COLUMBUS, Ohio — Randy Budd, the husband of an Ohio schoolteacher critically injured when a rock was dropped on her car from a highway overpass, has died. He was 55.

Budd died of a self-inflicted gunshot wound and was pronounced dead at his Uniontown, Ohio, home late Saturday, Harry Campbell, chief investigator for Ohio’s Stark County Coroner’s Office, said Sunday.

Sharon Budd suffered catastrophic head injuries when a five-pound rock dropped from an overpass crashed through the windshield of her family’s moving car on Interstate 80 in central Pennsylvania in July 2014.

Randy Budd said in January that his wife had seven major surgeries and lost part of her brain and one of her eyes. Because part of her brain was affected, he said, she would require constant care at home for the rest of her life.

Four young men were convicted and sentenced to prison in a case that attracted national attention.

After his wife’s accident, Randy Budd became an advocate for requiring fencing on overpasses. Earlier this year, the Budd family helped push through new rules in Ohio requiring any new or rehabbed bridges over most busy highways to be topped with chain-link fencing to deter vandals.

“I kept thinking, this had to happen for a reason. Why would this happen?” Randy Budd said in January. “There has got to be something good to come out of this, and it happened. Now it’s going to have an impact in Ohio for years and years to come, and somebody else won’t have to go through what we’re going through – or even death.”

Ohio officials said it means at least 108 bridges or overpasses will get fencing 6 to 8 feet high in the next few years.