Fatal helicopter crash on Mississippi River kills two Ameren contractors

Two people died Thursday morning in a helicopter crash on the Mississippi River.

The crash happened around 11 a.m. Thursday on the Missouri side of the river near Alton. The helicopter struck power lines, fell onto a barge below and caught fire, according to Missouri State Highway Patrol Cpl. Dallas Thompson, who spoke to reporters at the scene.

It was a Hughes 369D, which is a type of light utility helicopter, according to the National Transportation Safety Board. NTSB confirmed that it is investigating the crash in a Thursday afternoon statement.

St. Louis media reported that the helicopter was being used to transport crews performing work on the power lines. They were contractors for Ameren who were repairing and replacing tower lighting and marker balls, which make the wires visible to aircraft pilots.

The names of the victims have not been released.

“We are saddened about today’s tragic incident,” Ameren said in a written statement to KSDK. “Our thoughts and heartfelt condolences are with the victims’ families and colleagues. We will cooperate with the investigation.”

This story was originally published August 7, 2025 at 3:29 PM.