OKLAHOMA CITY -- Traffic is flowing smoothly again after all northbound lanes on I-35 were closed near S.E. 44th St. following an accident.
Authorities said an RV camper-type vehicle lost control and flipped over.
Officials said the driver fell asleep at the wheel.
The driver and a family friend on board were not injured.
The driver's wife was taken to the hospital but is expected to be okay.