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[CtrlAltDel]

I was looking at the I-85 / I-285 interchange in Georgia northeast of Atlanta, and it jumped out as extraordinarily complex:



Then, I turned off the labels and made this picture, and it lost a bit of that, but still, I was curious as to the most complex interchanges, of whatever sort you might find interesting, that you know of.

[TheHighwayMan394]

A classic Spaghetti Junction in Downtown East Minneapolis (I-35W/I-94/TH 55 [Hiawatha Ave]/several city streets)

https://www.google.com/maps/place/Minneapolis,+MN/@44.9677722,-93.2574015,16.25z/data=!4m6!3m5!1s0x52b333909377bbbd:0x939fc9842f7aee07!8m2!3d44.977753!4d-93.2650108!16zL20vMGZwendm?entry=ttu

[1995hoo]

The HOV ramps make the Springfield Interchange look more complex than it really is.

[Henry]

This one near the O'Hare Airport is as complex as you can get:

https://www.google.com/maps/@41.9868276,-87.8640724,15.77z?entry=ttu

You'll find interchanges between I-90, I-190, I-294 and some local roads.

[SkyPesos]

Every NJ Turnpike interchange north of I-287

[mgk920]

I would say the Golden Glades interchange in Florida.

Mike

[1995hoo]

Every NJ Turnpike interchange north of I-287

I once read a fairly apt description of New Jersey interchange design: Start with a relatively common design and then just tack on as many extra ramps as you require to accomplish your goal. The interchange between the Turnpike, I-287, and NJ-440 is a pretty good example of that because you can see the two relatively common designs quite easily.

[catch22]

In my working days, I had to fly into Newark once or twice a year.  This may not be the most complex, but it messed me up more than once.

https://goo.gl/maps/9UQSfnBQkxNtvYHr6

[wanderer2575]

I-96/I-275/I-696/M-5 in Novi and Farmington Hills.  This started as a simple half interchange (westbound entry, eastbound exit) between I-96 to the west and I-696 and I-96 (now M-5) to the east, which still exists in the center of the whole thing.  More ramps were added as the other freeways were built; first I-275 to the south in 1976 and then M-5 to the north in 1994.

[Bitmapped]

For an interchange between two run-of-the-mill freeways, the I-77/US 30 interchange in Canton, OH is fairly complex:
https://goo.gl/maps/e4etFHnjsfyfnRGU7

In Frederick, MD, the interchange complex between I-70/I-270/US 15/US 340 is pretty complex and even has another interchange nested inside it:
https://goo.gl/maps/hWBMC7oMuErHYWsFA

[bing101]

Here are the top ones for California's most complex Interchanges

1. Orange Crush Interchange in the Garden Grove, Anaheim areas where I-5, CA-22 and CA-57 Meet  https://en.wikipedia.org/wiki/Orange_Crush_interchange
2. Kellogg Interchange in the Pomona area where the I-10, CA-57, CA-71 meet https://en.wikipedia.org/wiki/Kellogg_Interchange
3. The East LA Interchange where the CA-60, US-101, I-5, I-10, El Monte Busway meets
4.The MacArthur Maze in Oakland where I-80, I-880 and I-580 meets.

[jmacswimmer]

The I-66/I-495 was already somewhat complicated after the 495 express lanes were constructed a decade ago, but has reached another level now with the newly-built 66 express lanes. Ramps upon ramps to provide every possible transition from general lanes to toll lanes and vice versa on both routes.

[epzik8]

Every NJ Turnpike interchange north of I-287

I-78...ugh...

[1995hoo]

The I-66/I-495 was already somewhat complicated after the 495 express lanes were constructed a decade ago, but has reached another level now with the newly-built 66 express lanes. Ramps upon ramps to provide every possible transition from general lanes to toll lanes and vice versa on both routes.

I somewhat view that as "Springfield Junior."

[dlsterner]

If you're willing to consider interchanges outside the US, there is this beauty in China - the Guiyang Qianchun overpass:

[andrepoiy]

This monstrosity outside of Newark Airport:



link: https://www.google.ca/maps/@40.7095132,-74.1741877,1749m/data=!3m1!1e3?entry=ttu



In Ontario, I would nominate these two to be the most complex in the province:

[CtrlAltDel]

This monstrosity outside of Newark Airport:

link: https://www.google.ca/maps/@40.7095132,-74.1741877,1749m/data=!3m1!1e3?entry=ttu

It is no mean feat to get to those hotels from the terminal!

[mgk920]

That's one of the biggest things hat I have always disliked about New Jersey, there are often few or no facilities for legal non-motorized local access to or between properties.

Mike

[JustDrive]

US 101 at Cesar Chávez/Potrero/Bayshore Blvd is pretty complex.

[bing101]

The Newhall Interchange in Sylmar, CA is where I-5, CA-14 and I-210 is complex on its own level because theres Truck Lanes included.


https://en.wikipedia.org/wiki/Newhall_Pass_interchange

[jgb191]

The I-35E/I-635 interchange between Dallas and Carrollton looks like ramps going all over the place for a single interchange between two intersecting interstate highways; same goes for I-35W/I-820 north of Ft. Worth.  The combination of main lanes, express lanes, and HOV lanes make them look quite complicated to tell where each ramp goes.

[JKRhodes]

I-15 at I-80 east, 201 Freeway, 2100 South and West Temple in SLC is quite an impressive spaghetti bowl.

[jlam]

How about this interchange in Denver:



maps.google.com/@39.8237067,-104.9779801,3060m/data=!3m1!1e3?entry=ttu

It wasn't too bad before I-270 reached I-25, and I-76 was extended west to I-70:

[Rothman]

How about this interchange in Denver:



maps.google.com/@39.8237067,-104.9779801,3060m/data=!3m1!1e3?entry=ttu

It wasn't too bad before I-270 reached I-25, and I-76 was extended west to I-70:

That's just three interchanges.  The MacArthur Maze is a better example of what you're trying to show as complex, though.

[formulanone]

This monstrosity outside of Newark Airport:

link: https://www.google.ca/maps/@40.7095132,-74.1741877,1749m/data=!3m1!1e3?entry=ttu

It is no mean feat to get to those hotels from the terminal!

What a terrible place to try to get...sleep? You know, the daily event animals and humans perform when they can't stay awake for over 18 hours at a time before making terrible decisions.