The Atlanta Journal-Constitution

Interchang­e

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Improvemen­ts to the interchang­e have been a long time coming. About 420,000 vehicles a day pass through the interchang­e, which was designed to accommodat­e 100,000.

The new interchang­e will feature new “flyover” ramps and lanes adjacent to both highways. When it’s finished, it will be almost as big as Spaghetti Junction, where I-285 meets I-85 northeast of Atlanta. The work also includes a new diverging-diamond interchang­e at Ga. 400 and Abernathy Road and a new bridge at Mount Vernon Highway.

Since constructi­on began in November 2017, orange barrels have stretched for miles along both highways. GDOT and contractor North Perimeter Contractor­s have done what they can to alleviate traffic congestion: Most of the lane closures occur at night and on weekends. But congestion has remained a problem, and it may until the work is complete.

Originally, the work was supposed to be done by this summer. Then last year, GDOT added two new I-285 bridges to the project — over Glenridge Drive and Peachtree Dunwoody Road. That pushed completion back to late 2020 or early 2021.

Now GDOT and the contractor have agreed to add even more work to the project. After consulting with the surroundin­g community, GDOT will add bike and pedestrian trails and local road improvemen­ts, agency spokeswoma­n Natalie Dale said. GDOT also will adjust its design to accommodat­e future toll lanes along the top end of the Perimeter.

GDOT also has discovered unmarked utilities that must be relocated — a common problem on large constructi­on projects, Dale said.

The combined cost of all the extra work is about $43 million. But Dale said other costs could fall, and the final price tag may yet be around the original $800 million estimate.

Dale said the constructi­on delays associated with the additional work are unavoidabl­e. But she said doing all the work now would be less disruptive than completing the interchang­e and coming back later for the additional work.

“We’re not upset for the reasons the timeline is shifting,” Dale said.

Ann Hanlon, the executive director of the Perimeter Community Improvemen­t Districts, agreed it will be better for local businesses in the long run to do all the work now. She said many employees at area companies are still working at home because of the pandemic, which has alleviated traffic congestion.

“We have a once-in-a-lifetime opportunit­y to get an amazing interchang­e built with adjacent trail connection­s,” Hanlon said. “That’s important not just to the central Perimeter (area), but to the entire metro Atlanta region.”

Snow was less angry about the delay than resigned.

“I’m glad they’re doing it. I’m looking forward to seeing how it looks when it’s over,” he said, but added, “We are in for significan­t traffic delays until this thing becomes viable.”

 ?? HYOSUB SHIN / HYOSUB.SHIN@AJC.COM ?? The I-285/Ga. 400 junction in Sandy Springs will feature “flyover” ramps and lanes adjacent to both roads and will be nearly as big as Spaghetti Junction.
HYOSUB SHIN / HYOSUB.SHIN@AJC.COM The I-285/Ga. 400 junction in Sandy Springs will feature “flyover” ramps and lanes adjacent to both roads and will be nearly as big as Spaghetti Junction.

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