Major Collision Closes SR-4 Eastbound Lanes

Traffic Collision on State Route 4 in Antioch Causes Significant Delays Today

📍 Antioch, CA

📅 Published: August 6, 2025 at 07:56 PM

🔄 Updated: August 6, 2025 at 09:03 PM

Map showing the location of the accident in Antioch, CA
Antioch, August 6, 2025 -

A significant traffic collision occurred today on the eastbound lanes of State Route 4 (SR-4) near the Somersville Road on-ramp in Antioch, CA. The incident involved five vehicles, including a white work van, a white van, and a blue SUV, potentially a RAV4. As a result of the crash, all eastbound lanes of SR-4 were closed, leading to considerable traffic delays and congestion in the area.

Emergency response teams were quickly deployed to manage the scene and direct traffic away from the affected lanes. A tow truck was called to assist with the removal of the vehicles involved in the collision. Traffic was diverted off the highway at the Somersville off-ramp, causing backups that extended beyond the immediate area.

Motorists are advised to seek alternate routes to avoid delays as the situation develops. The closure of all eastbound lanes is expected to create significant traffic delays for the afternoon commute, so drivers should plan accordingly. Authorities have issued a signal alert for the area, indicating that the eastbound lanes of SR-4 will remain closed until further notice. Updates will be provided as more information becomes available regarding the traffic incident and the reopening of the highway.

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