Where and how long will the I-5 be shut down near Camp Pendleton?

Editor's note: This story has been updated to reflect that the closure will begin around noon, according to CHP. The timeline is subject is change.

CAMP PENDLETON, Calif. (FOX 5/KUSI) -- A section of Interstate 5 near Camp Pendleton will be shut down Saturday, Oct. 18, due to a military event involving the discharge of live ammunition over the freeway, according to a press release from California Highway Patrol (CHP).

The temporary closure, which is being implemented due to safety concerns, will affect both northbound and southbound lanes of I-5 between Harbor Drive and Basilone Road. The shutdown is scheduled to begin around noon, per CHP, and will remain in effect until the event concludes. The end time is expected to be around 3 p.m.

The military operation is being conducted as part of the United States Marine Corps’ 250th Anniversary celebration, an event in which Vice President JD Vance will attend. A former Marine himself, Vance is slated to deliver remarks to honor the military branch.

Governor Gavin Newsom issued a sharp statement Saturday morning, blasting the federal government’s decision to move forward with the event. He stated, “The President is putting his ego over responsibility with this disregard for public safety. Firing live rounds over a busy highway isn’t just wrong — it’s dangerous."

Despite the pushback, the temporary closure will still go into effect.

Drivers are being warned of significant delays not only on I-5 but also on others major routes throughout Southern California before, during and after the event. CHP is strongly advising motorists to seek alternative routes and to plan for extra travel time.

For the most current traffic conditions and updates on the closure, travelers are encouraged to check Caltrans’ QuickMap.