Traffic on Highway in Marina was blocked this morning for about 2 hours after a roll-over collision involving a big rig. The wreck happened just before 6 a.m. when the tractor trailer rolled over the highway across both north and south bound lanes. C-H-P re-routed traffic to Reservation Road. The driver of the semi, 41-year old Glen Haynes and passenger 53-year old Juan Arjona, were hospitalized with moderate injuries. Investigations into what caused the crash continue. All lanes were reopened as of 8 a.m.