Spinning our Wheels

Spinning our Wheels is a commuting blog about the challenges of getting around Atlanta by car, bus, MARTA, bicycles and on foot written by transportation reporter David Wickert

More diverging diamond interchanges planned for metro area

Construction will soon finish up at the latest diverging diamond interchange to be built in metro Atlanta, at Jimmy Carter Boulevard and Interstate 85.

Since the installation of the first continuous flow interchange at Ashford Dunwoody Road and I-285 in 2012, these innovative interchanges have become increasingly popular since they improve travel times and reduce accidents. Another DDI was constructed the following year at the intersection of Pleasant Hill Road and I-85.

The Jimmy Carter Boulevard DDI opened March 29, but contractors are still installing pedestrian facilities including the sidewalks, islands, curbs and gutters.

More DDIs are planned around the metro area, including at Windy Hill Road and I-75, and I-285 at Camp Creek Parkway.

The concept of a diverging diamond is to shift traffic to the opposite side of the bridge, making left turns onto the interstate easier and improving traffic flow.

Work on the pedestrian facilities at Jimmy Carter Boulevard DDI will prompt some lane closures this week. See here for details: www.ajc.com/news/news/local/lanes-closing-for-sidewalk-construction-at-jimmy-c/nmYND/

The project is expected to be completed sometime this summer.

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