Major Traffic Collision Disrupts I-15 in Rancho Cucamonga

Traffic Collision on Interstate 15 in Rancho Cucamonga Causes Delays Today

📍 Rancho Cucamonga, CA

📅 Published: July 4, 2025 at 08:07 PM

🔄 Updated: July 4, 2025 at 10:01 PM

Map showing the location of the accident in Rancho Cucamonga, CA
Rancho Cucamonga, July 4, 2025 -

A significant traffic collision occurred today on Interstate 15 North at the Foothill Boulevard off-ramp in Rancho Cucamonga, CA, involving four vehicles. The incident took place around 7:37 PM and included a white semi truck that flipped, a blue semi truck identified as “ALDI” that went over the embankment, a heavy-duty tractor trailer combo, and a vehicle with a refrigerated trailer loaded with perishables.

Emergency units responded promptly to manage traffic and secure the scene. As a result of the collision, lane closures and traffic diversions were implemented to ensure safe operations while the area was cleared. Motorists experienced delays and backups as crews worked to address the situation.

The blue semi truck landed near the Epic Event Center and SkyZone, further complicating traffic flow. A tow truck was called to assist with the heavy-duty tractor trailer combo, which was transporting a significant load of perishables.

Drivers are advised to seek alternate routes to avoid congestion and delays in the area. The California Highway Patrol is on site to manage the ongoing traffic incident and ensure safety for all motorists. Updates will be provided as the situation develops and the area is cleared.

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