Train Derailment


The derailment caused no injuries, according to Jeff DeGraff, Arizona Director of Media Relations at Union Pacific. Two crew members were on board, however they were at the front of the train whereas the derailment occurred at the middle.

The cause of the derailment is still under investigation, although flooding and heavy rainfall likely played a role. Union Pacific will release an official announcement once a full examination of the tracks can be completed.

The derailment obstructed two sets of tracks. The first set of tracks is cleared and already has some trains passing through, in an attempt to prevent any further delays. Workers are still clearing equipment and containers from the second pair of tracks.

Although hazardous materials crews were dispatched, no hazardous materials were found on scene, according to the Northwest Fire District.

Union Pacific has no firm time of completion, and plan on continuing to work through the day.


As of Wednesday, July 11 at 7:20 a.m., all roads in town are now open, with the exception of the east side I-10 frontage road between Twin Peaks Road and Avra Valley, which remains closed due to flooding and train derailment. 24-hour security is on site.


According to NWFD Public Information Officer, Capt. Brian Keeley, roughly 20 rails cars have fallen off the track.

“Crews are currently searching the area,” Keeley said in a video posted on Twitter. “There were no immediate reports of hazardous materials.”

Keeley said that hazardous materials crews are still on scene to verify to scene.

Original Story:

According to Northwest Fire District, crews are actively responding to “multiple swift water rescue calls all over the district,” as well as a train derailment along Interstate 10 near Twin Peaks and Avra Valley Roads.

Additionally, the Town of Marana has advised drivers against using the following roadways due to water level:

  • Casa Grande Highway at Barnett Road to Tangerine Farms Road
  • Coachline Blvd at Windmill park
  • Avra Valley at Casa Grande Highway west of freeway flooding
  • Twin Peaks Road west and east of Saguaro Bloom community.
  • Linda Vista at Hartman Lane west to Tucson Premium Outlet Mall
  • Sandario Road north and south to Avra Valley.
  • Avoid frontage roads near Twin Peaks Road, Avra Valley Road, and Marana Road

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