At least a dozen cars were damaged, sustaining cracked windshields and dented hoods. The rock throwers terrorized drivers Wednesday at 9:30 p.m. from a train track overpass.
One of the victims said he thought gunfire was to blame. Victor Marin thought bullets were hitting his SUV when he was driving his wife to work Wednesday night.
"Of course I was scared. I thought it was something else," he said.
State police took reports from people at a nearby gas station.
"Now when I cross a bridge I'm gonna watch all the time," Marin said.
This is the sixth time rock vandals have struck in a week. On May 9, police shut down the Chicago Skyway as they investigated vehicle damage from rocks there. Seven cars were damaged and two teens were charged with felony vehicular endangerment and a misdemeanor criminal damage to property charge.
No one has been injured in these incidents.
There's also been other incidents on I-57 near 151st Street, on the Eisenhower near Pulaski and yet another incident on the Stevenson by Pulaski.
Marin says he hopes authorizes put up more fencing at trouble spots. Even though pranksters may be to blame he says they need to understand that their actions can kill.