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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 project web page often for the latest updates. Detour information is shown using red text. Closures marked with **/++ – only one of these closures will be implemented WHEN/WHERE: Traffic Impacts on I-285 and SR 400 from August 28, through September 04, 2023 Overnight Closures:  Monday, August 28, 9 p.m. to 5 a.m. General Lane Closures & Traffic Pacings:
  • One left lane on I-285 eastbound from Glenridge Drive to Peachtree Dunwoody Road
  • Two right lanes on I-285 eastbound at Riverside Drive
  • Three left lanes on I-285 westbound from Chamblee Dunwoody Road to Ashford Dunwoody Road
  • Two left lanes on I-285 westbound at Roswell Road
  • Two right lanes on SR 400 northbound CD lanes from Hammond Drive to Abernathy Road
Closures and Detours: I-285 eastbound to SR 400 northbound (Detour Map)
  • Motorists traveling on I-285 eastbound to SR 400 northbound should use Exit 27 SR 400 southbound and Exit 3 Glenridge Connector to access SR 400 northbound.
I-285 westbound to SR 400 southbound (Detour Map)
  • Motorists traveling on I-285 westbound to SR 400 southbound should use Exit 27 SR 400 northbound and Exit 5 Abernathy Road to access SR 400 southbound.
Glenridge Drive to I-285 westbound (Detour Map)
  • Motorists traveling on Glenridge Drive south to I-285 westbound should use Hammond Drive and Roswell Road to access I-285 westbound.
  • Motorists traveling on Glenridge Connector to I-285 westbound should use Hammond Drive and Roswell Road to access I-285 westbound.
I-285 westbound CD lanes to Roswell Road (Detour Map)
  • Motorists traveling on I-285 westbound CD Lanes to Roswell Road will use Exit 24 Riverside Drive and I-285 eastbound to access Exit 25 Roswell Road.
Hammond Drive to SR 400 northbound (Detour Map)
  • Motorists traveling on Hammond Drive to SR 400 northbound should use Peachtree Dunwoody Road, Barfield Drive, and Abernathy Road to access SR 400 northbound.
SR 400 southbound to Hammond Drive (Detour Map)
  • Motorists traveling on SR 400 southbound to Hammond Drive should use Exit 5 Abernathy Road and Mercedes-Benz Drive (road changes to Barfield Road) to access Hammond Drive.
Glenridge Drive Full Closure (Detour Map)
  • Motorists traveling on Hammond Drive to I-285 westbound should use Hammond Drive and Roswell Road to access I-285 westbound.
  • Motorists traveling on Hammond Drive to Glenridge Connector should use Hammond Drive, Roswell Road, and Glenridge Drive to access Glenridge Connector.
  • Motorists traveling from I-285 eastbound to Glenridge Drive north should use Glenridge Drive, Roswell Road, and Hammond Drive to access Glenridge Drive north.
  • Motorists traveling on Johnson Ferry Road to Glenridge Drive north should use Glenridge Drive, Roswell Road, and Hammond Drive to access Glenridge Drive north.
Lake Forrest Drive at I-285 Full Closure (Detour Map)
  • Motorists traveling on Lake Forrest Drive northbound should use Northwood Drive, Kingsport Drive (road changes to Lake Placid Drive), Roswell Road, Cliftwood Drive, Sandy Springs Circle, and Allen Road to access Lake Forrest Drive northbound.
  • Motorists traveling on Lake Forrest Drive southbound should use Allen Road, Roswell Road and Northwood Drive to access Lake Forrest Drive southbound.
Tuesday, August 29, 9 p.m. to 5 a.m. General Lane Closures & Traffic Pacings:
  • One left lane on I-285 eastbound from Glenridge Drive to Peachtree Dunwoody Road
  • Two left lanes on I-285 eastbound at Roswell Road
  • Three left lanes on I-285 westbound from Chamblee Dunwoody Road to Ashford Dunwoody Road
  • Two left lanes on I-285 westbound at Roswell Road
  • Two left lanes on SR 400 northbound CD lanes from Hammond Drive to Abernathy Road
  • One right lane on SR 400 northbound from I-285 to Hammond Drive
Closures and Detours: SR 400 northbound to I-285 westbound (Detour Map)
  • Motorists traveling on SR 400 northbound to I-285 westbound should use Exit 4A I-285 eastbound and Exit 29 Ashford Dunwoody Road to access I-285 westbound.
I-285 westbound to SR 400 southbound (Detour Map)
  • Motorists traveling on I-285 westbound to SR 400 southbound should use Exit 27 SR 400 northbound and Exit 5 Abernathy Road to access SR 400 southbound.
I-285 eastbound to SR 400 southbound (Detour Map)
  • Motorists traveling on I-285 eastbound to SR 400 southbound should use Exit 27 SR 400 northbound and Exit 5 Abernathy Road to access SR 400 southbound.
Peachtree Dunwoody Road to I-285 eastbound (Detour Map)
  • Motorists traveling from Peachtree Dunwoody Road to I-285 eastbound should use Lake Hearn Drive, Hammond Drive, and Ashford Dunwoody Road to access I-285 eastbound.
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.
I-285 westbound CD lanes to Roswell Road (Detour Map)
  • Motorists traveling on I-285 westbound CD Lanes to Roswell Road will use Exit 24 Riverside Drive and I-285 eastbound to access Exit 25 Roswell Road.
Hammond Drive to SR 400 northbound (Detour Map)
  • Motorists traveling on Hammond Drive to SR 400 northbound should use Peachtree Dunwoody Road, Barfield Drive, and Abernathy Road to access SR 400 northbound.
SR 400 southbound to Hammond Drive (Detour Map)
  • Motorists traveling on SR 400 southbound to Hammond Drive should use Exit 5 Abernathy Road and Mercedes-Benz Drive (road changes to Barfield Road) to access Hammond Drive.
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.
I-285 westbound to Roswell Road (Detour Map)
  • Motorists traveling on I-285 westbound to Roswell Road should use Exit 24 Riverside Drive and I-285 eastbound to access Exit 25 Roswell Road.
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.
Abernathy Road Full Closure (Detour Map)
  • Motorists traveling on Abernathy Road eastbound should use Mercedes-Benz Drive (road changes to Barfield Road), Mount Vernon Highway, and Peachtree Dunwoody Road to access Abernathy Road.
  • Motorists traveling on Abernathy Road westbound should use Peachtree Dunwoody Road, Mount Vernon Highway, and Barfield Road (road changes to Mercedes-Benz Drive) to access Abernathy Road.
  • Motorists traveling on SR 400 northbound to Abernathy Road westbound should use Abernathy Road, Peachtree Dunwoody Road, Mount Vernon Highway, and Barfield Road (road changes to Mercedes-Benz Drive) to Abernathy Road westbound.
  • Motorists traveling on SR 400 southbound to Abernathy Road eastbound should use Abernathy Road, Mercedes-Benz Drive (road changes to Barfield Road), Mount Vernon Highway, and Peachtree Dunwoody Road to access Abernathy Road eastbound.
Lake Forrest Drive at I-285 Full Closure (Detour Map)
  • Motorists traveling on Lake Forrest Drive northbound should use Northwood Drive, Kingsport Drive (road changes to Lake Placid Drive), Roswell Road, Cliftwood Drive, Sandy Springs Circle, and Allen Road to access Lake Forrest Drive northbound.
  • Motorists traveling on Lake Forrest Drive southbound should use Allen Road, Roswell Road and Northwood Drive to access Lake Forrest Drive southbound.
Wednesday, August 30, 9 p.m. to 5 a.m. General Lane Closures & Traffic Pacings:
  • One left lane on I-285 eastbound from Glenridge Drive to Peachtree Dunwoody Road
  • Two right lanes on I-285 eastbound at Roswell Road
  • Three left lanes on I-285 westbound from Chamblee Dunwoody Road to Ashford Dunwoody Road
  • Two left lanes on I-285 westbound at Roswell Road
  • Two left lanes on SR 400 northbound CD lanes from Hammond Drive to Abernathy Road
  • One right lane on SR 400 northbound from I-285 to Hammond Drive
Closures and Detours: ++ I-285 eastbound to SR 400 northbound (Detour Map)
  • Motorists traveling on I-285 eastbound to SR 400 northbound should use Exit 27 SR 400 southbound and Exit 3 Glenridge Connector to access SR 400 northbound.
SR 400 northbound to I-285 westbound (Detour Map)
  • Motorists traveling on SR 400 northbound to I-285 westbound should use Exit 4A I-285 eastbound and Exit 29 Ashford Dunwoody Road to access I-285 westbound.
++ I-285 eastbound to SR 400 southbound (Detour Map)
  • Motorists traveling on I-285 eastbound to SR 400 southbound should use Exit 27 SR 400 northbound and Exit 5 Abernathy Road to access SR 400 southbound.
Peachtree Dunwoody Road to I-285 eastbound (Detour Map)
  • Motorists traveling from Peachtree Dunwoody Road to I-285 eastbound should use Lake Hearn Drive, Hammond Drive, and Ashford Dunwoody Road to access I-285 eastbound.
I-285 westbound CD lanes to Roswell Road (Detour Map)
  • Motorists traveling on I-285 westbound CD Lanes to Roswell Road will use Exit 24 Riverside Drive and I-285 eastbound to access Exit 25 Roswell Road.
Hammond Drive to SR 400 northbound (Detour Map)
  • Motorists traveling on Hammond Drive to SR 400 northbound should use Peachtree Dunwoody Road, Barfield Drive, and Abernathy Road to access SR 400 northbound.
** SR 400 southbound to Hammond Drive (Detour Map)
  • Motorists traveling on SR 400 southbound to Hammond Drive should use Exit 5 Abernathy Road and Mercedes-Benz Drive (road changes to Barfield Road) to access Hammond Drive.
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.
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.
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.
Abernathy Road Full Closure (Detour Map)
  • Motorists traveling on Abernathy Road eastbound should use Mercedes-Benz Drive (road changes to Barfield Road), Mount Vernon Highway, and Peachtree Dunwoody Road to access Abernathy Road.
  • Motorists traveling on Abernathy Road westbound should use Peachtree Dunwoody Road, Mount Vernon Highway, and Barfield Road (road changes to Mercedes-Benz Drive) to access Abernathy Road.
  • Motorists traveling on SR 400 northbound to Abernathy Road westbound should use Abernathy Road, Peachtree Dunwoody Road, Mount Vernon Highway, and Barfield Road (road changes to Mercedes-Benz Drive) to Abernathy Road westbound.
  • Motorists traveling on SR 400 southbound to Abernathy Road eastbound should use Abernathy Road, Mercedes-Benz Drive (road changes to Barfield Road), Mount Vernon Highway, and Peachtree Dunwoody Road to access Abernathy Road eastbound.
Lake Forrest Drive at I-285 Full Closure (Detour Map)
  • Motorists traveling on Lake Forrest Drive northbound should use Northwood Drive, Kingsport Drive (road changes to Lake Placid Drive), Roswell Road, Cliftwood Drive, Sandy Springs Circle, and Allen Road to access Lake Forrest Drive northbound.
  • Motorists traveling on Lake Forrest Drive southbound should use Allen Road, Roswell Road and Northwood Drive to access Lake Forrest Drive southbound.
Thursday, August 31, 9 p.m. to 5 a.m. General Lane Closures & Traffic Pacings:
  • One left lane on I-285 eastbound from Glenridge Drive to Peachtree Dunwoody Road
  • Two right lanes on I-285 eastbound at Roswell Road
  • Three left lanes on I-285 westbound from Chamblee Dunwoody Road to Ashford Dunwoody Road
  • Two left lanes on I-285 westbound at Roswell Road
  • Two left lanes on SR 400 northbound CD lanes from Hammond Drive to Abernathy Road
  • One right lane on SR 400 northbound from I-285 to Hammond Drive
Closures and Detours: ++ I-285 eastbound to SR 400 northbound (Detour Map)
  • Motorists traveling on I-285 eastbound to SR 400 northbound should use Exit 27 SR 400 southbound and Exit 3 Glenridge Connector to access SR 400 northbound.
SR 400 northbound to I-285 westbound (Detour Map)
  • Motorists traveling on SR 400 northbound to I-285 westbound should use Exit 4A I-285 eastbound and Exit 29 Ashford Dunwoody Road to access I-285 westbound.
++ I-285 eastbound to SR 400 southbound (Detour Map)
  • Motorists traveling on I-285 eastbound to SR 400 southbound should use Exit 27 SR 400 northbound and Exit 5 Abernathy Road to access SR 400 southbound.
Peachtree Dunwoody Road to I-285 eastbound (Detour Map)
  • Motorists traveling from Peachtree Dunwoody Road to I-285 eastbound should use Lake Hearn Drive, Hammond Drive, and Ashford Dunwoody Road to access I-285 eastbound.
I-285 westbound CD lanes to Roswell Road (Detour Map)
  • Motorists traveling on I-285 westbound CD Lanes to Roswell Road will use Exit 24 Riverside Drive and I-285 eastbound to access Exit 25 Roswell Road.
Hammond Drive to SR 400 northbound (Detour Map)
  • Motorists traveling on Hammond Drive to SR 400 northbound should use Peachtree Dunwoody Road, Barfield Drive, and Abernathy Road to access SR 400 northbound.
** SR 400 southbound to Hammond Drive (Detour Map)
  • Motorists traveling on SR 400 southbound to Hammond Drive should use Exit 5 Abernathy Road and Mercedes-Benz Drive (road changes to Barfield Road) to access Hammond Drive.
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.
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.
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.
Abernathy Road Full Closure (Detour Map)
  • Motorists traveling on Abernathy Road eastbound should use Mercedes-Benz Drive (road changes to Barfield Road), Mount Vernon Highway, and Peachtree Dunwoody Road to access Abernathy Road.
  • Motorists traveling on Abernathy Road westbound should use Peachtree Dunwoody Road, Mount Vernon Highway, and Barfield Road (road changes to Mercedes-Benz Drive) to access Abernathy Road.
  • Motorists traveling on SR 400 northbound to Abernathy Road westbound should use Abernathy Road, Peachtree Dunwoody Road, Mount Vernon Highway, and Barfield Road (road changes to Mercedes-Benz Drive) to Abernathy Road westbound.
  • Motorists traveling on SR 400 southbound to Abernathy Road eastbound should use Abernathy Road, Mercedes-Benz Drive (road changes to Barfield Road), Mount Vernon Highway, and Peachtree Dunwoody Road to access Abernathy Road eastbound.
Lake Forrest Drive at I-285 Full Closure (Detour Map)
  • Motorists traveling on Lake Forrest Drive northbound should use Northwood Drive, Kingsport Drive (road changes to Lake Placid Drive), Roswell Road, Cliftwood Drive, Sandy Springs Circle, and Allen Road to access Lake Forrest Drive northbound.
  • Motorists traveling on Lake Forrest Drive southbound should use Allen Road, Roswell Road and Northwood Drive to access Lake Forrest Drive southbound.
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For real-time construction & traffic conditions, visit 511ga.org or download the Georgia 511 app (available in Google Play and Apple App Store).

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