Major Traffic Collision Disrupts Morning Commute

Traffic Collision on State Route 121 in Sonoma Causes Major Delays Today

📍 Sonoma, CA

📅 Published: September 16, 2025 at 11:09 AM

🔄 Updated: September 16, 2025 at 03:00 PM

Map showing the location of the accident in Sonoma, CA
Sonoma, September 16, 2025 -

A traffic collision occurred today at the intersection of State Route 121 and Napa Road in Sonoma, CA, significantly impacting traffic flow during the morning commute. The incident involved two vehicles: a gray sedan and a dark gray small SUV. Shortly after the collision, all lanes were blocked, leading to considerable traffic congestion in the area.

Emergency response teams quickly arrived to manage the situation and direct traffic away from the affected intersection. Southbound traffic on State Route 121 was diverted off at Napa Road, and a signal alert was issued to inform drivers of the ongoing traffic incident.

The roadway remained closed for approximately one hour while crews worked to clear the scene. By 11:54 AM, the roadway was cleared, and all lanes were reopened, allowing traffic to resume its normal flow. Motorists are advised to remain cautious and aware of any residual delays as traffic begins to normalize.

This traffic incident highlights the importance of staying vigilant while driving, particularly in busy intersections. Drivers traveling through Sonoma, CA, should consider alternative routes during peak hours to avoid potential delays caused by unexpected traffic collisions.

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