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Transform 285/400: Traffic Impact Report

WHAT: Weather permitting, Georgia Department of Transportation construction partners will close lanes on I-285 eastbound and westbound and SR 400 northbound and southbound for activities to include roadway, noise barrier, and bridge construction. Travel restrictions include possible delays, reduced speeds, and detours in some areas. 

*NOTES: Work schedule updates can be made daily. Check the project web page often for the latest updates. Detour information is shown using red text.

Closures marked with **/++ are in conflict – only one of these closures will be implemented.

 

WHEN/WHERE: Traffic Impacts on I-285 and SR 400 from December 11, through December 18, 2023

Daytime Closures:

Wednesday, Dec. 13, 9 a.m. to 3 p.m. to Friday, Dec. 15, 9 a.m. to 3 p.m.

General Lane Closures & Traffic Pacings:

  • One lane on SR 400 southbound to I-285 eastbound CD lanes
  • One right lane on SR 400 southbound to I-285 westbound from Hammond Drive to Glenridge Drive
  • One right lane on I-285 westbound CD lanes from I-285 to Peachtree Dunwoody Road

Saturday, Dec. 16, 9 a.m. to 3 p.m. to Sunday, Dec. 17, 9 a.m. to 3 p.m.

General Lane Closures & Traffic Pacings:

  • One right lane on SR 400 southbound to I-285 westbound from Hammond Drive to Glenridge Drive
  • One/two lanes on Abernathy Road eastbound and westbound from Aria Boulevard to Barfield Road

Continuous Weekend Closures: (Friday, Dec. 15, 11 p.m. to Monday, Dec. 18, 5 a.m.)

General Lane Closures & Traffic Pacings:

  • One right lane on I-285 eastbound lanes from SR 400 to Peachtree Dunwoody Road

Closures and Detours:

I-285 westbound to Peachtree Dunwoody Road (Detour Map)

  • Motorists traveling on I-285 westbound to Peachtree Dunwoody Road should use Roswell Road, I-285 eastbound, and Ashford Dunwoody Road to access Peachtree Dunwoody Road.

Peachtree Dunwoody Road to I-285 eastbound (Detour Map)

  • Motorists traveling on Peachtree Dunwoody Road to I-285 eastbound should use Lake Hearn Drive, Hammond Drive, and Ashford Dunwoody Road to access I-285 eastbound.

Peachtree Dunwoody Road Full Closure (Detour Map)

  • Motorists traveling north on Peachtree Dunwoody Road to I-285 should use Lake Hearn Drive (road changes to Perimeter Summit Parkway) and Ashford Dunwoody Road to access I-285 eastbound and westbound.
  • Motorists traveling south on Peachtree Dunwoody Road to I-285 should use Hammond Drive and Ashford Dunwoody Road to access I-285 eastbound and westbound.
  • Motorists traveling north on Peachtree Dunwoody Road to Peachtree Dunwoody Road should use Lake Hearn Drive (road changes to Perimeter Summit Parkway), Perimeter Center Parkway and Hammond Drive to access Peachtree Dunwoody Road.
  • Motorists traveling south on Peachtree Dunwoody Road to Peachtree Dunwoody Road should use Hammond Drive, Perimeter Center Parkway, and Lake Hearn Drive to access Peachtree Dunwoody Road.
  • Motorists traveling from I-285 westbound to Peachtree Dunwoody Road south should use Hammond Drive, Perimeter Center Parkway, and Lake Hearn Drive to access Peachtree Dunwoody Road.

Overnight Closures:  

Tuesday, December 12, 11 p.m. to 5 a.m.
General Lane Closures & Traffic Pacings:

  • Two left lanes on I-285 westbound at SR 400
  • Two right lanes on I-285 westbound CD lanes from Ashford Dunwoody Road to Peachtree Dunwoody Road
  • Two left lanes on SR 400 northbound from Windsor Parkway to Glenridge Connector
  • Two right lanes on SR 400 southbound at Pitts Road
  • Pacing on SR 400 southbound at Spalding Drive
  • Two right lanes on SR 400 southbound from Mount Vernon Highway to SR 400

Closures and Detours:

SR 400 southbound to I-285 westbound (Detour Map)

  • Motorists traveling on SR 400 southbound to I-285 westbound should use Exit 4B I-285 eastbound and Exit 29 Ashford Dunwoody Road to access I-285 westbound.

I-285 eastbound to Glenridge Drive (Detour Map)

  • Motorists traveling on I-285 eastbound to Glenridge Drive should use Exit 27 SR 400 southbound and Exit 3 Glenridge Connector to access Glenridge Drive.

I-285 eastbound to Ashford Dunwoody Road (Detour Map)

  • Motorists traveling on I-285 eastbound to Ashford Dunwoody Road should use Exit 30 Chamblee Dunwoody Road and I-285 westbound to access Ashford Dunwoody Road (Exit 29).

Wednesday, December 13, 11 p.m. to 5 a.m.
General Lane Closures & Traffic Pacings:

  • Two right lanes on I-285 eastbound at Riverside Drive
  • Two right lanes on I-285 eastbound from Roswell Road to Glenridge Drive
  • Two left lanes on I-285 westbound at SR 400
  • Two right lanes on I-285 westbound CD lanes from Ashford Dunwoody Road to Peachtree Dunwoody Road
  • Three right lanes on I-285 westbound from Roswell Road to Long Island Drive
  • Two left lanes on SR 400 northbound from Windsor Parkway to Glenridge Connector
  • Three right lanes on SR 400 southbound at Spalding Drive
  • Pacing on SR 400 southbound at Spalding Drive

Closures and Detours:

SR 400 northbound Full Closure at I-285 (Detour Map)

  • Motorists traveling on SR 400 northbound should use Exit 4A I-285 eastbound and Exit 29 Ashford Dunwoody Road, and I-285 westbound and to access Exit 27A SR 400 southbound.

SR 400 southbound to I-285 westbound (Detour Map)

  • Motorists traveling on SR 400 southbound to I-285 westbound should use Exit 4B I-285 eastbound and Exit 29 Ashford Dunwoody Road to access I-285 westbound.

SR 400 southbound to I-285 eastbound (Detour Map)

  • Motorists traveling on SR 400 southbound to I-285 eastbound should use Exit 4A I-285 westbound and Exit 25 Roswell Road to access I-285 eastbound.

I-285 eastbound to Glenridge Drive (Detour Map)

  • Motorists traveling on I-285 eastbound to Glenridge Drive should use Exit 27 SR 400 southbound and Exit 3 Glenridge Connector to access Glenridge Drive.

++I-285 eastbound to Ashford Dunwoody Road (Detour Map)

  • Motorists traveling on I-285 eastbound to Ashford Dunwoody Road should use Exit 30 Chamblee Dunwoody Road and I-285 westbound to access Ashford Dunwoody Road (Exit 29).

++Roswell Road to I-285 westbound (Detour Map)

  • Motorists traveling on Roswell Road to I-285 westbound should use I-285 eastbound and Exit 29 Ashford Dunwoody Road to access I-285 westbound.

SR 400 southbound to Abernathy Road (Detour Map)

  • Motorists traveling on SR 400 southbound to Abernathy Road should use Exit 5B Hammond Drive and SR 400 northbound to access Abernathy Road.

Thursday, December 14, 11 p.m. to 5 a.m.
General Lane Closures & Traffic Pacings:

  • Three right lanes on I-285 eastbound at Roswell Road
  • Pacing on I-285 eastbound at Roswell Road
  • Two right lanes on I-285 eastbound from Roswell Road to Glenridge Drive
  • Two left lanes on I-285 westbound at SR 400
  • Two right lanes on I-285 westbound CD lanes from Ashford Dunwoody Road to Peachtree Dunwoody Road
  • Three right lanes on I-285 westbound from Roswell Road to Long Island Drive
  • Two left lanes on SR 400 northbound from Windsor Parkway to Glenridge Connector

Closures and Detours:

SR 400 northbound Full Closure at I-285 (Detour Map)

  • Motorists traveling on SR 400 northbound should use Exit 4A I-285 eastbound and Exit 29 Ashford Dunwoody Road, and I-285 westbound and to access Exit 27A SR 400 southbound.

SR 400 southbound to I-285 eastbound (Detour Map)

  • Motorists traveling on SR 400 southbound to I-285 eastbound should use Exit 4A I-285 westbound and Exit 25 Roswell Road to access I-285 eastbound.

I-285 eastbound to Glenridge Drive (Detour Map)

  • Motorists traveling on I-285 eastbound to Glenridge Drive should use Exit 27 SR 400 southbound and Exit 3 Glenridge Connector to access Glenridge Drive.

++I-285 eastbound to Ashford Dunwoody Road (Detour Map)

  • Motorists traveling on I-285 eastbound to Ashford Dunwoody Road should use Exit 30 Chamblee Dunwoody Road and I-285 westbound to access Ashford Dunwoody Road (Exit 29).

++Roswell Road to I-285 westbound (Detour Map)

  • Motorists traveling on Roswell Road to I-285 westbound should use I-285 eastbound and Exit 29 Ashford Dunwoody Road to access I-285 westbound.

Ashford Dunwoody Road to I-285 westbound (Detour Map)

  • Motorists traveling on Ashford Dunwoody Road to I-285 westbound should use I-285 eastbound and Exit 30 Chamblee Dunwoody Road to access I-285 westbound.

SR 400 southbound to Abernathy Road (Detour Map)

  • Motorists traveling on SR 400 southbound to Abernathy Road should use Exit 5B Hammond Drive and SR 400 northbound to access Abernathy Road.

Friday, December 15, 11 p.m. to 5 a.m.
General Lane Closures & Traffic Pacings:

  • Three right lanes on I-285 eastbound at Roswell Road
  • Pacing on I-285 eastbound at Roswell Road
  • Two right lanes on I-285 eastbound from Roswell Road to Glenridge Drive
  • Two left lanes on I-285 westbound at SR 400
  • Two right lanes on I-285 westbound CD lanes from Ashford Dunwoody Road to Peachtree Dunwoody Road
  • Three right lanes on I-285 westbound from Roswell Road to Long Island Drive
  • Two left lanes on SR 400 northbound from Windsor Parkway to Glenridge Connector

Closures and Detours:

SR 400 southbound to I-285 eastbound (Detour Map)

  • Motorists traveling on SR 400 southbound to I-285 eastbound should use Exit 4A I-285 westbound and Exit 25 Roswell Road to access I-285 eastbound.

I-285 eastbound to Glenridge Drive (Detour Map)

  • Motorists traveling on I-285 eastbound to Glenridge Drive should use Exit 27 SR 400 southbound and Exit 3 Glenridge Connector to access Glenridge Drive.

++I-285 eastbound to Ashford Dunwoody Road (Detour Map)

  • Motorists traveling on I-285 eastbound to Ashford Dunwoody Road should use Exit 30 Chamblee Dunwoody Road and I-285 westbound to access Ashford Dunwoody Road (Exit 29).

++Roswell Road to I-285 westbound (Detour Map)

  • Motorists traveling on Roswell Road to I-285 westbound should use I-285 eastbound and Exit 29 Ashford Dunwoody Road to access I-285 westbound.

Ashford Dunwoody Road to I-285 westbound (Detour Map)

  • Motorists traveling on Ashford Dunwoody Road to I-285 westbound should use I-285 eastbound and Exit 30 Chamblee Dunwoody Road to access I-285 westbound.

SR 400 southbound to Abernathy Road (Detour Map)

  • Motorists traveling on SR 400 southbound to Abernathy Road should use Exit 5B Hammond Drive and SR 400 northbound to access Abernathy Road.

SR 400 southbound to Glenridge Connector (Detour Map)

  • Motorists traveling on SR 400 southbound to Glenridge Connector should use Exit 2 Lenox Road and SR 400 northbound to access Exit 3 Glenridge Connector.

Saturday, December 16, 11 p.m. to 5 a.m.

Closures and Detours:

SR 400 southbound to Glenridge Connector (Detour Map)

  • Motorists traveling on SR 400 southbound to Glenridge Connector should use Exit 2 Lenox Road and SR 400 northbound to access Exit 3 Glenridge Connector.

 

Click here for more information.

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