Morning I-5 Gridlock in San Joaquin County Follows Fiery Big Rig Crash

Key points

• The incident occurred around 5:34 a.m. on northbound I-5 north of Stockton, near the Highway 12 off-ramp.
• Four vehicles were involved in the crash, including a big rig carrying mail, a pickup truck, and two other cars.
• All individuals involved sustained only minor injuries and were able to walk away from the scene.
• Caltrans reported congestion extending from Highway 12 to Hammer Lane by 7:00 a.m.
• Lanes 1 and 2 reopened by 8:25 a.m., but Lane 3 remained closed with no estimated reopening time.
• The big rig driver, Amrit Singh, stated he could not stop in time after a vehicle ahead moved into the left lane.

Background

Recent traffic incidents in California have highlighted various causes of multi-vehicle crashes, including wrong-way driving and e-bike collisions. For instance, a fugitive’s wrong-way sprint on Highway 4 in Concord in October 2026 caused a head-on collision, while earlier e-bike crashes in San Diego and Vista resulted in fatalities. These events underscore the ongoing challenges of traffic safety and congestion management in the state.

Why it matters

The crash significantly impacted morning commute times for thousands of drivers in San Joaquin County, highlighting the vulnerability of major freight corridors like I-5 to sudden, severe incidents. The extended closure of Lane 3 and the lack of a reopening estimate indicate potential long-term disruptions to regional traffic flow and logistics.

What to watch

The California Highway Patrol is investigating the crash, with initial reports suggesting a lane change issue as a possible cause. Authorities are expected to provide more details as the investigation progresses. Drivers are advised to monitor Caltrans updates for lane reopening times and to plan alternative routes to avoid ongoing congestion.