State highway officials advise of possible delays, reduced speeds and detours in some locations as continued interchange construction requires nightly lane closures on I-285 and Ga. 400 in the Perimeter area of North Fulton and DeKalb counties.

The closures are scheduled for 9 p.m. to 5 a.m., according to the Georgia Department of Transportation:

Thursday, overnight: Four left lanes of westbound I-285 from Peachtree Dunwoody Road to Ga. 400; two right lanes of westbound I-285 from Ga. 400 to Roswell Road; and the ramp from northbound Ga. 400 to westbound I-285.

Thursday-Saturday: One left lane of northbound Ga. 400 from Johnson Ferry Road to Hammond Drive; and the ramp from eastbound I-285 to northbound Ga. 400.

Friday-Monday (continuous): Two left lanes of southbound Ga. 400 from Hammond to I-285.

All work is "weather permitting" and subject to change. Information: https://bit.ly/2KfpGqs