A semi-truck overturned on the westbound 10 Freeway in Fontana on Monday, March 17, 2026, spilling hundreds of gallons of syrup across all lanes and shutting down the freeway for nearly nine hours. The California Highway Patrol reported the truck accident near the Citrus Avenue on-ramp at approximately 11:20 a.m., triggering a SigAlert and creating traffic backups stretching more than five miles east toward Colton in San Bernardino County.
If you or a loved one was involved in this accident or suffered injuries due to the resulting traffic conditions, contact DC Law Group at (310) 571-8860 for a free consultation.
Truck Accident Details on the 10 Freeway Near Citrus Avenue
According to the CHP incident log, the semi-truck overturned in the westbound lanes of the 10 Freeway at the Citrus Avenue on-ramp. The cause of the overturn remains under investigation. Upon overturning, the truck’s trailer released its cargo of syrup, which quickly spread across the freeway, creating a hazardous layer approximately one inch thick covering all westbound lanes.
The CHP issued a SigAlert to close all four westbound lanes as emergency crews responded to the scene. All traffic was diverted off the freeway at the Citrus Avenue exit. ABC7’s AIR7 helicopter captured aerial footage showing a massive backup extending more than five miles to the east, all the way to Colton.
Caltrans crews worked throughout the day to clean up the spill. Initial attempts to use absorbent materials proved ineffective against the thick liquid. Crews eventually brought in a water truck to hose down the roadway and vacuumed up the remaining residue. Despite the extensive efforts, the westbound lanes remained closed for nearly nine hours before all lanes were reopened at approximately 8:00 p.m.
Your Rights After a Truck Accident in Fontana and the Inland Empire
Truck accidents on California freeways can result in serious injuries, property damage, and significant disruption. If you were involved in this incident or suffered injuries in a secondary collision caused by the sudden traffic stoppage, you may have legal options.
Under California law, victims of truck accidents may be entitled to compensation for medical expenses, lost wages, vehicle damage, and pain and suffering. Trucking companies and their insurers are required to carry substantial insurance policies, and an experienced car accident attorney can help you understand your rights and pursue the compensation you deserve.
Key steps to take after being involved in a truck accident include:
- Seek immediate medical attention, even if injuries seem minor
- Document the scene with photos and videos if safely possible
- Obtain the trucking company’s information and insurance details
- File a police report with the CHP or local authorities
- Contact a personal injury attorney before speaking with insurance adjusters
Do not wait to seek legal help. Contact DC Law Group at (310) 571-8860 or call (833) DC LAW 4 U for a free case evaluation. Our team is available 24/7.
Truck Accident Safety on Inland Empire Freeways
The 10 Freeway through Fontana and the Inland Empire is one of the busiest freight corridors in California, connecting the Ports of Los Angeles and Long Beach to distribution centers throughout the region. San Bernardino County consistently ranks among the highest in the state for truck-involved collisions.
Overturned trucks pose particularly dangerous situations because they can block multiple lanes simultaneously, create hazardous spills, and cause chain-reaction collisions among vehicles unable to stop in time. The extended closure from Monday’s incident highlights the significant impact a single truck accident can have on thousands of commuters and the regional transportation network.
If you have been injured in a truck or vehicle accident on the 10 Freeway or any Inland Empire freeway, DC Law Group can help you navigate the complex claims process involving commercial trucking companies and their insurance carriers.
Frequently Asked Questions
What caused the semi-truck to overturn on the 10 Freeway in Fontana?
The California Highway Patrol has not yet determined the cause of the semi-truck overturn. The incident occurred at the Citrus Avenue on-ramp on the westbound 10 Freeway at approximately 11:20 a.m. on March 17, 2026. The investigation is ongoing.
Were there any injuries reported in the Fontana truck accident?
Official reports have not confirmed any injuries from the initial truck overturn. However, the nine-hour freeway closure and resulting traffic diversions created hazardous conditions that may have contributed to secondary incidents.
How long was the 10 Freeway closed after the truck accident?
All four westbound lanes of the 10 Freeway were closed for nearly nine hours, from approximately 11:20 a.m. until 8:00 p.m. Traffic was diverted at the Citrus Avenue exit during the closure.
Can I file a claim if I was involved in a secondary crash?
If you were involved in a secondary collision caused by the sudden traffic stoppage from this incident, you may have a valid personal injury claim. Contact a personal injury attorney to discuss your specific situation and legal options.
What should I do if I was injured in a truck accident on the 10 Freeway?
Seek medical attention immediately, document your injuries and any evidence from the scene, and contact DC Law Group at (310) 571-8860 for a free consultation before speaking with any insurance company.
Who is liable when a semi-truck overturns on a California freeway?
Liability in truck overturn cases can involve the truck driver, the trucking company, the cargo loading company, or vehicle maintenance providers. An experienced attorney can investigate the circumstances and determine all potentially liable parties.