Twenty-five were reported in the last four years, with five involving semi trucks and 67 percent caused by unsafe speeds, according to ODOT.
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Excessive speed was a factor in Monday’s crash, according to troopers.
While there were nine crashes reported on the overpass in 2015, the amount has continued to decrease each year.
Seven crashes were reported in 2016, five in 2017 and 4 in 2018, according to ODOT.
Multiple people called 911 dispatchers regarding Monday’s accident, with at least two callers mentioning the pigs.
“[The truck] was hauling pigs,” a man told a dispatcher.
“Pigs? Like an oink?” the dispatcher asked.
“Yes, oink oink pigs,” the caller said. “Yes, we’ve got pigs running around the highway.”
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Another semi truck picked up the pigs about two hours after the crash.
DAS Transit has been involved in two injury crashes within the past two years, according to the Federal Motor Carrier Safety Administration.
“We were saddened to hear about the pigs who were injured and killed ... Pigs and other farm animals endure intolerable cruelty every day in factory farms, slaughterhouses and in transit,” said Farm Sanctuary president and co-founder Gene Baur.