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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 July 3, through July 10, 2023 Continuous Weekend Closures: (Friday, July 7, 9 p.m. to Monday, July 10, 5 a.m.) General Lane Closures & Traffic Pacings:
  • One left lane on SR 400 northbound at Spalding Drive
Closures and Detours: 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.
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.
Overnight Closures:  Wednesday, July 5, 9 p.m. to 5 a.m. General Lane Closures & Traffic Pacings:
  • One right lane on I-285 eastbound from SR 400 to Peachtree Dunwoody Road
  • Two left lanes on I-285 eastbound CD lanes from Roswell Road to SR 400
  • One right lane on I-285 westbound from Peachtree Dunwoody Road to Glenridge Drive
  • One left lane on SR 400 northbound CD lanes from Hammond Drive to Abernathy Road
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.
Abernathy Road to SR 400 southbound (Detour Map)
  • Motorists traveling on Abernathy Road to SR 400 southbound should use SR 400 northbound and Exit 6 Northridge Drive to access SR 400 southbound.
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.
Mount Vernon Highway Full Closure (Detour Map)
  • Motorists traveling eastbound on Mount Vernon Highway should use Barfield Drive (road changes to Mercedes-Benz Drive) and Abernathy Road to access Mount Vernon Highway.
  • Motorists traveling westbound on Mount Vernon Highway should use Peachtree Dunwoody Road, Abernathy Road, and Mercedes-Benz Drive (road changes to Barfield Drive) to access Mount Vernon Highway.
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, July 6, 9 p.m. to 5 a.m. General Lane Closures & Traffic Pacings:
  • One right lane on I-285 eastbound from SR 400 to Peachtree Dunwoody Road
  • **Two right lanes on I-285 eastbound CD lanes from Roswell Road to SR 400
  • **Two left lanes on I-285 eastbound CD lanes from Roswell Road to SR 400
  • One left lane on I-285 eastbound from Ashford Dunwoody Road to Chamblee Dunwoody Road
  • One left lane on I-285 eastbound CD lanes from Roswell Road to Glenridge Drive
  • One right lane on I-285 eastbound at Roswell Road
  • One right lane on I-285 westbound from Peachtree Dunwoody Road to Glenridge Drive
  • Four left lanes on I-285 westbound from Chamblee Dunwoody Road to Ashford Dunwoody Road
  • One left lane on I-285 westbound CD lanes from Ashford Dunwoody Road to Perimeter Center Parkway
  • One left lane on SR 400 northbound CD lanes from Hammond Drive to Abernathy Road
  • One right lane on SR 400 northbound from Northland Drive to Glenridge Connector
  • Two left lanes on SR 400 northbound CD lanes from Mount Vernon Highway to Abernathy Road
  • One right lane on SR 400 southbound from Spalding Drive to North Springs MARTA Station
  • One right lane on Barfield Road southbound from Abernathy Road to Mercedes-Benz Way
  • One right lane on Abernathy Road eastbound from Aria Boulevard to Mercedes-Benz Drive
Closures and Detours: Abernathy Road to SR 400 southbound (Detour Map)
  • Motorists traveling on Abernathy Road to SR 400 southbound should use SR 400 northbound and Exit 6 Northridge Drive to access SR 400 southbound.
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 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 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.
Mount Vernon Highway Full Closure (Detour Map)
  • Motorists traveling eastbound on Mount Vernon Highway should use Barfield Drive (road changes to Mercedes-Benz Drive) and Abernathy Road to access Mount Vernon Highway.
  • Motorists traveling westbound on Mount Vernon Highway should use Peachtree Dunwoody Road, Abernathy Road, and Mercedes-Benz Drive (road changes to Barfield Drive) to access Mount Vernon Highway.
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, July 7, 9 p.m. to 5 a.m. General Lane Closures & Traffic Pacings:
  • One right lane on I-285 eastbound from SR 400 to Perimeter Center Parkway
  • One left lane on I-285 eastbound from Ashford Dunwoody Road to Chamblee Dunwoody Road
  • One left lane on I-285 eastbound CD lanes from Roswell Road to Glenridge Drive
  • One right lane on I-285 westbound from Peachtree Dunwoody Road to Glenridge Drive
  • One left lane on I-285 westbound CD lanes from Ashford Dunwoody Road to Perimeter Center Parkway
  • Two left lanes on I-285 westbound from Chamblee Dunwoody Road to Ashford Dunwoody Road
  • One left lane on SR 400 northbound CD lanes from Hammond Drive to Abernathy Road
  • One right lane on SR 400 northbound from Northland Drive to Glenridge Connector
  • Two left lanes on SR 400 northbound CD lanes from Mount Vernon Highway to Abernathy Road
  • One right lane on SR 400 southbound from Spalding Drive to North Springs MARTA Station
  • One right lane on SR 400 southbound from Hammond Drive to Abernathy Road
Closures and Detours: 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.
Saturday, July 8, 9 p.m. to 9 a.m. 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.
Sunday, July 9, 9 p.m. to 9 a.m. 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.
  Click here for more information. For email updates on this project here: https://dot.us20.list-manage.com/subscribe?u=85e8270674fc9a47b18bf99be&id=92621e6905 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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