Los Angeles/ Crime & Emergencies

Fatal 5 Freeway Pileup Near Norwalk Snarls Thursday Commute for Hours

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Published on September 10, 2026
Fatal 5 Freeway Pileup Near Norwalk Snarls Thursday Commute for HoursSource: Eric Polk / Wikimedia Commons

A deadly pileup on the 5 Freeway near Norwalk sent traffic into chaos overnight, after an Amazon big rig, a cargo van, and two other vehicles collided just after midnight Thursday, leaving at least one person dead. The wreck blocked several southbound lanes for hours, with crews still working to clear the scene as the Thursday morning commute got underway.

According to the New York Post, the California Highway Patrol's Santa Fe Springs station responded to the crash scene along with the Los Angeles County Fire Department. The Amazon truck involved was left with front-cab damage and a shattered windshield, while the cargo van ended up on its side with heavy damage, per the same report. The condition of the drivers of the other two vehicles involved remains unclear, and at least one death was confirmed near Norwalk, according to ABC 7.

Overnight Wreck Snarls Southbound Lanes

Debris was scattered across the roadway near Norwalk, and officials worked to clear it while tow trucks were called in to move some of the mangled vehicles from the scene, the station's report notes. Despite the scale of the wreckage, traffic remained backed up in the area as of around 7 a.m. Thursday, even though the California Highway Patrol reportedly did not issue a formal SigAlert for the closure. Under CHP's own operational criteria, a SigAlert is meant to be declared for any unplanned traffic event that blocks at least one lane for 30 minutes or more, according to Wikipedia, a designation that traces back to 1955 and Los Angeles radio pioneer Loyd Sigmon.

The crash remains under investigation, with the exact cause and the drivers' conditions still unreported at this time. Norwalk, a city in Los Angeles County located about 15 miles southeast of downtown Los Angeles, sits at a strategic hub where Interstate 5 meets Interstate 605, according to LA County Public Works, a corridor where regional commuter traffic collides with heavy commercial shipping routes.

A Freight Corridor Under Constant Strain

The CHP's Santa Fe Springs Area command, which handled the response, patrols more than 135 freeway miles across southeast LA County — including I-5, I-105, and I-605 — serving an estimated 1.2 million daily motorists, according to Greg Hill & Associates. Urban segments of I-5 in Los Angeles County can carry between 170,000 and 200,000 vehicles a day, per Caltrans data cited by California Highways, meaning even a single blocked lane can cascade into gridlock as commuter traffic builds.

Commercial big rigs like the Amazon truck involved are also bound by California Vehicle Code Section 22348(c), which requires multi-axle trucks to stay in the far-right lane or the one immediately next to it on freeways with three or more lanes in each direction, and caps their speed at 55 mph statewide, according to Justia Law. A driver cited for violating that lane restriction faces 1.5 DMV points and potential Compliance, Safety, and Accountability severity penalties reported to the Federal Motor Carrier Safety Administration, per GetDismissed. It is not known whether lane placement or speed played any role in Thursday's crash.

Latest in a String of Deadly Amazon-Linked Crashes

Thursday's wreck adds to a string of serious crashes involving Amazon vehicles across Southern California in recent months. In July, a 22-year-old motorcyclist died in Huntington Beach after crashing into an Amazon truck at Beach Boulevard and Slater Avenue, with police reporting the Amazon driver stayed at the scene and cooperated with investigators. Weeks later, a fatal pre-dawn pedestrian collision near Alameda Avenue forced CHP to shut down all southbound lanes of the 5 Freeway in Burbank for nearly four hours. And in late 2024, a multi-vehicle crash on I-5 in East Los Angeles involving an Amazon delivery vehicle spilled cargo across the roadway and caused major morning commute delays.

Investigators have not yet said what caused Thursday's crash near Norwalk, and it remains unclear whether either driver will face citations once the CHP completes its review. For now, commuters along one of the region's busiest freight corridors are left navigating the aftermath of another overnight wreck that turned a routine Thursday commute into a slow crawl.