Major Collision Causes Traffic Chaos on Highway 101

Traffic Collision on U.S. Highway 101 in Cotati Causes Delays Today

📍 Cotati, CA

📅 Published: September 15, 2025 at 06:39 AM

🔄 Updated: September 15, 2025 at 07:38 AM

Map showing the location of the accident in Cotati, CA
Cotati, September 15, 2025 -

A traffic collision occurred today on U.S. Highway 101 North at the W Sierra Avenue off-ramp in Cotati, CA, involving four vehicles. The incident took place during the busy morning commute, leading to significant traffic impact in the area.

The vehicles involved included a gray sedan, a white Chevrolet pickup, a Mazda pickup, and a gray Toyota. Due to the collision, lane restrictions were implemented in both lane 1 and lane 2, causing delays and congestion for motorists traveling through the area.

Emergency response teams arrived promptly to manage the scene and direct traffic. Some vehicles were assessed as drivable, while others were designated for towing due to damage sustained in the crash. A tow truck was requested for the gray Toyota, which had a twisted back wheel, and additional towing services were called for the Mazda pickup.

Traffic management units worked diligently to ensure the safety of all motorists and to facilitate the clearing of the roadway. Drivers are advised to expect potential backups and to consider alternative routes if possible. Updates will be provided as the situation develops and normal traffic flow is restored.

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