Nicest cloverleaf?

[agentsteel53]

any that have the same width of roads intersecting each other, thereby providing complete four-way symmetry?

[Brandon]

any that have the same width of roads intersecting each other, thereby providing complete four-way symmetry?

I-69 and I-94, Marshall, Michigan:
http://maps.google.com/maps?hl=en&ie=UTF8&ll=42.297358,-84.997294&spn=0.011047,0.027466&t=k&z=16
Full C/D lanes on both interstates as well.

[yakra]

I-69 and I-94, Marshall, Michigan:
http://maps.google.com/maps?hl=en&ie=UTF8&ll=42.297358,-84.997294&spn=0.011047,0.027466&t=k&z=16
Full C/D lanes on both interstates as well.

Beauty!

[Truvelo]

Is this the only cloverleaf to have two lanes on all the ramps?

[Scott5114]

The only good cloverleaf is a dead cloverleaf.

What about this one?
http://maps.google.com/?ie=UTF8&ll=35.218592,-97.484887&spn=0.008835,0.01796&t=k&z=16

I see what you did there.

That one is going to be replaced by a SPUI in the next few years. No matter how pleasing it is from the eye, it needs to die; check out the awesome weaving that occurs at the frontage roads. ODOT tried to block it on the east side of the intersection with that white floppy thing barrier, so to go from NB I-35 to the NB E frontage road (i.e. go to Walmart) one must turn right, use the parking lot of Super 8 as a roundabout, and go back through the intersection. As the loop ramps go, the SB-to-EB movement is particularly bad as sight lines go; fender benders happen there all the time. And you can see how skanky the bridge looks from space.

(Hey, and it looks like they updated the imagery in Norman. Cool. Maybe they'll show my place of employment as complete now...it's been shown in the under-construction state since 2006...)

[bulldog1979]

any that have the same width of roads intersecting each other, thereby providing complete four-way symmetry?

I-69 and I-94, Marshall, Michigan:
http://maps.google.com/maps?hl=en&ie=UTF8&ll=42.297358,-84.997294&spn=0.011047,0.027466&t=k&z=16
Full C/D lanes on both interstates as well.

That reminds me of the US 131/M-6 interchange... which also includes ramps to and from 68th Street.

http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=Wyoming,+MI&sll=37.0625,-95.677068&sspn=64.409204,65.654297&ie=UTF8&hq=&hnear=Wyoming,+Kent,+Michigan&ll=42.848912,-85.678425&spn=0.029733,0.032058&t=h&z=15

[agentsteel53]

any that have the same width of roads intersecting each other, thereby providing complete four-way symmetry?

I-69 and I-94, Marshall, Michigan:
http://maps.google.com/maps?hl=en&ie=UTF8&ll=42.297358,-84.997294&spn=0.011047,0.027466&t=k&z=16
Full C/D lanes on both interstates as well.

uh oh, that is slanted.  I want to see one that is completely perpendicular!  yep, I'm demanding for sure.

[deathtopumpkins]

That one is going to be replaced by a SPUI in the next few years. No matter how pleasing it is from the eye, it needs to die; check out the awesome weaving that occurs at the frontage roads. ODOT tried to block it on the east side of the intersection with that white floppy thing barrier, so to go from NB I-35 to the NB E frontage road (i.e. go to Walmart) one must turn right, use the parking lot of Super 8 as a roundabout, and go back through the intersection. As the loop ramps go, the SB-to-EB movement is particularly bad as sight lines go; fender benders happen there all the time. And you can see how skanky the bridge looks from space.

Reminds me of one of our cloverleafs. Ours may be fuglier (15-mph loop ramps  ), but it also has terrible weaving issues (usually both roads are backed up), and has to deal with intense maneuvers to enter a wal-mart. They added barriers where the WB-NB ramp merges on preventing you from cutting across traffic to make the first left, encouraging you to do the exact same thing at the second left (because somehow that's better).

I personally despise cloverleafs and think they are a plague upon society that best be eliminated. Every single interchange along this stretch of I-64 is a tight cloverleaf.

[algorerhythms]

The only good cloverleaf is a dead cloverleaf.

What about this one?
http://maps.google.com/?ie=UTF8&ll=35.218592,-97.484887&spn=0.008835,0.01796&t=k&z=16

I see what you did there.

That one is going to be replaced by a SPUI in the next few years. No matter how pleasing it is from the eye, it needs to die; check out the awesome weaving that occurs at the frontage roads. ODOT tried to block it on the east side of the intersection with that white floppy thing barrier, so to go from NB I-35 to the NB E frontage road (i.e. go to Walmart) one must turn right, use the parking lot of Super 8 as a roundabout, and go back through the intersection. As the loop ramps go, the SB-to-EB movement is particularly bad as sight lines go; fender benders happen there all the time. And you can see how skanky the bridge looks from space.

(Hey, and it looks like they updated the imagery in Norman. Cool. Maybe they'll show my place of employment as complete now...it's been shown in the under-construction state since 2006...)

Hmm... I've always gone straight at the light and made a U-turn at 24th Ave. Probably illegal, but it works. Thinking of SPUIs, I noticed yesterday that the SPUIs on I-70 in Frederick, MD, are finally complete. It's only been about 15 years or so.

[Scott5114]

The only good cloverleaf is a dead cloverleaf.

What about this one?
http://maps.google.com/?ie=UTF8&ll=35.218592,-97.484887&spn=0.008835,0.01796&t=k&z=16

I see what you did there.

That one is going to be replaced by a SPUI in the next few years. No matter how pleasing it is from the eye, it needs to die; check out the awesome weaving that occurs at the frontage roads. ODOT tried to block it on the east side of the intersection with that white floppy thing barrier, so to go from NB I-35 to the NB E frontage road (i.e. go to Walmart) one must turn right, use the parking lot of Super 8 as a roundabout, and go back through the intersection. As the loop ramps go, the SB-to-EB movement is particularly bad as sight lines go; fender benders happen there all the time. And you can see how skanky the bridge looks from space.

(Hey, and it looks like they updated the imagery in Norman. Cool. Maybe they'll show my place of employment as complete now...it's been shown in the under-construction state since 2006...)

Hmm... I've always gone straight at the light and made a U-turn at 24th Ave. Probably illegal, but it works. Thinking of SPUIs, I noticed yesterday that the SPUIs on I-70 in Frederick, MD, are finally complete. It's only been about 15 years or so.

You can also go up 24th Ave to Hemphill and go in that way, which probably the most legal method, but takes the longest. You can also turn around in the Hobby Lobby parking lot or something.

[Chris]

Is this the only cloverleaf to have two lanes on all the ramps?

I have never seen anything like that.

[Troubleshooter]

This one is beautifully symmetric:



It is at the junction of US-31 and US-24 near Peru Indiana, and was built less than 10 years ago.

Before this was built, there was a twisted trumpet there that was part of a highway that lost federal funding. It was originally intended to be a cloverturbine interchange, but they never finished it. Two bridges were there that never had any traffic on them. They were demolished to make the current interchange.

[Some_Person]

This one nearby to me, with PA 33 and US 22 is the nicest and biggest in the area: http://goo.gl/maps/INeS0 although during peak hours there is problems with weaving.

It's especially nice compared to some nearby, such as this one with US 22 and PA 145: http://goo.gl/maps/g51ao

To make that second one worse, it's the highest volume interchange in the area, seeing nearly 100,000 cars a day, right next to one of the biggest malls in PA, and the highest speed on any of the 8 ramps is 25. Theres a construction project starting to make it into a parclo, which'll be a good improvement.

[kphoger]

Due in part to the geometry, and in part to the surrounding terrain:

Jct. highways 40 and 75, Saudi Arabia

[jeffandnicole]

I-295 in NJ: Exit 47 & 52:

Exit 47: http://goo.gl/maps/GLjTT

Exit 52: http://goo.gl/maps/BRoAe (Although granted, it doesn't look all that beautiful from the air as the inner loops were being used for construction staging!)

[roadman]

Perhaps the only cloverleaf in Massachusetts that potentially qualifies as "nicest" is on Route 24 at I-495 in Raynham.  Long distance between the northbound and southbound ramps (there's even a service plaza between the ramps to I-495 on the southbound side), and generally good curvature on all ramps.

[agentsteel53]

I looked at that on aerial imagery.  it seems the 24 sb to 495 nb (westbound, physically) ramp was once a RIRO - a 495 nb to 24 sb ramp also existed. 

any history on this?  was there ever an at-grade as well, or was that built as freeway from the beginning?  (either as I-495, or as MA-25)

[NE2]

I looked at that on aerial imagery.  it seems the 24 sb to 495 nb (westbound, physically) ramp was once a RIRO - a 495 nb to 24 sb ramp also existed. 

any history on this?  was there ever an at-grade as well, or was that built as freeway from the beginning?  (either as I-495, or as MA-25)

I don't see this RIRO.

The history I can find is that it was once a directional single Y, with 25 only going southeast from 24. 24 north went over 25 south about halfway between the current merge from the 495 south loop and the current bridge over 495. The wide median on 24 remains; the former route of 25 south is still partly graded north of Pleasant Street.
http://www.historicaerials.com/aerials.php?scale=2.62133569536361E-05&lat=41.945693868621&lon=-71.0226176473276&year=1971

[agentsteel53]

I don't see this RIRO.

am I misinterpreting what I see here?

http://goo.gl/maps/rQWNA

two legs of a triangle of bare earth are the current 495, and the current 24sb to 495nb ramp.  then the third leg looks like a deleted right-off.

[NE2]

I don't know. Looks coincidental.

[MDOTFanFB]

Here's another from Michigan, this time in Metro Detroit, the I-75/M-59 interchange in Auburn Hills:

http://goo.gl/maps/gYhZy

This cloverleaf opened in 1964 when I-75 was built around Pontiac, however the interchange wasn't fully utilized until M-59 was completed here in 1967.

[Roadsguy]

Theres a construction project starting to make it into a parclo, which'll be a good improvement.

Nah, it should be a SPUI. That, and the interchange with PA 987 to the east, and with PA 100 to the west of the merge with 78.

[cpzilliacus]

I don't know that it is the "nicest" (and Maryland has been taking out loops from cloverleafs to eliminate the weaving problems associated with this type of interchange), but I believe this is the only one that remains, reasonably unmodified, from the 1964 completion of the Capital Beltway - at the Baltimore Washington Parkway (Google Maps here) in Greenbelt.

There was once a pretty textbook cloverleaf interchange on the Capital Beltway at U.S. 50 (Arlington Boulevard) in Falls Church, Virginia, but the interchange has been modified several times since its original construction (I believe it had C-D lanes on the Beltway from the beginning), especially by the 1980's construction of an interchange on U.S. 50 with the new Fairview Park Drive (Google Maps here).  And on further review, the interchange just to the west, at Va. 650 (Gallows Road) was also added at some point in the 1970's or 1980's (it was once an at-grade intersection),

[PurdueBill]

I-495 east (south) of Route 24 was built as MA 25 originally, and the interchange at 24 was a wye.  495 to the west was built later and the wye became a cloverleaf.  The ramp in question may appear to be RIRO at the 495 end, but if it were RIRO, wouldn't it need to be RIRO at the other end too?  I think the clearing is for sight distance for merging; otherwise it would be a blind entry to 495.

[agentsteel53]

I think the clearing is for sight distance for merging; otherwise it would be a blind entry to 495.

good call; that's a very logical explanation