Major Traffic Collision Blocks SR-4 in Discovery Bay

Traffic Collision on State Route 4 in Discovery Bay Causes Major Delays Today

📍 Discovery Bay, CA

📅 Published: August 14, 2025 at 10:34 AM

🔄 Updated: August 14, 2025 at 12:00 PM

Map showing the location of the accident in Discovery Bay, CA
Discovery Bay, August 14, 2025 -

A traffic collision occurred today on State Route 4 (SR-4) near Old River Bridge in Discovery Bay, CA, significantly impacting traffic flow in both directions. The incident, involving two vehicles—a truck pickup and a white Toyota Cam—was reported around 10:20 AM during the morning commute.

As a result of the collision, all lanes on SR-4 were blocked, leading to considerable traffic delays and congestion. Emergency response teams were quickly dispatched to the scene to manage traffic and ensure safety for all motorists. Multiple units were on-site to assist with traffic control and direct drivers to alternate routes.

Authorities issued a signal alert to inform the public about the blockage and advised motorists to avoid the area to minimize delays. The California Department of Transportation was also notified to help manage the situation and provide updates.

By 10:56 AM, both eastbound and westbound lanes remained closed due to the ongoing traffic incident. Emergency personnel worked diligently to clear the roadway and restore normal traffic conditions. Motorists were encouraged to stay informed and plan their travel accordingly as the situation developed.

This traffic incident underscores the importance of safe driving practices and the potential for unexpected road conditions. Further updates on the traffic situation on State Route 4 in Discovery Bay, CA, will be provided as they become available.

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