Road Work Advisory

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Lane and Road Closures and Special Alerts Impacting Your Drive around Sandy Springs  



Weather permitting, Georgia Department of Transportation construction partners will close the GA400 southbound ramps to I-285 eastbound for geotechnical investigations. Traffic will be detoured with signage indicating the new route. Uniformed officers will assist with traffic control.

Monday, September 25 through Wednesday, September 27, nightly from 9 p.m. to 5 a.m.

Detour GA 400 southbound to I-285 East

The GA 400 southbound entrance ramp to I-285 eastbound will close. Motorists traveling on GA 400 southbound to I-285 eastbound will be detoured to exit at the Glenridge Connector. Motorists will then be directed to GA 400 northbound to continue to the I-285 eastbound exit.

Click Here to View the City's Traffic Watch Map

Upcoming Weekend Closures & Activity from the GA Dept of Transportation

         Metro Lane Closures:

·         Statewide Lane Closures:      

·         Special Events:


Transform  285/400 PROJECT:

Guardrail repairs and subsurface utility investigations are scheduled for next week, which will result in the following street and lane closures:

  • SR 400 southbound entrance ramp to I-285 east will close from 9 p.m. to 5 a.m. on 9/20-9/22; SR 400 southbound to I-285 eastbound will be detoured to exit at the Glenridge Connector to SR 400 northbound. Traffic will continue to the I-285 eastbound exit

transform 285/400 Sept 22 2017

Note: all dates are subject to change 


 Detour Route to 285E 8.6.17 Detour Route to from 285 WB to SR400 SB Mount Vernon Detour 9.17.17

Upcoming Construction: Mt. Vernon Highway Bridge

Watch for work crews around Mount Vernon Bridge this summer as the first major element of the Transform 285/400 improvement project gets underway. Georgia Department of Transportation (Georgia DOT) construction partners began utility relocations around the Mount Vernon Highway bridge over SR 400 in May.


Five Things You Need to Know:

  1. Contractors will widen Mount Vernon Highway bridge from two to four lanes.
  2. The new lanes on the north side will be built alongside the existing bridge. Later, traffic will shift to the new bridge and the southern side of the bridge will be constructed.
  3. A new median will separate the lanes on Mount Vernon Highway from Barfield Road to Crestline Parkway.
  4. The bridge will remain open with periodic daytime and nighttime closures on Mount Vernon Highway and SR 400.
  5. Pedestrian access will be maintained throughout construction and the new bridge will have 10-foot wide sidewalks on each side and five-foot-wide bike lanes.

Mt Vernon Bridge Construction Schedule

Click here to view all materials related to this GA Dept. of Transportation project. 

transform 285/400 graphic

For issues or questions related to this project, please call the GDOT Hotline at 404-609-4609 or email

285_400 Project Maps 9.13.16   285_400 Project Fact Sheet 10.27.16
285_400 FAQs 11.2.16

Mt Vernon Fact Sheet



Mt Vernon Bridge Project 

 Whenever you approach a work zone: slow down; allow extra distance between vehicles; read signs; obey road crew flaggers, and expect the unexpected.  For updated information about travel conditions on Georgia’s interstates and state routes, GDOT advises travelers to call 511 or consult before heading out. Georgia 511 is a free service that provides real-time traffic and travel information statewide. Callers also can transfer to operators to request assistance or report incidents 24 hours a day, seven days a week.

Work in the Perimeter Area and interested in commuting options? Check the Perimeter Connects program for details.   

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