Major Traffic Disruption on State Route 99

Traffic Collision on State Route 99 South in Atwater Causes Delays Today

📍 Atwater, CA

📅 Published: September 17, 2025 at 09:03 AM

Map showing the location of the accident in Atwater, CA
Atwater, September 17, 2025 -

A traffic collision on State Route 99 South in Atwater, CA, caused significant traffic disruptions during the morning commute today. The incident involved three vehicles: a semi truck, a motorcycle identified as the “RED NINJA MC,” and a white SUV. The motorcycle reportedly made contact with the semi truck, which continued southbound before coming to a stop. The white SUV sustained damage to its side mirror due to the collision.

Emergency response units were dispatched to the scene to manage traffic and ensure safety. As a result of the collision, multiple lanes were blocked, leading to delays and congestion for motorists traveling through the area. Vehicles were positioned on the right-hand side of the highway, further complicating the flow of traffic.

A tow truck was requested to assist with the removal of at least one vehicle that was not drivable. The traffic incident created a backup that affected drivers on State Route 99 South, prompting caution as emergency personnel worked to clear the scene.

Motorists are advised to seek alternate routes if possible and remain alert for ongoing traffic updates related to this incident. The situation is being managed by local emergency response teams, and further information will be provided as it becomes available.

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