The accident occurred south of Eastern Avenue about 3:19 p.m., and only involved the tractor trailer, Sparks said. There were no reported injuries.
Southbound traffic on the highway was being pushed to the far right of the highway, initially squeezing by on a shoulder, the MdTA said. Drivers were advised to take Interstates 895 and 695 as alternates.
Sparks said she did not have a cause for the accident.