I-285 & SR 400 Improvements (Transform 285/400)

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.

 ‭(Hidden)‬ Updates

 Project Info

jQuery Responsive Tabs


SR 400 Noise Barriers Final Report

Environmental Assessment & Info

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 Video Gallery


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

      Email & Phone

      (404) 609-4609 Project Hotline

      Mailing Address

      Marlo L. Clowers, P.E., DBIA
      I-285/SR 400 Project Office
      270 Carpenter Drive NE, Atlanta, GA 30328

      Speaker Request

      Want a Georgia DOT representative to speak to your organization?
      Submit Request


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      Project Updates

      Traffic Alerts & Project Updates

      Traffic alerts and project updates highlight major events of the Transform 285/400 project.

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