GIBBON, Neb. (AP) – Officials say a crash on an interstate in south-central Nebraska has injured more than 30 people on a Denver-bound bus. Communications supervisor Craig Schoneberg of the Nebraska State Patrol office says the bus rammed into an overturned semitrailer that was blocking westbound lanes of Interstate 80. He says the accident occurred around 2 a.m. Thursday, two miles east of the Gibbon exit. Schoneberg says another semitrailer clipped the overturned trailer and ended up in a ditch. The bus ran into the median. He says no fatalities were reported. Dan Ronan of the American Bus Association, speaking for the bus company, Burlington Trailways, says 33 people on the bus were hurt. He says two of them, including the driver, were critically injured.