Traffic Collision Blocks Lane on I-680 Off-Ramp

Traffic Collision on Interstate 680 South in Walnut Creek Causes Delays Today

📍 Walnut Creek, CA

📅 Published: September 29, 2025 at 06:00 PM

Map showing the location of the accident in Walnut Creek, CA
Walnut Creek, September 29, 2025 -

A traffic collision involving two vehicles occurred today on the Interstate 680 South off-ramp at Treat Boulevard in Walnut Creek, CA. The incident took place around 3:38 PM and involved a red Tesla and a white Honda. The collision resulted in the blockage of the left lane of the off-ramp, significantly impacting traffic flow in the area.

Emergency services responded quickly to the scene to manage the situation and alleviate traffic disruptions. By 3:57 PM, it was reported that one lane of the off-ramp remained blocked, causing delays for drivers in the vicinity. The emergency response teams worked efficiently to clear the area and restore normal traffic conditions.

By approximately 4:08 PM, the situation was under control, and the response teams continued to monitor the scene. The blockage led to congestion, affecting the afternoon commute for many motorists. Fortunately, the area was cleared by 4:39 PM, allowing traffic to resume its normal flow.

Motorists are advised to remain cautious and expect potential delays as residual congestion may linger in the area. The California Highway Patrol reminds drivers to stay alert and drive safely while navigating through the affected region.

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