A dump truck overturned Wednesday afternoon in Geary County, according to the Kansas Highway Patrol. The truck, which was pulling a trailer, was northbound on U.S. Highway 77 two miles west of Junction City. As it was approaching K-57, it lost air pressure going down a hill, which resulted in failed breaking. The truck’s driver then merged into the right turn lane to avoid making a left turn. The driver could not negotiate the turn on to K-57 due to speed and overturned.