Transform 285/400

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The Georgia Department of Transportation's 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.

Friday, April 21, update:

Weather permitting, Georgia Department of Transportation contractors will close lanes for the Transform 285/400 improvement project for geotechnical investigations and drainage cleaning, video and survey work.


4_21 update


Click here for more project and work updates from GDOT.

Project documents:


Fact Sheet

Project Map