variation of offset single point interchange

[johndoe]

Interesting presentation about a job in New Mexico: https://www.westernite.org/annualmeetings/16_Albuquerque/Presentations/3D_Hinckley.pdf

[NE2]

This is functionally equivalent to an interchange in Pittsburgh: http://www.google.com/maps/@40.4141769,-80.0098988,17z

[johndoe]

This is functionally equivalent to an interchange in Pittsburgh: http://www.google.com/maps/@40.4141769,-80.0098988,17z

Cool example, they really squeezed that one in!

It is pretty darn similar, although the New Mexico version makes the signal more efficient by allowing one of the off-ramp lefts to proceed at the same time as the on-ramp "right" (loop)

(see slide 18/28 in the first link ... phases 2 and 7)
...I just thought of how many northbound rights (labeled phase 1) will make the right turn into the adjacent lanes and end up back on the freeway in the same direction they just exited ha!  I wonder how they'll sign that...

[webny99]

Reminds me a lot of this interchange. Basically, the only difference is that, in the case of I-390/NY 15, the southbound off-ramp requires using East River Road, which is a two-way surface street. Also, the bottom half is partially combined with the NY 15A interchange, which makes comparing a little complicated.

It is pretty darn similar, although the New Mexico version makes the signal more efficient by allowing one of the off-ramp lefts to proceed at the same time as the on-ramp "right" (loop)

Yeah, that's the other difference compared to the one I linked as well. Other than that, it's functionally pretty much the same.

[Mark68]

I-225 and Alameda Ave in Aurora, CO.

https://goo.gl/maps/eCtnLN1ySpq

[NE2]

I-225 and Alameda Ave in Aurora, CO.

https://goo.gl/maps/eCtnLN1ySpq

What about it?

[Mark68]

I-225 and Alameda Ave in Aurora, CO.

https://goo.gl/maps/eCtnLN1ySpq

What about it?

Offset single-point interchange. That belongs in this thread, right?

[NE2]

I-225 and Alameda Ave in Aurora, CO.

https://goo.gl/maps/eCtnLN1ySpq

What about it?

Offset single-point interchange. That belongs in this thread, right?

This thread is about a variation of one.

[lordsutch]

...I just thought of how many northbound rights (labeled phase 1) will make the right turn into the adjacent lanes and end up back on the freeway in the same direction they just exited ha!  I wonder how they'll sign that...

I think striping would probably be the best way to communicate that idea, with dashed lines on both sides of the lane going diagonally across the east-to-north roadway. A turn restriction could be added later if that doesn't work.