The accident occurred around 5 a.m. Tuesday about three miles east of Kearney. The truck had gone off the roadway and flipped onto its side.
The accident ripped off a portion of the roof and freed some cattle. They were rounded up later.
The truck driver was identified as 73-year-old Donald Brush, of McCook. He was taken to Good Samaritan Hospital in Kearney and was listed in serious condition.