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Three Killed in Fiery Early-Morning Wrong-Way 91 Freeway Big-Rig Crash in Riverside

An SUV speeding eastbound in the westbound lanes collided head-on with a semi-truck near 14th Street, sparking hours of gridlock across the Inland Empire.

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Devastating head-on collision shatters the early-morning commute

November 12, 2026, 1:25 p.m. Eastern time.

Three people were killed and at least one other driver was hospitalized early Thursday morning following a catastrophic wrong-way collision involving an SUV, a big-rig tractor-trailer, and a third vehicle on State Route 91 in Riverside, California. The violent crash occurred shortly after 2:00 a.m. PST in the westbound lanes near the 14th Street overpass, paralyzing one of Southern California’s busiest transit arteries for over five hours.

According to preliminary findings by the California Highway Patrol (CHP) Riverside Area, emergency dispatchers began receiving desperate 911 calls reporting a white sports utility vehicle traveling at high speeds eastward in the westbound traffic lanes. Moments later, the errant SUV smashed head-on into a westbound commercial freightliner semi-truck, initiating a violent chain-reaction collision that also ensnared a trailing black BMW sedan.

When Riverside Fire Department crews and CHP officers arrived on scene, they discovered the white SUV overturned on its side, completely crushed, with heavy entrapment. The big rig sustained extensive front-end damage and ruptured its fuel saddle tanks, leaking diesel fuel across multiple travel lanes. Paramedics pronounced three occupants dead at the scene, while the driver of the third involved vehicle was extricated and transported to Riverside Community Hospital with non-life-threatening injuries, according to reporting by the Los Angeles Times.

CHP reconstructs high-speed wrong-way path and emergency response

Collision investigators from the CHP’s Multidisciplinary Accident Investigation Team (MAIT) spent several hours documenting skid marks, debris dispersion, and vehicle dynamics across the freeway roadbed. Authorities are examining where the wrong-way motorist first entered the freeway system and whether alcohol, drugs, or a medical emergency contributed to the fatal maneuver.

“Wrong-way collisions are among the most lethal incidents our officers investigate because the closing speeds leave virtually zero reaction time for oncoming motorists,” a CHP spokesperson said during a morning press briefing. “We are working to determine the entry point and are reviewing regional traffic cameras and automated toll monitoring systems.”

Coroner officials from the Riverside County Sheriff-Coroner Department responded to the scene to recover the deceased and have withheld their identities pending positive forensic confirmation and notification of next of kin.

Inland Empire gridlock and emergency hazmat cleanup

The collision triggered an immediate SigAlert, with Caltrans District 8 diverting all westbound 91 traffic off the freeway onto Central Avenue and 14th Street surface streets. Morning rush-hour traffic backed up several miles through downtown Riverside, spilling onto connecting spans of Interstate 215 and State Route 60.

Hazardous materials crews worked alongside Caltrans maintenance teams to absorb and neutralize dozens of gallons of spilled diesel fuel and engine fluids to prevent contamination of municipal storm drains. Following rigorous safety inspections and debris clearance, Caltrans announced that all lanes had successfully reopened shortly before 7:30 a.m. PST.

Crash location on State Route 91 in Riverside

The red star marks the crash scene on westbound State Route 91 near the 14th Street exit in downtown Riverside, California.

Map data: © OpenStreetMap contributors, ODbL.

Timeline of the November 12 collision and highway shutdown

2:02 a.m. PST: CHP dispatch centers receive multiple emergency calls regarding a vehicle traveling eastbound at high speed in the westbound lanes of SR-91.

2:05 a.m. PST: The wrong-way SUV crashes head-on into a big-rig commercial semi-truck near 14th Street; a third sedan collides into the wreckage.

2:18 a.m. PST: First responders from Riverside Fire and CHP arrive on scene, confirming three fatalities and initiating a full freeway shutdown.

2:30 a.m. PST: Caltrans District 8 issues a formal SigAlert, establishing mandatory detours at Central Avenue.

5:15 a.m. PST: Coroner personnel conclude on-scene recovery as hazmat teams begin neutralizing spilled diesel fuel.

7:25 a.m. PST: Caltrans and CHP complete scene clearance and officially reopen all westbound lanes of SR-91 ahead of peak morning travel.