Transform 285/400


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, Feb. 24 update:

Weather permitting, Georgia Department of Transportation contractors will close lanes overnight on I-285 and SR 400 for the Transform 285/400 improvement project for geotechnical site investigations and survey work. Please be aware of work vehicles on the shoulders of the roadway and those entering and exiting the work zone.

2_24 update

Click here for more project and work updates from GDOT.

Project documents:


Fact Sheet

Project Map