A semi-truck crashed into a building in northern Adair County early this morning, injuring the truck driver and resulting in the shutdown of a manufacturing plant. John Worth, vice president of Schafer Systems in Adair, says at about 3:45 a.m., a semi traveling westbound on I-80 veered off the interstate at the Adair exit and missed the stop sign at the interchange. The truck crashed into the east side of the company’s manufacturing facility. Worth said the driver was injured. The Iowa State Patrol reports an air ambulance was called in to rush the unidentified man to University Hospital in Omaha. The plant manufactures plastic products for the lottery industry. Worth says their production lines were shut-down for the night, and are closed today as well because of the extensive damage caused by the big rig. He says the truck fully entered the east side of plant, so there was considerable structural damage to that side of the facility, but they haven‘t come up with an estimate on the damage just yet. There was no one in the building at the time of the crash.