and slide baby slide, to the left, to the left, now dip baby dip!

Earlier I covered the possibilities of this taking hold  (14th of February) and now the construction has begun:

FORT WAYNE, Ind. (21Alive) – Work to transform I-69's DuPont Road interchange into a diverging diamond begins Monday.

According to traffic engineers, a diverging diamond uses traffic signals to direct vehicles from the right side of the road to the left. They say that makes left turns as easy as a traditional right turn.

With the diverging diamond, crews will reduce the speed limit to 35 mph on DuPont Road and put in lane restrictions on the northbound I-69 off ramp to DuPont.

The $3.5 million project is estimated to take all summer and most of the fall to complete.
In the meantime, drivers can use alternative routes, such as the new Union Chapel Road interchange at Exit 317, to avoid delays.
 
http://www.indianasnewscenter.com/news/local/Construction-Of-Diverging-Diamond-On-DuPont-Begins-255108521.html