A major traffic disruption struck Highway 92 near the San Mateo-Hayward Bridge Friday evening after an overturned box truck blocked the eastbound roadway in Hayward, California.
The crash occurred just before 5 p.m. on September 25, 2026, during the busy Friday evening commute. The incident forced the closure of all eastbound lanes near Clawiter Road, creating significant backups that extended west toward San Mateo.
According to the latest report, the lanes have since reopened, but the collision caused substantial delays for motorists traveling across the bridge and through the surrounding East Bay area.
What Happened on Highway 92?
The crash involved a box truck that overturned on eastbound Highway 92 shortly after the toll plaza near Clawiter Road.
Video from the scene showed the truck lying on its side across the roadway as emergency and highway crews worked to clear the wreckage.
At the height of the incident, all eastbound lanes were blocked, forcing motorists to slow down or seek alternative routes.
Authorities had not publicly established the exact circumstances that caused the truck to overturn in the latest available report.
Major Traffic Backups Toward San Mateo
The collision created widespread congestion along Highway 92.
Traffic reportedly backed up all the way into San Mateo, affecting drivers attempting to cross between the Peninsula and the East Bay.
The timing of the crash also amplified its impact because it occurred shortly before the evening commute intensified.
Motorists traveling through the area were urged to allow additional travel time and remain alert for emergency vehicles and traffic-control operations.
Were There Any Injuries?
As of the latest available update, authorities had not confirmed whether anyone was injured in the crash.
No fatality had been reported in connection with the overturned truck in the available information.
Because the investigation and roadway response were still developing, additional information about the driver, passengers, injuries or circumstances of the collision could be released later.
Highway 92 Crash Investigation
Authorities are continuing to examine the circumstances surrounding the collision.
The precise reason the box truck overturned has not been publicly established. Investigators may consider roadway conditions, vehicle movement and other factors as they work to determine what happened.
Motorists should also be aware that Highway 92 has separate scheduled construction and maintenance activity around the San Mateo-Hayward corridor, meaning additional traffic restrictions can occur independently of the crash. Caltrans has announced overnight SR-92 interchange work beginning September 27.
San Mateo Bridge Accident: Key Details
| Detail | Information |
|---|---|
| Highway | State Route 92 / Highway 92 |
| Area | Hayward, California |
| Nearby location | Clawiter Road / San Mateo-Hayward Bridge |
| Date | September 25, 2026 |
| Approximate time | Just before 5 p.m. |
| Vehicle involved | Box truck |
| Crash type | Overturned truck |
| Direction affected | Eastbound |
| Initial road closure | All eastbound lanes blocked |
| Traffic impact | Major backups toward San Mateo |
| Injuries | Not confirmed in latest report |
| Current roadway status | Lanes subsequently reopened |
| Investigation | Ongoing |
Drivers Should Expect Changing Conditions
Although the crash-related lane closure has been cleared, traffic conditions around the bridge can change quickly because of the volume of vehicles using the Highway 92 corridor.
Drivers approaching the San Mateo-Hayward Bridge should watch for changing traffic conditions, follow posted signs and give emergency and highway crews sufficient room to operate safely.
Additional information about the crash may become available as authorities complete their investigation.
Latest Update on the Highway 92 Crash
The Friday evening collision serves as another major disruption on one of the Bay Area’s important cross-bay routes.
For now, the most recent confirmed information is that an overturned box truck blocked eastbound Highway 92 near Clawiter Road, causing major traffic congestion before the lanes were reopened. Authorities had not confirmed injuries in the latest available update.
Disclaimer: This article is based on preliminary reporting and information available at the time of publication. Details concerning the circumstances of the crash, possible injuries and the investigation may change as authorities release additional information.