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I-285 & SR 400 Improvements

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

Traffic Alerts​​​​​​

Traffic Alerts & Project Updates

Traffic alerts and project updates highlight major events of the Transform 285/400 project. NOTE: Construction activity may occur during the days, evenings or weekends.

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There are several ways to stay informed about the Transform 285/400 Project.

Email & Phone
(404) 609-4609 Project Hotline

Mailing Address

Albert “Butch” Welch, Jr., P.E. Program Delivery Engineer
Major Projects I-285/SR 400 Project Office
270 Carpenter Drive NE, Atlanta, GA 30328

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