[Talk-us] Divided (sic) diamond interchanges in the US

[Nathan Edgars II]

On Thu, Oct 28, 2010 at 4:27 PM, Alex Mauer <hawke at hawkesnest.net> wrote:
> I recently stumbled upon an article[1] about the new use of the divided
> diamond interchange design in the US.
>
> It seems that the first one[2] is here[3] in Missouri and as yet unmapped.
>
> A second one in the same city is here[4], and it appears that the old
> interchange hasn’t been mapped either.

It shouldn't be hard to simply 'braid' the two directions and add the
necessary curves in the ramps. It won't be precise but it will be
accurate.
Anyway http://www.modot.mo.gov/springfield/major_projects/Greene/documents/I-44-Route13DDI.pdf
has plans for the first one. The second is at US 60 and National
Avenue south of downtown Springfield; plans are here:
http://www.modot.mo.gov/springfield/major_projects/Stone/documents/NationalatJFRCorrectVersion.pdf

There's a third here: http://www.270dorsettpage.com/