Basic Facts
Crash date: February 27, 2026
Crash location: near State Highway 119 and Niwot Road in Boulder County, CO
People involved:
- Thaddeus Fial, 75
- Unidentified truck driver, 61
Do authorities suspect alcohol played a role in this crash? Unknown
Did authorities recommend criminal charges? Unknown
Do authorities suspect a product defect caused the crash? Unknown
Accident Report
Niwot, CO — February 27, 2026, Thaddeus Fial was killed in a dump truck accident just after 11 a.m. on State Highway 119/Diagonal Highway.
Authorities said a dump truck and a bicycle collided near the intersection with Niwot Road, as the dump truck was trying to turn right onto the highway.
The bicyclist, 75-year–old Lafayette resident Thaddeus Fial, was pronounced dead at the scene of the crash, according to authorities.
No other injuries were reported.
Authorities have not released any additional information about the Boulder County crash at this time.
How Did This Accident Occur?
Nothing good can happen when a bicycle and a dump truck come together. We don’t know why it happened in this instance, as initial details are limited.
It is unclear if the bicyclist was on the highway or trying to cross it at the time of the crash. That matters because professional drivers are expected to be aware of their surroundings to prevent accidents like this.
An in-depth investigation, by the police or an independent third party, should provide some answers for those affected by this crash.
What do you think happened?

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