Transform 285/400


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The Transform 285/400 improvement project is designed to help reduce traffic congestion and enhance safety in the area near the I-285/GA 400 interchange in metro Atlanta. This priority project adds new flyover ramps, new collector-distributor lands and other facilities to aid east-west travel along I-285 and north-south travel along GA 400.



The project will improve 4.3 miles of I-285 from west of Roswell Road to east of Ashford Dunwoody Road and 6.2 miles along SR 400 from the Glenridge Connector to Spalding Drive.



 Detours, lane changes and closures are required during construction. Georgia DOT works diligently to minimize impacts to travelers, commuters, and businesses. A significant amount of the work will be done during off-peak, nighttime hours to reduce impact on the commute to and from work as much as possible.

Frequently Asked Questions

Fact Sheet

​Project Maps


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