POLK COUNTY — A 61-year-old Iowa man died Sunday afternoon, November 8, 2026, when his motorcycle left Interstate 80, traveled approximately 250 feet through a grassy median and struck a cable barrier, according to the Iowa State Patrol.
Frederick C. Olson, 61, of Des Moines, was killed in the single-vehicle crash, which occurred at approximately 4:50 p.m. on westbound Interstate 80 near mile marker 137 in Polk County.
According to the State Patrol’s preliminary crash report, Olson was operating a 2014 Harley-Davidson motorcycle westbound in the left lane of the interstate.
As he navigated a curve, the motorcycle left the roadway onto the left shoulder and continued into the grassy median separating the eastbound and westbound traffic lanes.
The motorcycle traveled approximately 250 feet through the grass before striking a cable barrier along the eastbound side of the interstate.
Emergency medical personnel responded but pronounced Olson dead at the scene. The Polk County Medical Examiner’s Office transported his body to the State Medical Examiner’s Office.
The State Patrol’s preliminary report identifies only Olson’s motorcycle as involved in the fatal crash. No other vehicles or injured motorists were listed.
Investigators did not specify why Olson left the roadway or whether speed, road conditions or other factors contributed to the crash.
The fatal accident follows several other deadly motorcycle crashes on Iowa roads this year.
In October, NorthIowaToday.com reported on a deadly motorcycle crash near Fort Madison in which a turning driver failed to yield, according to the Iowa State Patrol.
In August, Sheldahl Mayor Todd Brandon Anderson, 61, died in a motorcycle crash near Polk City. Anderson was described as an avid motorcyclist.
Earlier in the summer, Marcus Porter, 43, of Waterloo, was killed in a motorcycle crash in which his motorcycle left the roadway and entered a median, according to Waterloo police.
The Polk County Sheriff’s Office, Ankeny Police Department and Saylor Township Fire Department assisted the State Patrol at Sunday’s crash scene.
Iowa State Patrol Trooper Dylan Jones investigated the accident, which is documented under case number 202600245548.
Iowa’s preliminary statewide traffic fatality count stood at 241 as of the Iowa Department of Transportation’s November 5 report. That earlier count does not reflect Sunday’s crash and may be revised as more deaths are reported.
No additional findings about the cause of Olson’s crash were provided in the initial State Patrol report.