High winds on Interstate 80 in Tooele County caused four semi-rigs to topple on Monday morning, according to the Utah Department of Transportation. Wind also may be responsible for power outages nearly 6,000 homes and businesses in Salt Lake County â including at the Salt Lake County Government Center. The semi accidents occurred at mileposts 82 (westbound lanes), 79 (westbound lanes), 77 (westbound lanes) and 72 (eastbound lanes), according to the UDOT.