A rollover crash on Highway 101 northbound near San Marcos Rd. in Paso Robles is backing up traffic.
California Highway Patrol said a semi-truck flipped on its side Thursday around 4:33 a.m.
CHP said traffic is slow but moving because cars are moving around the truck.
CHP said it does not know when the area will be clear.
CHP is reporting no injuries associated with the crash.
Truck rolled over on NB Hwy 101 in the construction area by San Marcos Rd at 0430, no injuries. We worked with CHP, Johnboys towing, CalTrans, Camp Roberts Fire and San Luis Fire Rescue 30. Drive safe and be careful out there. #SMF86 #firstresponders #firefighter #hwy101 #chp #johnboystowing #camprobertsfiredepartment #caltrans #pasorobles #sanluisobispo