Abstract: This diverging diamond interchange, the first in Georgia, serves a diverse and vibrant commercial and residential area.
The project is intended to reduce peak hour delays along the Ashford Dunwoody arterial by separating the left and right turning traffic flows at the interchange and eliminating the left turn phases at the signals.
Construction began in September of 2011 and is projected to be complete by September of 2012. The "crossover" of the roadway will be in operation in the spring of 2012
Abstract: One of the first high-profile CFI's in the nation. Reportedly dropped delay from over 4-minutes per vehicle down to about 1-minute per vehicle.
Abstract: 2nd true Continuous Flow Intersection in the USA. Left turns from Route 228 have crossover. The crossed over lefts then enter a merge lane because southbound traffic on Indian Head Hwy is free-flowing.
Abstract: Bridge structure, but subjects all approaches to a signal (no "freeway" movements). Functions similar to Town Center Intersection (intersecting couplets), but does so vertically rather than laterally. Good choice when seeking to avoid freeway precedent, and both streets have similarly high volumes.
Won an AASHTO award for innovative design somewhere around 2002.
