Traffic Collision Disrupts Morning Commute in Diamond Bar

Traffic Collision on State Route 57 in Diamond Bar Causes Delays Today

📍 Diamond Bar, CA

📅 Published: March 13, 2025 at 07:39 AM

Map showing the location of the accident in Diamond Bar, CA
Diamond Bar, March 13, 2025 -

A traffic collision on northbound State Route 57 in Diamond Bar, CA, has resulted in significant traffic disruptions this morning. The incident, which occurred around 6:09 AM, involved two vehicles: a silver Nissan Frontier and a United Commercial Truck. Both vehicles were blocking the high-occupancy vehicle lane, leading to lane closures and rerouted traffic.

Emergency services arrived promptly to manage the situation, directing traffic and advising motorists of necessary adjustments due to the ongoing lane closures. As a result, drivers can expect delays and potential backups in the area, particularly during the busy morning commute.

The California Highway Patrol has assigned units for scene control, ensuring that traffic is rerouted as needed to minimize congestion. A tow truck was called to assist with the removal of the vehicles involved in the collision, which has further contributed to traffic delays.

Motorists traveling in the vicinity of northbound State Route 57 near Diamond Bar Boulevard should plan for extended travel times and consider alternative routes to avoid the area. The situation is still developing, and updates will be provided as more information becomes available.

Drivers are encouraged to stay alert and follow posted detour signs while navigating through the affected region.

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