Major Traffic Disruption on I-405 South Today

Traffic Collision on Interstate 405 South in Santa Ana Causes Delays Today

📍 Santa Ana, CA

📅 Published: August 28, 2025 at 04:02 AM

🔄 Updated: August 28, 2025 at 05:00 AM

Map showing the location of the accident in Santa Ana, CA
Santa Ana, August 28, 2025 -

A traffic collision involving two vehicles occurred today on Interstate 405 South (I-405 S) at the junction with State Route 55 South (SR-55 S) in Santa Ana, CA. The incident was reported at approximately 3:38 AM and involved a grey Mercedes and an unknown vehicle. The collision took place in a construction zone, which complicated the traffic situation.

As emergency response units arrived on the scene, lane closures were implemented, resulting in temporary stoppages in traffic. This caused significant delays for early morning commuters, with backups extending into the main lanes of the highway. A tow truck was requested to assist in clearing the roadway, which further impacted traffic flow.

By 4:32 AM, responders were actively working to move the vehicles involved in the collision to alleviate congestion. Motorists are advised to seek alternative routes or expect delays if traveling through this area. The construction zone is already a known point of concern for traffic, and this incident has compounded the challenges for drivers navigating the busy morning commute.

Authorities are urging drivers to remain cautious and attentive while traveling through construction zones and to be aware of changing traffic conditions. Updates on the traffic incident will be provided as more information becomes available.

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