Major Collision Disrupts Traffic in Cupertino

Traffic Collision on State Route 85 in Cupertino Causes Lane Closures Today

📍 Cupertino, CA

📅 Published: September 4, 2025 at 12:32 PM

🔄 Updated: September 4, 2025 at 02:00 PM

Map showing the location of the accident in Cupertino, CA
Cupertino, September 4, 2025 -

A significant traffic collision occurred today at the intersection of State Route 85 North and Interstate 280 South in Cupertino, CA, involving four vehicles, including a big rig and a junk dump truck. The big rig overturned on its side, while the dump truck left debris across the lanes, creating hazardous conditions for drivers.

Emergency response teams quickly arrived at the scene to manage traffic and ensure safety. As a result of the collision, multiple lanes were closed, leading to traffic delays and congestion, particularly affecting the afternoon commute. The transition from Northbound State Route 85 to Southbound Interstate 280 was also closed, further complicating traffic flow.

A towing request was initiated to clear at least one vehicle from the scene, although this request was later canceled. Emergency units worked diligently to control the situation and restore normal traffic conditions as quickly as possible.

Motorists are advised to avoid the area and seek alternate routes to minimize delays. The situation is still developing, and updates will be provided as more information becomes available. Drivers should remain cautious and stay tuned for further details regarding lane reopenings and the overall impact on traffic in Cupertino, CA.

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