US-101 Accident Today in Chatsworth – Multi-Vehicle Crash Near Chesebro Road Prompts Temporary Lane Restrictions
A US-101 accident today in Chatsworth caused temporary traffic restrictions on the southbound freeway near the Chesebro Road off-ramp as California Highway Patrol responded to a reported multi-vehicle collision.
The crash was reported during the afternoon of September 17, 2026, near the US-101 and Chesebro Road interchange. Several vehicles were reportedly involved, and initial information indicated that injuries were possible but had not been confirmed.
CHP responded to the scene and issued a temporary SIG Alert while lanes were restricted and crews worked to clear the collision.
101 Freeway Crash Near Chesebro Road
The collision occurred on the southbound US-101 Freeway near Chesebro Road in the Chatsworth area of Los Angeles' West Valley.
Early traffic information described the incident as a multi-vehicle crash. Because information from an active freeway collision can change as officers investigate and vehicles are removed, the initial details remained subject to further updates.
Accident Details
| Detail | Information |
|---|---|
| Highway | US-101 Freeway |
| Area | Chatsworth / West Valley, Los Angeles |
| Location | Near Chesebro Road off-ramp |
| Direction | Southbound |
| Incident type | Multi-vehicle traffic collision |
| Injuries | Unknown / possible injury initially reported |
| Response | California Highway Patrol |
| Traffic alert | Temporary SIG Alert |
| Lanes | Multiple lanes temporarily restricted |
| Roadway status | Incident later reported clear |
| Investigation | CHP traffic investigation |
CHP Responds and Issues SIG Alert
The collision prompted CHP to issue a temporary SIG Alert for the affected portion of the freeway.
Multiple lanes were restricted while emergency personnel and freeway-service crews handled the scene. The temporary closures and restrictions created an additional traffic concern for drivers approaching the Chesebro Road interchange.
CHP later reported that the incident had been cleared and the SIG Alert was no longer active.
Although the immediate emergency response ended, motorists could still experience delays afterward as traffic that had accumulated during the restriction moved through the area.
Traffic Impact on the US-101
The US-101 is a major Southern California freeway, meaning even temporary lane restrictions can affect traffic during busy periods.
Drivers traveling through Chatsworth and the surrounding West Valley should be aware that congestion following a cleared crash can continue for some time. Conditions may also differ significantly between the Chesebro Road interchange and other portions of the 101 Freeway.
Motorists should follow CHP instructions and exercise caution when approaching an area where a collision has recently been cleared.
Were There Injuries?
Initial information associated with the crash listed injuries as unknown, and no confirmed number of injured people was available in the information reviewed.
There was also no confirmed fatality associated with this particular collision in the available traffic information.
Further details could become available if CHP releases additional information or completes its investigation.
Investigation Into the Crash
CHP was handling the traffic investigation into the collision. The available information did not establish how the vehicles collided or whether any specific driver action contributed to the crash.
Investigators may determine additional details as they review the circumstances surrounding the incident.
For now, the roadway response has concluded, although residual congestion may remain after the temporary lane restrictions.
Roadway Status
The temporary SIG Alert was later cleared after crews completed their work at the scene.
Drivers should nevertheless remain alert around the Chesebro Road interchange, particularly where emergency vehicles or disabled vehicles may still be clearing the area.