CHATSWORTH, LOS ANGELES — Drivers traveling through the West Valley encountered a traffic collision on the US-101 Freeway near Chesebro Road, where California Highway Patrol responded to a multi-vehicle crash and temporarily restricted lanes while the incident was handled.
The collision was reported on the southbound side near the Chesebro Road off-ramp, with initial information indicating multiple vehicles were involved and possible injuries. CHP subsequently issued a temporary SIG Alert as emergency and freeway-service crews worked at the scene.
101 Freeway Crash Near Chesebro Road
The incident was reported during the afternoon on September 17, 2026, near the US-101 and Chesebro Road interchange.
Initial CHP information described a multi-vehicle collision, with reports indicating that several vehicles may have been involved. The crash affected traffic lanes and prompted a temporary warning for motorists approaching the area.
Because early traffic reports can change as officers investigate and crews clear disabled vehicles, the initial description of the collision remained subject to 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 |
| Initial injuries | Unknown / possible injury reported |
| Traffic response | CHP response and temporary SIG Alert |
| Lanes affected | Multiple lanes temporarily affected |
| Current status | Incident later reported clear |
| Investigation | CHP traffic investigation |
CHP Issues Temporary SIG Alert
The crash prompted CHP to issue a temporary SIG Alert for the affected section of the freeway.
Traffic information indicated that lanes were temporarily blocked while crews responded. Tow and freeway-service resources were also involved in clearing the roadway.
Later CHP information indicated that the roadway had been cleared and the SIG Alert was no longer needed.
That change means the immediate crash response had ended, although motorists could still encounter residual congestion as traffic volumes returned to normal.
Traffic Conditions on the 101 Freeway
The US-101 is one of the major transportation corridors serving Southern California, and even a short-lived lane restriction can create delays during busy travel periods.
Drivers heading through the West Valley should therefore distinguish between the reported crash location and conditions elsewhere on the freeway. A collision near Chesebro Road does not necessarily indicate that the entire 101 Freeway is experiencing major restrictions.
Traffic conditions can also change quickly after a crash is cleared because vehicles that were delayed begin moving through the affected corridor.
What Is Known About Injuries
Initial CHP information listed injuries as unknown, and no confirmed injury total was included in the available traffic record.
There was also no confirmed fatality associated with this particular Chesebro Road collision in the information reviewed.
Additional details could change if authorities release a later crash report or provide further information about the people involved.
Investigation and Roadway Status
CHP’s traffic record showed the incident as cleared after emergency crews completed their response.
The circumstances that led to the collision, including the sequence of impacts and whether any driver behavior contributed to the crash, were not established in the available information.
Motorists should continue to use caution around the interchange and allow additional travel time when traffic is heavy.
Disclaimer
This article is based on available traffic information concerning the US-101 collision near Chesebro Road. Initial accident information can change as authorities complete their investigation and update their records. Injury information, vehicle details and other circumstances may remain subject to confirmation.