Improving the dreaded Cloverleaf

[lepidopteran]

What is the name of the type of ramp where one or more loops/left-turn movements of the cloverleaf is replaced with a lengthy ramp that runs around the interchange?  Kind of a sickle-like shape.

One example may be found in Sharonville, OH near Cincinnati, where I-75 meets I-275.  This is the ramp that handles the NB->WB movement, presumably the left with the highest traffic volume.
https://www.google.com/maps/@39.2898443,-84.4478413,15.75z

It's not really a flyover ramp since it tends to be at-grade or on fill as needed, except for when it needs to go over the intersecting roads, twice; there they tend to build ordinary highway overpasses, albeit somewhat banked and curved.  The ramp might go under the roads instead one (or both) of those times, depending on the elevations of the respective highways and the topography of the area.

[US 89]

I think you’re referring to a turbine interchange:

[MCRoads]

I have always liked those interchanges, aesthetically pleasing, functional, and NOT a cloverleaf!

[mrsman]

Are there any real life examples of this?

[yand]

Are there any real life examples of this?

If you mean turbines, this is the top result: https://www.google.com/maps/@35.3480443,-80.7329325,2023m/data=!3m1!1e3

[kendancy66]

Are there any real life examples of this?

If you mean turbines, this is the top result: https://www.google.com/maps/@35.3480443,-80.7329325,2023m/data=!3m1!1e3

I noticed that this is the I-485 and I-85 interchange near UNCC.  Did this replace the US-29 connector exit from I-85?  I panned out from there and I cant find it any more.

[kphoger]

Are there any real life examples of this?

Of a turban/turbine interchange?  I use one twice a day.  Kellogg @ I-135 here in Wichita.

[jon daly]

This form is for complaining about cloverleafs and for finding ways to make them better.


iPhone

No traffic lights...free flowing traffic...nothing wrong with them.  If they're placed in a high-volume area they will probably fail...but so will many other interchange designs.

I think that they look as beautiful from a birds-eye view as any exit-entrance can look.

[Amtrakprod]

Are there any real life examples of this?

Of a turban/turbine interchange?  I use one twice a day.  Kellogg @ I-135 here in Wichita.

Any traffic build up there?


iPhone

[kphoger]

Are there any real life examples of this?

Of a turban/turbine interchange?  I use one twice a day.  Kellogg @ I-135 here in Wichita.

Any traffic build up there?

Generally, the only traffic jams exist because Kellogg is over capacity through downtown, so traffic merging from I-135 to WB Kellogg backs up into the mainline of SB I-135.  I encounter this on a daily basis, as it's on my commute route, but I'm going from SB I-135 to EB Kellogg, so I get to take the lane that's pretty much clear.

EB Kellogg occasionally sees some traffic stack up, but generally not major.

[tolbs17]

I think that cloverleaf interchange was supposed to be part of the I-95 extension that goes through DC.

http://prntscr.com/qjinhi

[Roadsguy]

I think that cloverleaf interchange was supposed to be part of the I-95 extension that goes through DC.

http://prntscr.com/qjinhi

No, I-95 was intended to turn along New York Avenue before turning north again to closely parallel the railroad tracks. It would then turn off and run through where Fort Circle Park is now, with I-270 (then I-70S) continuing along the tracks.

Are there any real life examples of this?

If you mean turbines, this is the top result: https://www.google.com/maps/@35.3480443,-80.7329325,2023m/data=!3m1!1e3

I noticed that this is the I-485 and I-85 interchange near UNCC.  Did this replace the US-29 connector exit from I-85?  I panned out from there and I cant find it any more.

Yes. I-485 to the southeast was built in the '90s, temporarily feeding into the I-85 trumpet, with the trumpet on US 29 replaced with the existing interchange. The I-85 trumpet was replaced with the turbine when the last segment between I-77 and I-85 opened a few years ago.