Public safety officers spent the morning attempting to corral roughly 100 pigs that escaped after their carrier tipped over at the interchange between Highway 30 and northbound Interstate 380.

The Iowa Department of Transportation said a semi overturned on the ramp for Exit 16B, which takes traffic from I-380 North onto Highway 30 West, around 9:30 a.m. Wednesday.

KCRG-TV9 photojournalist Leah Schwartz at the scene said it appeared the semi rolled over onto the driver's side, though the driver was not injured.

Officials estimated 180 hogs were on board at the time the semi overturned, about half of which escaped and began walking along the slopes of the Highway 30 ramp and along the Kirkwood Boulevard exit.

Kirkwood Community College employees arrived with a trailer to house the escaped hogs and contain those still inside the trailer. Authorities said they could be on the scene for several hours because they couldn't flip the trailer until all hogs had been removed.

Members of the Iowa State Patrol, Cedar Rapids Police Department and Iowa Department of Transportation also responded to help corral the escaped pigs.