Arizona Train Derailment Sparks Massive Fire

Fire crews spent hours battling the blaze at Tempe's Town Lake Bridge Wednesday after a partial train derailment and bridge collapse. KPNX's Mitch Carr reports.

TEMPE, Ariz. (KPNX/NBC News) — Investigators are working to determine the cause of a train derailment and massive fire that destroyed part of Tempe, Arizona’s Town Lake Bridge Wednesday.

The train derailed shortly after 6 a.m., sparking a massive blaze.

One person was treated on scene for smoke inhalation, but no one in the train crew was injured, according to Union Pacific.

The train was hauling 95 cars and eight to 10 train of them were involved. The cars consisted of a mix of freight and tank cars.

Three tank cars were on the ground under the bridge with two of them containing cyclohexanone, a flammable liquid, and one contained a rubber material.

Union Pacific spokesman Tim McMahan said the south side of the bridge collapsed and rail cars fell into an empty park below.

Read more here.