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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 7, through August 14, 2023 Daytime Closures: Monday, August 7, through Friday, August 11, 7 a.m. to 5 p.m. General Lane Closures & Traffic Pacings:
  • Encroachment on SR 400 southbound off-ramp to North Springs MARTA Station
  • Shoulder closure on I-285 eastbound from Ashford Dunwoody Road to Chamblee Dunwoody Road
  • Shoulder closure on SR 400 northbound CD lanes from North Springs MARTA Station to Spalding Drive
  • Shoulder closure on I-285 westbound from I-285 to Glenridge Drive
Continuous Weekend Closures: (Friday, Aug 11, 9 p.m. to Sunday, August 13, 5 a.m.) General Lane Closures & Traffic Pacings:
  • (No Closures)
Closures and Detours: 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.
Overnight Closures:  Monday, August 7, 9 p.m. to 5 a.m. General Lane Closures & Traffic Pacings:
  • One left lane on I-285 eastbound at Lake Forrest Drive
  • Two left lanes on I-285 eastbound CD lanes from Roswell Road to SR 400
  • Two left lanes on I-285 eastbound from SR 400 to Peachtree Dunwoody Road
  • One right lane on I-285 westbound from Peachtree Dunwoody Road to SR400
  • One left lane on I-285 westbound at Lake Forrest 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 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 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.
I-285 westbound to Peachtree Dunwoody Road (Detour Map)
  • Motorists traveling on I-285 westbound to Peachtree Dunwoody Road should use Exit 27A SR 400 northbound and Exit 5 Abernathy Road to access Peachtree Dunwoody Road.
I-285 westbound 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.
I-285 eastbound to Glenridge Drive (Detour Map)
  • Motorists traveling on I-285 eastbound to Glenridge Drive should use Exit 25 Roswell Road to access Glenridge Drive.
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.
** 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.
** 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 8, 9 p.m. to 5 a.m. General Lane Closures & Traffic Pacings:
  • One left lane on I-285 eastbound at Lake Forrest Drive
  • Two right lanes on I-285 eastbound CD lanes from Roswell Road to SR 400
  • Two left lanes on I-285 eastbound from SR 400 to Peachtree Dunwoody Road
  • One right lane on I-285 westbound from Peachtree Dunwoody Road to SR400
  • One left lane on I-285 westbound at Lake Forrest Drive
  • One left lane on SR400 northbound from I-285 to Hammond Drive
  • One right lane on Barfield Road southbound to Abernathy Road eastbound at Mercedes-Benz Way
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 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 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.
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 westbound to Peachtree Dunwoody Road (Detour Map)
  • Motorists traveling on I-285 westbound to Peachtree Dunwoody Road should use Exit 27A SR 400 northbound and Exit 5 Abernathy Road to access Peachtree Dunwoody Road.
I-285 westbound 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.
I-285 eastbound to Glenridge Drive (Detour Map)
  • Motorists traveling on I-285 eastbound to Glenridge Drive should use Exit 25 Roswell Road to access Glenridge Drive.
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.
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.
** 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.
** 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, August 9, 9 p.m. to 5 a.m. General Lane Closures & Traffic Pacings:
  • One left lane on I-285 eastbound at Lake Forrest Drive
  • Two right lanes on I-285 eastbound CD lanes from Roswell Road to SR 400
  • Two left lanes on I-285 eastbound from SR 400 to Peachtree Dunwoody Road
  • One right lane on I-285 westbound from Peachtree Dunwoody Road to SR400
  • One left lane on I-285 westbound at Lake Forrest Drive
  • One right lane on SR 400 northbound at Northland Drive
  • One right lane on Abernathy Road at Glenlake Road
  • Two right lanes on Abernathy Road westbound at Mercedes-Benz Way and Glenlake Road
  • One right lane on Barfield Road southbound to Abernathy Road eastbound at Mercedes-Benz Way
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 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.
I-285 westbound to Peachtree Dunwoody Road (Detour Map)
  • Motorists traveling on I-285 westbound to Peachtree Dunwoody Road should use Exit 27A SR 400 northbound and Exit 5 Abernathy Road to access Peachtree Dunwoody Road.
I-285 westbound 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.
I-285 eastbound to Glenridge Drive (Detour Map)
  • Motorists traveling on I-285 eastbound to Glenridge Drive should use Exit 25 Roswell Road 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).
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.
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.
Thursday, August 10, 9 p.m. to 5 a.m. General Lane Closures & Traffic Pacings:
  • One left lane on I-285 eastbound at Lake Forrest Drive
  • Two left lanes on I-285 eastbound CD lanes from Roswell Road to SR 400
  • Two left lanes on I-285 eastbound from SR 400 to Peachtree Dunwoody Road
  • **One right lane on I-285 westbound from Peachtree Dunwoody Road to SR400
  • One left lane on I-285 westbound at Lake Forrest Drive
  • **Two right lanes on I-285 westbound from Chamblee Dunwoody Road to Ashford Dunwoody Road
  • One right lane on SR 400 northbound at Northland Drive
  • One right lane on Abernathy Road at Glenlake Road
  • Two right lanes on Abernathy Road westbound at Mercedes-Benz Way and Glenlake Road
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 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 Peachtree Dunwoody Road (Detour Map)
  • Motorists traveling on I-285 westbound to Peachtree Dunwoody Road should use Exit 27A SR 400 northbound and Exit 5 Abernathy Road to access Peachtree Dunwoody Road.
I-285 westbound 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.
I-285 eastbound to Glenridge Drive (Detour Map)
  • Motorists traveling on I-285 eastbound to Glenridge Drive should use Exit 25 Roswell Road to access Glenridge Drive.
Chamblee Dunwoody Road to I-285 westbound (Detour Map)
  • Motorists traveling north on Chamblee Dunwoody Road to I-285 westbound should use Mount Vernon Highway and Ashford Dunwoody Road to access I-285 westbound.
  • Motorists traveling south on Chamblee Dunwoody Road to I-285 westbound should use Harts Mill Road and Ashford 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.
Friday, August 11, 9 p.m. to 5 a.m. General Lane Closures & Traffic Pacings:
  • One left lane on I-285 eastbound at Lake Forrest Drive
  • Two right lanes on I-285 eastbound CD lanes from Roswell Road to SR 400
  • Two left lanes on I-285 eastbound from SR 400 to Peachtree Dunwoody Road
  • ** One right lane on I-285 westbound from Peachtree Dunwoody Road to SR400
  • Two left lane on I-285 westbound from Roswell Road to Lake Forrest Drive
  • ** Two right lanes on I-285 westbound from Chamblee Dunwoody Road to Ashford Dunwoody Road
  • One right lane on SR 400 northbound at Northland Drive
  • One right lane on Abernathy Road at Glenlake Road
  • Two right lanes on Abernathy Road westbound at Mercedes-Benz Way and Glenlake Road
  • One right lane on Barfield Road southbound to Abernathy Road eastbound at Mercedes-Benz Way
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.
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 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.
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 Peachtree Dunwoody Road (Detour Map)
  • Motorists traveling on I-285 westbound to Peachtree Dunwoody Road should use Exit 27A SR 400 northbound and Exit 5 Abernathy Road to access Peachtree Dunwoody Road.
I-285 eastbound to Glenridge Drive (Detour Map)
  • Motorists traveling on I-285 eastbound to Glenridge Drive should use Exit 25 Roswell Road to access Glenridge Drive.
Chamblee Dunwoody Road to I-285 westbound (Detour Map)
  • Motorists traveling north on Chamblee Dunwoody Road to I-285 westbound should use Mount Vernon Highway and Ashford Dunwoody Road to access I-285 westbound.
  • Motorists traveling south on Chamblee Dunwoody Road to I-285 westbound should use Harts Mill Road and Ashford 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.
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, August 12, 9 p.m. to 9 a.m. General Lane Closures & Traffic Pacings:
  • Three right lanes on I-285 westbound from Ashford Dunwoody Road to Roswell Road
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 westbound 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.
Sunday, August 13, 9 p.m. to 9 a.m. General Lane Closures & Traffic Pacings:
  • (No Closures)
Closures and Detours:
  • (No Closures)

Click here for more information.

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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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