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.

This round of work includes significant ramp closures and detours in the interchange, with traffic detouring onto the Glenridge Connector in Sandy Springs.

The main lane and ramp closures will happen in night and early-morning hours. Schedules may change based on the work and the weather.

Ga. 400 lane closures

Aug. 18-19: Northbound and southbound between the Glenridge Connector and Pitts Road. One right lane and one left lane closed. Hours: 8 p.m. to 6 a.m.

I-285 lane closures

Aug. 18-19: Eastbound and westbound between Lake Forrest Drive overpass and east of Ashford-Dunwoody Road. One right lane and one left lane closed. Hours: 8 p.m. to 6 a.m.

Ga. 400 ramp closures

Aug. 21-23: Southbound entrance ramp to I-285 westbound will be closed. Traffic will be detoured onto the Glenridge Connector and back onto Ga. 400 northbound to access I-285. Hours: 9 p.m. to 5 a.m.

Aug. 24-25: Southbound entrance ramp to I-285 eastbound will be closed. Traffic will be detoured onto the Glenridge Connector and back onto Ga. 400 northbound to access I-285. Hours: 9 p.m. to 5 a.m.

Other traffic changes

Ga. 400 flex lanes — where the shoulder of the road is used as an extra travel lane during commuting hours — will be closed intermittently daily between Pitts Road and the North Springs MARTA Station ramp. That is for tree-clearing and utility relocation work. Hours: 7 a.m. to 7 p.m.

John Ruch

John Ruch is an Atlanta-based journalist. Previously, he was Managing Editor of Reporter Newspapers.