Major Collision Closes State Route 166 in CA

Traffic Collision on State Route 166 in New Cuyama Causes Major Delays Today

📍 New Cuyama, CA

📅 Published: September 30, 2025 at 09:32 PM

🔄 Updated: October 1, 2025 at 01:00 AM

Map showing the location of the accident in New Cuyama, CA
New Cuyama, September 30, 2025 -

A significant traffic collision occurred today at the intersection of State Route 166 and Chimineas Ranch Road in New Cuyama, CA, involving two vehicles: a semi-truck that rolled onto its side and a big rig. The semi-truck caught fire, prompting a swift emergency response.

As a result of the incident, both lanes of State Route 166 are currently closed, leading to major traffic disruptions and congestion in the area. Key intersections, including the crossing with US Highway 101, are also experiencing full closures. Debris from the collision is obstructing traffic flow, and emergency personnel are actively managing the scene.

Fire suppression efforts are underway for the semi-truck, which remains in the eastbound lane, further complicating the situation. Multiple traffic management units and Department of Transportation personnel are on-site to coordinate the response and ensure safety.

Motorists are advised to expect significant delays and are encouraged to seek alternative routes to avoid the affected area. The Department of Transportation has indicated that no through traffic is allowed on State Route 166 until the situation is resolved. Updates will be provided as the cleanup progresses, and drivers are urged to exercise caution while navigating the area.

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