RIVERDALE — Police say at least one person is dead after a crash Monday afternoon on Interstate 15.

The Utah Highway Patrol indicated in a tweet that at least one person was dead following a crash involving two semitractor-trailers.

The crash occurred near mile marker 339 in the northbound lanes of I-15. Online dispatch records show Riverdale Fire Department units being sent to the area of the crash at 2:58 p.m.

Around 5:30 p.m., UHP indicated in a tweet that one tractor-trailer was parked on the right shoulder of I-15, when the driver of the rig was standing at the rear of the trailer readjusting his load. A second tractor-trailer swerved to avoid a crash, and the vehicle hit the driver and the rear of the tractor-trailer.

It was not immediately clear how many vehicles were involved or if others were injured in the crash.

The crash has caused serious backups in the northbound lanes of I-15. As of 3:30 p.m., only one lane, the right lane, was closed due to the crash.

Jacob Scholl is the Cops and Courts Reporter for the Standard-Examiner. Email him at jscholl@standard.net and follow him on Twitter at @Jacob_Scholl.

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