An early-morning traffic collision on southbound Highway 101 near the Sheffield exit in Santa Barbara County has resulted in a major highway closure and traffic diversions.
The incident occurred at approximately 1:40 a.m. on Thursday, September 24, 2026, when Montecito Fire responded to a collision involving four vehicles and two semi-trucks.
Despite the severity of the multi-vehicle incident, no injuries were reported.
Multi-Vehicle Crash Closes Highway 101
According to Montecito Fire, emergency crews responded to the collision on southbound Highway 101 near the Sheffield Drive exit during the early morning hours.
A total of six vehicles, including four passenger vehicles and two semi-trucks, were involved in the incident.
Following the collision, fuel leaked onto the roadway and debris was scattered across the highway, creating hazardous conditions for other motorists.
Because of the fuel leakage and debris, authorities closed the southbound lanes at Sheffield Drive while crews worked to make the roadway safe.
Traffic Diverted at San Ysidro
Motorists traveling southbound on Highway 101 are being diverted at San Ysidro as emergency and highway crews respond to the incident.
The closure is expected to cause delays for drivers traveling through the area during the morning commute.
At the time of the initial report, officials had not provided an estimated reopening time for the affected section of Highway 101.
Drivers are advised to allow additional travel time and seek alternative routes where possible.
No Injuries Reported
Despite the involvement of multiple vehicles and two semi-trucks, no injuries were reported following the collision.
There were no reports of fatalities or serious injuries connected to the incident at the time of the initial emergency response.
The primary concerns remained the fuel leak, roadway debris and safe removal of the vehicles involved.
Highway Reopening Time Not Yet Available
Crews must clear debris and address the fuel leakage before the highway can safely reopen.
An official estimated time for reopening the southbound lanes was not available at the time of the report.
Motorists should avoid the affected section of Highway 101 and follow directions from California Highway Patrol officers and other emergency personnel at the scene.
Personal and Accident Details
| Detail | Information |
|---|---|
| Incident | Multi-vehicle traffic collision |
| Date | Thursday, September 24, 2026 |
| Time | Approximately 1:40 a.m. |
| Location | Southbound Highway 101 near Sheffield Drive |
| Area | Santa Barbara County, California |
| Vehicles Involved | 4 vehicles and 2 semi-trucks |
| Total Vehicles | 6 |
| Fatalities | None reported |
| Injuries | None reported |
| Hazard | Fuel leakage and roadway debris |
| Southbound Lanes | Closed at Sheffield Drive |
| Traffic Diversion | San Ysidro |
| Reopening Time | Not available |
| Emergency Response | Montecito Fire and California Highway Patrol |
| Cause of Crash | Not available |
| Investigation | Not available |
Drivers Warned of Delays
The Highway 101 closure is expected to affect southbound traffic as crews continue working at the scene.
Motorists should expect delays and follow posted detours and instructions from emergency personnel.
Drivers are encouraged to check updates from the California Highway Patrol’s Santa Barbara area before traveling through the affected section.
The roadway will remain closed until crews determine that the fuel spill and debris have been safely cleared.
Disclaimer
This report is based on the initial information provided by Montecito Fire regarding the September 24, 2026, Highway 101 collision. Conditions at the scene may change as emergency and highway crews continue their response. No injuries were reported at the time of the initial report, and no reopening time had been provided. Additional details may be updated as authorities release further information.