Major Traffic Disruptions Following Sonoma Collision

Traffic Collision on State Route 37 in Sonoma Causes Delays Today

📍 Sonoma, CA

📅 Published: July 16, 2025 at 06:35 PM

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

A traffic collision occurred today at the intersection of State Route 37 and State Route 121 in Sonoma, CA, causing significant traffic disruptions during the evening commute. The incident involved two vehicles: a personal vehicle, which remained drivable, and a semi-truck that was rendered undriveable and will require towing.

Emergency units were quickly dispatched to the scene to manage traffic and establish an 80-meter control zone near a traffic light at Lakeville/Sears Point. This control zone has resulted in noticeable delays and congestion for drivers navigating through the area. The semi-truck's presence on the right-hand shoulder has further complicated traffic flow, prompting responders to implement traffic management measures.

As the situation develops, motorists are advised to seek alternative routes to avoid potential backups. The personal vehicle was moved from the roadway, but the semi-truck remains in place until a tow truck arrives to remove it. The ongoing traffic incident is expected to impact travel times for those heading toward San Rafael and surrounding areas.

Drivers are encouraged to stay updated on traffic conditions and exercise caution when approaching the affected intersection. The California Highway Patrol is on-site to ensure safety and facilitate the clearing of the roadway as quickly as possible.

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