The Georgia Department of Transportation has announced the latest round of lane and ramp closures and other traffic changes for Transform 285/400, its massive project to reconstruct the I-285/Ga. 400 interchange.

Schedules may change based on the work and the weather.

Ga. 400 ramp closures

July 27-28 and 30-31: Southbound ramp to I-285 westbound closed, detour on Glenridge Connector, 9 p.m. to 5 a.m.

Ga. 400 lane closures

July 27-28: Southbound between Hammond Drive and Johnson Ferry Rod, one right lane, 8 p.m. to 6 a.m.

Aug. 3-4: Northbound and southbound between Glenridge Connector and Pitts Road, alternating one right lane and one left lane, 8 p.m. to 6 a.m.

I-285 lane closures

July 27-28: Westbound between Chamblee-Dunwoody Road and Ashford-Dunwoody Road, one right lane, 8 p.m. to 6 a.m.

Aug. 3-4: Eastbound and westbound between Lake Forrest Drive underpass and east of Ashford-Dunwoody Road, alternating one right lane and one left lane, 8 p.m. to 6 a.m.

Peachtree-Dunwoody Road lane closures

July 27-28: Northbound and southbound at I-285, one left lane, 9 p.m. to 5 a.m.

Other traffic changes

On July 27, July 31 and Aug. 3, 1:30 to 2 p.m., the following roadways will have traffic pacing — meaning police cars will sometimes force other vehicles to slow or stop — on all lanes: I-285 eastbound between Roswell Road and Perimeter Center Parkway; I-285 westbound between Chamblee-Dunwoody Road and Perimeter Center Parkway; and Perimeter Center Parkway between Lake Hearn Drive and Hammond Drive.

I-285 eastbound and westbound ramps to Ga. 400 will have period traffic pacing — meaning police cars will sometimes force other vehicles to slow or stop — between 7 a.m. and 7 p.m.

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