A tractor trailer carrying 6,000 gallons of olive oil overturned while exiting Interstate 275 just before noon Tuesday, dumping much of its contents all over the roadway. The Florida Highway Patrol says the semi was driving north on I-275 when it tried to exit onto US Highway 92 (Hillsborough Avenue). Investigators say the truck was going too fast, and turned over onto its side. Several hundred gallons of olive oil spilled onto the exit ramp, shutting it down to traffic for several hours. The ramp reopened about 6:45 p.m.