Legal Guide: Your Rights After the June 4, 2025 I-25 Semi-Truck Crash in Thornton, Colorado
By Mandelaris Law, LLC – Personal Injury Attorneys in Denver, CO
On the morning of June 4, 2025, a major crash involving a semi-truck and four vehicles shut down southbound I-25 near 104th Avenue in Thornton, Colorado. Emergency crews transported multiple people to the hospital, and traffic was diverted for hours.
👉 Read the report on Denver7
If you or someone you love was injured in this crash, here’s what you need to know.
How Federal Law Regulates Trucking Companies
The Federal Motor Carrier Safety Regulations (FMCSRs), managed by the Federal Motor Carrier Safety Administration (FMCSA), establish safety standards for commercial trucks. Violations often contribute to crashes.
- Hours of Service (HOS): Limits daily/weekly driving time to reduce fatigue.
- Driver Qualifications: CDL licensing, health screenings, and background checks.
- Maintenance Rules: Required inspection and repair logs for all commercial vehicles.
- Drug & Alcohol Testing: Mandatory for pre-employment and after accidents.
When these rules are broken, the trucking company may be held liable.
What Claims Can Be Filed Against the Trucking Company?
At Mandelaris Law, LLC, we investigate whether any of the following contributed to your crash:
- Negligent driving (e.g., distracted or impaired driving)
- Hours of Service violations (driver fatigue)
- Negligent hiring or training
- Improper vehicle maintenance
- Overloaded or unsecured cargo
If any of these apply, you may be entitled to compensation.
Compensation You May Be Entitled To
Victims of truck crashes can typically recover for:
- Medical bills (past and future)
- Lost income and loss of future earning capacity
- Pain and suffering
- Emotional trauma
- Property damage
- Permanent disability or wrongful death (in fatal cases)
See our full guide to personal injury compensation →
FAQ: Truck Accident Claims in Colorado
Multiple parties may be liable: the driver, trucking company, maintenance crew, or manufacturers (if faulty parts caused the crash).
No. Speak with an attorney first. Insurance adjusters aim to minimize payouts and may use your words against you.
In most cases, 3 years from the date of the accident, but don’t delay — evidence disappears quickly.
If the driver was on duty, their employer may be vicariously liable, meaning the company shares legal responsibility.
We handle the investigation, collect black box data, secure medical experts, negotiate with insurers, and fight for your full compensation in or out of court.
What To Do Next
If you or someone you care about was involved in the June 4, 2025 I-25 truck accident, take action:
📞 Call Mandelaris Law, LLC today for a free, no-obligation case evaluation.
We proudly represent accident victims throughout Denver and Thornton in truck-related injury claims.
About the Author
Written by Steven Mandelaris, Founding Attorney at Mandelaris Law, LLC.
With over 19 years of experience in Colorado personal injury law, Steven Mandelaris has successfully handled hundreds of truck accident and wrongful death claims. We fight to hold negligent trucking companies accountable — and win you the compensation you deserve.