Dead and wandering chickens closed all of westbound Interstate 30 just before First Avenue on Tuesday afternoon.
A tractor-trailer hauling chickens and crates overturned about noon, Dallas police Senior Cpl. Jamie Matthews said. Some chickens died from the wreck, while others wandered about.
Cpl. Matthews estimated about 2 p.m. that the mess could be cleaned up before the late-afternoon rush hour.
The driver of the tractor-trailer was not seriously injured. No other vehicles were involved, and investigators were trying to determine how the truck overturned.
Police did not know why the chickens crossed the interstate.
