Interstate 5 Shutdown for Marine Corps Live-Fire Event Sparks Major Traffic Disruption

A critical stretch of California’s Interstate 5 is closing for several hours this Saturday. The shutdown is for a live-fire demonstration by the U.S. Marine Corps. The event marks the branch’s 250th anniversary at Camp Pendleton.

Officials confirmed the closure will run from 11 a.m. to 3 p.m. local time. The affected area spans 17 miles from Oceanside to San Onofre. According to Reuters, the decision was made for public safety due to live ammunition being discharged over the freeway.

Traffic and Transit Grind to a Halt

The closure will cause massive delays for the roughly 80,000 daily travelers. An estimated $94 million in freight also moves through this corridor daily. Officials are urging drivers to find alternate routes between Los Angeles and San Diego.

The impact extends beyond vehicle traffic. Amtrak service will be suspended between Orange and San Diego counties. This suspension eliminates a key alternative for travelers during the four-hour window.

The decision to close the freeway followed a week of uncertainty. Marine officials initially suggested the freeway would remain open. Governor Gavin Newsom’s office later confirmed the live-fire exercise required a full shutdown.

Safety and Spectacle Drive Unprecedented Closure

The California Highway Patrol (CHP) mandated the closure to prevent potential accidents. They were concerned about distracted drivers stopping to watch the event. “Overhead fire in progress” signs have been installed to warn motorists.

The Marine Corps’ 250th anniversary celebration is a significant event. It is expected to draw thousands of spectators and high-ranking officials. The live-fire demonstration is a central part of the commemorative activities.

The freeway is scheduled to reopen by 3 p.m. once the exercise concludes. This is a rare instance of a major interstate closing for a military ceremony. The move underscores the scale of the planned event at Camp Pendleton.

The Interstate 5 shutdown represents a major logistical challenge for Southern California. The temporary closure highlights the balance between public safety and commemorating a historic military milestone. Officials hope advanced warning will mitigate the travel chaos.

Thought you’d like to know

Why is Interstate 5 closed this Saturday?

The I-5 is closed for a U.S. Marine Corps live-fire demonstration. The event celebrates the branch’s 250th anniversary at Camp Pendleton. Live ammunition will be fired over the freeway.

What are the exact times and location of the closure?

The closure is from 11 a.m. to 3 p.m. Pacific Time. It affects a 17-mile stretch between Harbor Drive in Oceanside and Basilone Road near San Onofre. All lanes will be shut down.

Is Amtrak service affected by the I-5 closure?

Yes, Amtrak service is suspended between Orange and San Diego counties. The suspension is in effect for the duration of the freeway closure. No rail alternatives will be available in the corridor.

How many people will be impacted by this shutdown?

Approximately 80,000 travelers use this stretch of I-5 daily. The closure will also disrupt the movement of $94 million in freight. Major traffic delays are anticipated throughout the region.

Who authorized the closure of the interstate?

The California Highway Patrol ordered the closure for safety reasons. The decision was made in coordination with Governor Gavin Newsom’s office. It followed confirmation of the live-fire exercise from federal authorities.