HOUSTON, Texas (KTRK) -- An overturned 18-wheeler shut down the southbound entrance ramp on the West Loop near I-10 on Saturday morning, Houston TranStar reports.

According to Houston TranStar, the incident was reported at about 5 a.m. and closed the entire ramp, located near North Post Oak Boulevard.

Officials have not said whether anyone was injured in the incident or what caused the big rig to flip over.