Northbound Interstate 5 is slowed going into Downtown Portland Monday morning after a two semi-truck crash, officials said.

Traffic delays could be significant Saturday with the U.S. military planning to fire live artillery rounds over Interstate 5 ...

San Clemente became ground zero in the battle between California and the Trump administration over a pre-planned live-fire ...

CAMP PENDLETON — Ordnance fired over the 5 Freeway at Saturday’s 250th anniversary of the Marine Corps at Camp Pendleton ...

A live-fire demonstration is planned at Camp Pendleton on Saturday, Oct. 18. It coincides with "No Kings" protests planned ...

An artillery shell fired as part of the Marine Corps’ 250-year anniversary celebrations prematurely detonated over Interstate ...

The artillery rounds were fired over Interstate 5 near Camp Pendleton in San Diego as part of a military demonstration for ...

California closed part of Interstate 5 on Saturday after military officials confirmed artillery would be shot over the ...

The Monday morning crash created a miles-long traffic backup lasting nearly eight hours on Interstate 5 northbound in ...

The U.S. military demonstration that shot live-fire artillery rounds over Interstate 5 on Saturday dropped metal shrapnel on a California Highway Patrol vehicle, resulting in damage, agency officials ...

The mishap, during an anniversary celebration for the Marine Corps attended by the vice president and defense secretary, ...

CHP reports that a section of Interstate 5 in San Diego — from Harbor Drive to Basilone Road in Oceanside — will be closed ...