If your early August plans involve a quick zip around the Perimeter’s west side, you might want a backup route. The Georgia Department of Transportation has rescheduled a full, weekend-long shutdown of I-285 in Cobb County to Friday, August 7 at 7 p.m. through Monday, August 10 at 5 a.m.
The closure will block both northbound and southbound lanes for roughly two miles between South Atlanta Road (Exit 16) and Paces Ferry Road (Exit 18). Triple Team Traffic’s Mike Shields first learned the new dates, as reported by WSB‑TV, which noted that crews will shut the Perimeter between the two exits for the entire weekend and roll out detours once GDOT releases route maps.
The closure was originally supposed to hit this weekend, but state transportation officials hit pause because of forecasted storms, according to FOX 5 Atlanta. The station reported that GDOT did not want to risk major concrete work in wet conditions that could keep the highway from reopening on time.
What drivers need to know
When the August shutdown kicks in, drivers should expect heavy delays on surrounding roads and on whatever detours GDOT sets up. In a press release, the Georgia Department of Transportation said a single right-lane closure is already in place in the area and urged motorists to lean on the 511GA app or navigation tools for real-time traffic updates.
GDOT is not sugarcoating what a full closure means, either. The agency warned that “No traffic will be allowed on I-285 between these locations” during the weekend shutdown.
Why crews are closing the Perimeter
This is not just a one-off headache. The weekend closure is part of the multi-year I-285 Westside Rebuild project, designed to reconstruct concrete slabs, replace shoulders, and improve safety and ride quality along the corridor. FOX 5 Atlanta reports the work is a multi-million-dollar rebuild that will require multiple weekend closures through 2028.
Officials say that shutting down the interstate completely lets crews finish large concrete repairs faster than if they tried to piece the work together with partial lane closures.
Local businesses and traffic impacts
Past shutdowns have not just clogged nearby streets. They have also squeezed neighborhood businesses that rely on weekend customers. Previous full closures funneled traffic onto surface streets and left some shops and restaurants feeling the pinch.
Owners along Cascade Road reported that weekend shutdowns depressed foot traffic. As WSB‑TV noted in June, a local restaurant owner said, “It actually deterred people from coming out” during an earlier closure.
Community leaders in southwest Atlanta have been pressing officials to get clear detour plans and freight-routing guidance out ahead of each shutdown so residents and businesses are not left scrambling at the last minute.
How to stay updated
GDOT says it will publish detailed detour maps and additional guidance before the August weekend, according to the Georgia Department of Transportation. Drivers are encouraged to check 511GA and navigation apps before hitting the road and to build in extra time if their routes cross I-285 during the closure window.
