This time on US 52 at Elk Run (http://www.dot.state.mn.us/elkrun/ddi.html), between Oronoco and Pine Island.
Apparently it is a design-build, with the procurement process taking place last year (RFP issued June 3, award announced November 23).
Diverging diamonds are fun! I went out of my way last time I was in Springfield, MO, to navigate the one there. I also frequently drive to Minnesota; they need to put one on I-35, though, so it would be on my way... Stinkers...
Ooh! Just found out there's a new one in Branson, at an exit I use frequently on trips there. Jct US-65 / MO-248, just north of the Branson Landing roundabout.
For me the US 52/Elk Run DDI will be even more fun when I can download and study the plans for it. If it had been done as a conventional design-bid-build contract, the plans would likely be available on MnDOT's EDMS sometime around now. Since it is a design-build, the record drawings will be uploaded significantly in arrears (probably up to five years) of completion.
MnDOT sign design sheets are fun--nearly always pattern-accurate with none of that Clearview nonsense.
Not sure if I've mentioned this at all, but they are considering a Diverging Diamond in Sioux Falls, SD as well... It's at the 41st Street & I-29 interchange.
http://sddot.com/PE/projdev/planning_ss_I29Exit77.asp
There's a link to the study. It looks like they are considering a SPUI as well. Knowing that study area well, I would say either would be a huge improvement.
Also within the study, they are considering a center turn overpass at 41st & Louise, or triple left turn lanes. Either would be a first for South Dakota.