Major Traffic Disruption on State Route 12

Traffic Collision on State Route 12 in Napa Causes Major Delays Today

📍 Napa, CA

📅 Published: July 11, 2025 at 09:35 PM

🔄 Updated: July 12, 2025 at 01:00 AM

Map showing the location of the accident in Napa, CA
Napa, July 11, 2025 -

A significant traffic incident occurred today on State Route 12 Westbound near Kirkland Ranch in Napa, CA, leading to major traffic disruptions. The incident involved one vehicle that rolled over and was later towed from the scene for evidence collection.

Emergency services responded quickly to manage the situation, resulting in lane closures that caused considerable delays for drivers. Initially, the second lane was closed, but as the incident progressed, all lanes were eventually shut down to ensure the safety of emergency personnel and motorists. A signal alert was issued, indicating that traffic would be affected for approximately one hour, with authorities advising drivers to seek alternate routes to avoid congestion.

The traffic incident began around 8:50 PM and continued to impact traffic flow well into the night. As emergency crews worked diligently to clear the roadway, significant backups were reported for those traveling westbound from Kirkland Ranch to North Kelly.

Drivers are encouraged to remain cautious and stay informed about current road conditions, as the aftermath of this traffic collision may lead to ongoing delays. Authorities are actively managing the scene to restore normal traffic flow as quickly as possible.

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