The Mitchell Department of Public Safety said a 57-year-old Mitchell man was found dead Friday at the Sanborn Boulevard viaduct.
Authorities said a report at 8:55 a.m. indicated that a man was on the railroad tracks below the viaduct. Officers responded to the scene and found the man deceased.
"At this point in time, there is no indication of foul play involving the death," Det. Lt. Don Everson said in a statement.
Everson said authorities believe the man was a resident of Mitchell. An autopsy is pending, and authorities did not release the man's name, pending the notification of family members.