A bridge over a lake in Arizona partially collapsed Wednesday after a freight train derailed.
“Several roads are restricted near Tempe Town Lake and west of downtown Tempe,” the department wrote. “Please avoid the area.”
Photos posted by the department showed billowing smoke and fire on the bridge.
The fire department told local news outlets that some train cars were carrying lumber.
Aircraft are also being directed away from the fire, said the Federal Aviation Administration (FAA).
“We are directing aircraft north or south of the incident scene to minimize aircraft-noise distraction to fire crews,” an FAA spokesman told the outlet.
A Union Pacific spokesperson told the outlet that eight to 10 rail cars caught fire. Three tank cars fell onto an empty park below.
Two of the tank cars contained cyclohexanone and the third contained a type of rubber material, officials said.