Southbound Diamond Bar Boulevard, between Quail Summit Drive and Mountain Laurel Way is temporary closed due to a fallen pine tree that is blocking the roadway. Northbound travel is also heavily impacted.
Public Works Department staff are assisting with traffic control operations and crews are onsite working to clear the roadway. It's anticipated the roadway will reopen by approximately 3:30 p.m. There are detour options available for traffic via the local streets.
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