A couple of months ago, I reported to you (click for article) that the Perimeter Community Improvement District (PCID) is receiving a grant and a loan from the state infrastructure bank to construct a “diverging diamond” interchange at the junction of Ashford Dunwoody Road and I-285. Construction is anticipated to begin in 2011.
Below is a video of one of these interchanges. I found it to be a helpful way to see a “diverging diamond” in action. Credit goes to the Dunwoody Talk blog for finding this video.