OSAGE COUNTY – A major accident has occurred on I-35 at the 167 mile marker just inside Osage County around 8:50 this morning. According to a report, a large vehicle towing a trailer went off of a bridge and into a ravine. Eighteen people were in the vehicle and as of last report six were unaccounted for. The highway is down to one lane, but vehicles still may pass. Keep listening to KOFO and following us on Facebook and we’ll provide more information as it becomes available.