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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 September 5, through September 11, 2023 Daytime Closures: Continuous Weekend Closures: (Friday, Sept. 8, 9 p.m. to Sunday, Sept. 11, 5 a.m.) General Lane Closures & Traffic Pacings:
  • One right lane on I-285 eastbound at Ashford Dunwoody Road
Closures and Detours: 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.
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.
SR 400 northbound to I-285 eastbound (Detour Map)
  • Motorists traveling on SR 400 northbound to I-285 eastbound should use Exit 4B I-285 westbound and Exit 25 Roswell Road to access I-285 eastbound.
** 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.
** Ashford Dunwoody Road to I-285 eastbound (Detour Map)
  • Motorists traveling on Ashford Dunwoody Road to I-285 eastbound should use Perimeter Center Parkway (road changes to Lake Hearn Drive) and Peachtree Dunwoody Road to access I-285 eastbound.
Overnight Closures:  Tuesday, September 5, 9 p.m. to 5 a.m. General Lane Closures & Traffic Pacings:
  • One left lane on I-285 eastbound from SR 400 to Peachtree Dunwoody Road
  • Three right lanes on I-285 eastbound at Riverside Drive
  • Two left lanes on I-285 westbound from Roswell Road to Lake Forrest Drive
  • Three right lanes on I-285 westbound at Ashford Dunwoody
  • Two left lanes on SR 400 northbound CD lanes from Hammond Drive to Abernathy Road
  • One right lane on Abernathy Road eastbound at Mercedes-Benz Drive
  • One right lane on Abernathy Road westbound from Peachtree Dunwoody Road to SR 400
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 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.
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.
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.
Wednesday, September 6, 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
  • Three right lanes on I-285 eastbound at Riverside Drive
  • ++Two left lanes on I-285 westbound from Peachtree Dunwoody Road to SR 400
  • ++Three right lanes on I-285 westbound at Ashford Dunwoody Road
  • Two left lanes on SR 400 northbound CD lanes from Hammond Drive to Abernathy Road
  • One lane on Abernathy Road eastbound at Mercedes-Benz Drive
  • One lane on Abernathy Road to Glenlake Parkway northbound
  • One right lane on Abernathy Road westbound from Peachtree Dunwoody Road to SR 400
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 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.
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.
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.
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.
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.
** 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.
++ 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.
++ 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.
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, September 7, 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 Riverside Drive
  • ++One left lane on I-285 westbound from Peachtree Dunwoody Road to SR 400
  • ++Three right lanes on I-285 westbound at Ashford Dunwoody Road
  • One right lane on SR 400 northbound at Northland Drive
  • Two left lanes on SR 400 northbound CD lanes from Hammond Drive to Abernathy Road
  • One right lane on SR 400 southbound from Hammond Drive to I-285
  • One lane on Abernathy Road to Glenlake Parkway northbound
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 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.
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.
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.
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.
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.
++ 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.
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.
++ 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.
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.
Friday, September 8, 9 p.m. to 5 a.m. General Lane Closures & Traffic Pacings:
  • One left lane on I-285 eastbound from SR 400 to Peachtree Dunwoody Road
  • Two left lanes on I-285 eastbound from Riverside Drive to Roswell Road
  • Two left lanes on I-285 westbound from Roswell Road to Lake Forrest Drive
  • One right lane on SR 400 northbound at Northland Drive
  • Two left lanes on SR 400 northbound CD lanes from Hammond Drive to Abernathy Road
  • One lane on Abernathy Road to Glenlake Parkway northbound
  • One right lane on Abernathy Road westbound from Peachtree Dunwoody Road to SR 400
  • One right lane on Peachtree Dunwoody Road southbound at I-285
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 northbound (Detour Map)
  • Motorists traveling on I-285 westbound to SR 400 northbound should use Exit 25 Roswell Road and I-285 eastbound to access SR 400 northbound (Exit 27).
** 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.
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.
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.
I-285 eastbound to Roswell Road (Detour Map)
  • Motorists traveling on I-285 Roswell Road should use Exit 26 Glenridge Drive and Glenridge Drive to access Roswell Road.
  • Alternate Route: Motorists traveling on I-285 eastbound to Roswell Road should use Exit 26 Glenridge Drive and Hammond Drive to access 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.
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.
Saturday, September 9, 9 p.m. to 9 a.m. General Lane Closures & Traffic Pacings:
  • One right lane on SR 400 southbound from Hammond Drive to I-285
Closures and Detours: 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.
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.

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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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