Two Semi Trucks Collide, Causing Major Traffic Delays

Traffic Collision on Interstate 15 South in Rancho Cucamonga Causes Delays Today

📍 Rancho Cucamonga, CA

📅 Published: September 16, 2025 at 11:32 AM

Map showing the location of the accident in Rancho Cucamonga, CA
Rancho Cucamonga, September 16, 2025 -

A traffic collision involving two semi trucks occurred today at the interchange of Interstate 15 South and Interstate 210 West in Rancho Cucamonga, CA. The incident was reported around 9:23 AM, causing significant disruptions during the morning commute. Initially, two lanes were blocked, leading to traffic delays and congestion in the area.

Emergency services quickly arrived on the scene to manage the situation. A liquid spill was reported, prompting a request for a tow truck to assist with the recovery of one of the vehicles. By 9:38 AM, a signal alert was issued, indicating that traffic would be affected for at least an hour due to the recovery efforts of the loaded truck.

As the situation progressed, traffic management units worked to restore order on the roadway. By 10:48 AM, one lane was reopened, allowing some traffic to flow, although backups continued. A temporary shutdown of a second lane was necessary around 11:08 AM to facilitate the recovery process. By 11:17 AM, the right-hand side of the roadway was cleared, and traffic began to return to normal.

Motorists are advised to remain cautious in the area as residual delays may persist following the incident. The prompt response from emergency services helped minimize the impact of this traffic incident on the busy interchange.

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