7:30 p.m. update:
From Cartersville Police: “75 Northbound shut down due to accident before 288. Expect delays.”
The DOT map shows traffic moving at 21 mph as of 6:25 p.m. (northbound).
Best detour: U.S. 41 to the west of I-75.
Georgia DOT highway map. Mostly the interstate, metro Atlanta.
Google Traffic map: Set on surface streets, interstates in Northwest Georgia and Northeast Alabama.