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Transform 285 @ 400 Lane Closure Advisory // July 23 – Aug. 2

The Georgia Department of Transportation and its partners continue their progress on the Transform 285 @ 400 project.   

Weather permitting, GDOT will temporarily close local roads and lanes on I-285 and SR 400 between Friday, July 23 and Monday, August 2. Crews will also implement multiple detours for the Transform 285/400 Interchange project. Travel restrictions include possible delays, reduced speeds and detours in some areas. 

**Update from Georgia DOT on Continuous Closures:

  • SR 400 NB ramp to I-285 WB will be closed from Wed., July 28 at 9 p.m. until opening of the new CD lane
  • SR 400 SB ramp to I-285 WB will be closed from Fri., July 30 at 9 p.m. until the traffic switch is complete on Saturday, July 31

NOTE: A detour will be in place routing motorists to I-285 eastbound for return access to I-285 westbound from Ashford Dunwoody Road (Exit 29). Click here to view the map of each detour for your quick reference. Dates and times are subject to change due to weather or other conditions.

Click here to view the full closure details provided by Georgia DOT. 

For real-time construction & traffic conditions, visit or download the Georgia 511 app (available in Google Play and Apple App Store). 

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