Morning Collision Disrupts Traffic on SR-4

Traffic Collision on State Route 4 in Antioch Causes Delays Today

📍 Antioch, CA

📅 Published: September 15, 2025 at 07:02 AM

🔄 Updated: September 15, 2025 at 07:38 AM

Map showing the location of the accident in Antioch, CA
Antioch, September 15, 2025 -

A traffic collision on State Route 4 (SR-4) in Antioch, CA, caused significant disruptions during the morning commute today. The incident involved two vehicles—a dark-colored small sedan and a GMC—and occurred near the Contra Loma Boulevard off-ramp around 6:21 AM.

As a result of the collision, lane closures were implemented on the eastbound side of SR-4, leading to increased congestion and delays for drivers. Emergency response units quickly arrived at the scene to manage traffic and ensure safety. Traffic management measures, including the placement of cones, were established to guide motorists through the affected area.

A tow truck was called to assist with the removal of one of the vehicles involved in the incident. By approximately 7:26 AM, emergency personnel were actively clearing the scene, allowing traffic to gradually resume its normal flow. However, motorists should remain cautious as residual delays may continue in the area.

Drivers are encouraged to seek alternative routes to avoid the impacted stretch of SR-4, particularly during peak travel times. The California Highway Patrol is overseeing the situation to ensure that the roadway is safe for all travelers.

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