Quote from: index on December 30, 2017, 04:35:40 PM
A type of interchange called the Pinavia (no real-world examples exist) is designed specifically so that the land in the center between its loop ramps can be used for businesses, parks, etc - they have a "lot going on" inside them.
Unrelated, but I don't get the appeal of the Pinavia interchange...
- has left-side entrances (an obsolete idea), and
- the thru-traffic has to proceed through two curves, which can slow down traffic and create an unnecessary bottleneck.
Just built a turbine interchange. The turning movements proceed through a similar set of curves, but entrances are from the right-hand side, and through traffic doesn't have to go through curves. And why does stuff have to be built in the middle of the interchange? Why does that concept appeal to some people? Seems like a gigantic wall around the estate would make it difficult to reach.
^ Note that there are no real life examples yet :D There's probably good reason for that. Also, none of those ramps are technically loops.
It's an interesting concept, and would definitely be on my bucket list if it did exist, especially with something like a service area in the middle. But perhaps better off as a thread of its own, given the novelty!
Regarding measuring the size of loops, is there a trick to measuring linear distance on Google Maps? I can't seem to figure it out, probably overlooking something obvious. Another option would be to plan a route from one end of the loop to the other. It would be measured in miles instead of feet, but considerably simpler overall.
Quote from: webny99 on December 30, 2017, 11:26:49 PM
Regarding measuring the size of loops, is there a trick to measuring linear distance on Google Maps? I can't seem to figure it out, probably overlooking something obvious. Another option would be to plan a route from one end of the loop to the other. It would be measured in miles instead of feet, but considerably simpler overall.
If you use the "measure distance" tool, you can add in points to the line. I haven't yet found a maximum number of points.
(https://i.imgur.com/BHnQIbk.png)
The one that stands out to me is US-93 NB to I-84 WB (heavily used for Twin Falls to Boise traffic; worth noting it's a ramp from a 60 MPH divided highway to an 80 MPH freeway). Roughly 1500 ft in diameter and 0.7 miles in length (not counting the long acceleration lane over the bridge, just the loop part).
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fimgur.com%2FbnSanFTl.png&hash=c14f36e848e546181133182d228bdb3845669f11)
https://www.google.com/maps/@42.6421534,-114.4449398,15.5z
Signed for advisory 35 MPH but I'm pretty sure you can go much faster (but I've only driven it once).
Winner?
http://mapper.acme.com/?ll=39.05575,-82.01929&z=16&t=S (http://mapper.acme.com/?ll=39.05575,-82.01929&z=16&t=S)
US 33, OH 7, OH 124 in southern Ohio.
It's like 3/4 miles long.
The northern junction of I-39 and US 10:
http://mapper.acme.com/?ll=44.59331,-89.60990&z=15&t=S (http://mapper.acme.com/?ll=44.59331,-89.60990&z=15&t=S)
From the overpass to the gore is about a mile.
Quote from: slorydn1 on December 28, 2017, 09:33:02 PM
Sorry this is all I have around here:
https://www.google.com/maps/@35.093709,-77.0357362,306m/data=!3m1!1e3?hl=en (https://www.google.com/maps/@35.093709,-77.0357362,306m/data=!3m1!1e3?hl=en)
It is possible, with a good handling car, to maintain 50+ all the way around that loop-I just wouldn't advise it though, unless you are into 30 seconds of constant G loading!
I'm always amazed at the sheer number of highway bridges near New Bern.
The ramp from NB I-65 to WB I-90 in Gary, IN is a 360 degree loop that also picks up traffic from US 20 and has a toll plaza on it.
Quote from: triplemultiplex on January 05, 2018, 02:35:30 PM
Winner?
[acme mapper links]
Can your computer not run
maps.google.com?
Quote from: Jordanes on January 05, 2018, 07:43:34 PM
Quote from: slorydn1 on December 28, 2017, 09:33:02 PM
Sorry this is all I have around here:
https://www.google.com/maps/@35.093709,-77.0357362,306m/data=!3m1!1e3?hl=en (https://www.google.com/maps/@35.093709,-77.0357362,306m/data=!3m1!1e3?hl=en)
It is possible, with a good handling car, to maintain 50+ all the way around that loop-I just wouldn't advise it though, unless you are into 30 seconds of constant G loading!
I'm always amazed at the sheer number of highway bridges near New Bern.
We do seem to have alot of them for a town of our size.
Quote from: jakeroot on January 06, 2018, 03:24:43 AM
Quote from: triplemultiplex on January 05, 2018, 02:35:30 PM
Winner?
[acme mapper links]
Can your computer not run maps.google.com?
Actually, if you type in
maps.google.com, you will be redirected to
www.google.com/maps.
Quote from: roadguy2 on January 06, 2018, 08:05:12 PM
Quote from: jakeroot on January 06, 2018, 03:24:43 AM
Quote from: triplemultiplex on January 05, 2018, 02:35:30 PM
Winner?
[acme mapper links]
Can your computer not run maps.google.com?
Actually, if you type in maps.google.com, you will be redirected to www.google.com/maps.
Yeah. I think the former was the original URL, but became the latter only after I became used to typing the former.
Quote from: jakeroot on January 06, 2018, 03:24:43 AM
Can your computer not run maps.google.com?
Acme has a better interface and more map options. I use it exclusively for armchair mapping.
It's not a traditional loop, but the ramp from US 15 NB to I-70 WB at Frederick MD would seem to qualify. It's a 2300 feet across and it takes 1.5 miles to traverse the loop part: https://goo.gl/maps/J9NxGA4Psrn
Quote from: triplemultiplex on January 08, 2018, 12:31:29 PM
Quote from: jakeroot on January 06, 2018, 03:24:43 AM
Can your computer not run maps.google.com?
Acme has a better interface and more map options. I use it exclusively for armchair mapping.
Very well. For me, it's lacking in two departments: historic street view, and 3D imagery, both features I use quite often. I also find the interface to be clunkier, and slightly out-of-date.
If my computer was quite old, I'd probably use it. But Google Maps has improved so dramatically in the last year, I fail to see the reason to use something else. There's an occasional glitch here and there, but for the most part, it's quite well-rounded now.
OH 696 to US 30 eastbound always seemed like a very, very out of the way ramp to me. I just measured in Google Maps using line segments around the loop ramp, and the distance from the EB/WB split of the ramp to US 30 to the merge onto US 30 is an amazing 1.36 miles, give or take a little with the line segments. The straight-line distance between those points is 1238 feet, or 0.24 miles. That is a lot of looping.
https://www.google.com/maps/@40.8284506,-83.9623677,16z
This explains why I always use old US 30/Lincoln Highway if I am leaving the Speedway station and heading east on 30. It saves over a mile at ~30 mph to instead get on the old road, sail along at 55-60, and use OH 235 to get back on US 30. (You could use one of the Township roads in between as well, but they intersect at grade and the interchange is safer to get on instead of turning left onto 30.) The only time I opted for the loop ever was when there was recent snowfall and I knew the old road would be in bad shape--not that the loop ramp was much better. It was snow-covered and you actually couldn't tell where it was sometimes because of the blowing snow. Thank goodness for the curve chevrons....
Quote from: jakeroot on January 09, 2018, 03:04:17 AM
Very well. For me, it's lacking in two departments: historic street view, and 3D imagery, both features I use quite often. I also find the interface to be clunkier, and slightly out-of-date.
If my computer was quite old, I'd probably use it. But Google Maps has improved so dramatically in the last year, I fail to see the reason to use something else. There's an occasional glitch here and there, but for the most part, it's quite well-rounded now.
Ah, so we are looking for different features in a mapping site then. I don't use streetview all that much and 3d is not how I like to view maps and aerials. What I want is to be able to quickly toggle between aerial photos and topographic maps. It's an integral part of my fictional mapping activities.
Acme has been my go-to ever since I discovered it over 10 years ago and will continue to be as long as it exist because it has what I want.
This one in western Ohio just south of Findlay could qualify. Almost looks like a running track around a football field:
https://www.google.com/maps/@40.9934181,-83.6467057,1502m/data=!3m1!1e3
Quote from: coldshoulder on January 17, 2018, 10:19:13 PM
This one in western Ohio just south of Findlay could qualify. Almost looks like a running track around a football field:
https://www.google.com/maps/@40.9934181,-83.6467057,1502m/data=!3m1!1e3
That whole interchange is huge. The southbound offramp is 3400 feet long. That's insane for a simple diamond offramp.
https://www.google.ca/maps/@43.8208507,-79.5464237,17.38z
This one here has got a pond inside of it...
Quote from: andrepoiy on January 27, 2018, 03:05:20 PM
https://www.google.ca/maps/@43.8208507,-79.5464237,17.38z
This one here has got a pond inside of it...
What impresses me about that one is not the pond, but the shape :wow: It's closer to a square than a circle.
Quote from: index on December 30, 2017, 04:35:40 PM
Quote from: webny99 on December 28, 2017, 03:45:22 PM
Any other loop ramps that either form extremely large loops, or have a lot going on inside of them?
A bit relevant, so I figured it could be put in this thread.
A type of interchange called the Pinavia (no real-world examples exist) is designed specifically so that the land in the center between its loop ramps can be used for businesses, parks, etc - they have a "lot going on" inside them. The loop ramps (or just very curvy and the whole thing looks like a loop) are also large.
(https://s-media-cache-ak0.pinimg.com/originals/b8/c6/55/b8c6553689f70ef51b2a381500319ed0.jpg)
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fpinavia.com%2Fcontent%2Fimages%2FBut4_try7_color_su_gyliu_K.jpg&hash=946072e8f5d46f1b8f565addd47043904fe6b3e9)
As you can see in the above image, the center space is empty and can be utilized. I could see a large central rest stop being put there between a junction of two rural interstates.
I remember proposing something like this and discovered that it would take about a 2 km radius of curvature to make it work at high speed and that this would add about a kilometer to the distance traveled by the through traffic if truly built out. However, if displacing the roadway in one direction or the other were desirable (like missing an unavailable tract of land or the like), it would be possible. The other problem with it is that the land acquisition was funny shaped, so, if use would likely be confined to government lands.
^^ That is likely a man-made detention or retention pond, built for environmental reasons.
Quote from: andrepoiy on January 27, 2018, 03:05:20 PM
https://www.google.ca/maps/@43.8208507,-79.5464237,17.38z
This one here has got a pond inside of it...
That is likely a man-made detention or retention pond, built for environmental reasons.
Quote from: webny99 on January 27, 2018, 05:41:20 PM
Quote from: andrepoiy on January 27, 2018, 03:05:20 PM
https://www.google.ca/maps/@43.8208507,-79.5464237,17.38z
This one here has got a pond inside of it...
What impresses me about that one is not the pond, but the shape :wow: It's closer to a square than a circle.
Looks like about half of it is not a permanent loop ramp, but rather provisions for future surface streets. On the satellite view, you can see ghost stubs for Bass Pro Mills Rd, and I'll bet the north—south section is part of a future street.
Quote from: coldshoulder on January 17, 2018, 10:19:13 PM
This one in western Ohio just south of Findlay could qualify. Almost looks like a running track around a football field:
https://www.google.com/maps/@40.9934181,-83.6467057,1502m/data=!3m1!1e3
:crazy:
Now you have me intrigued. Why is the loop like that. Reminds me of Talladega (https://www.conduit-project.org/seating_charts/talladegasuperspeedway_all.gif).
Looks like there's a ghost road extending off of Main St, so I would guess there was an old industrial zone or something to that effect? That's really freaking odd
Found a mile-long one near Miami: https://goo.gl/maps/gzPCStvL5m52
I always thought that Exit 14A on the NY Thruway had a super huge trumpet that could have been tightened some.
Speaking of trumpets the I-4 and SR 570 interchange near Polk City, FL has a really big loop on its trumpet end.
Here are two to consder too, on the New Jersey Turnpike:
Exit 14 from northbound on the Turnpike to the toll plaza leading to I-78 westbound.
The entrance ramp from the toll plaza at Exit 7A to the northbound Turnpike.