Interstate 805 was closed in both direction near Interstate 8 because of police activity, officials said.
The incident began at 8:52 a.m. and prompted California Highway Patrol officers to close southbound lanes at the I-8 interchange. Transitions from eastbound and westbound I-8 were closed as well.
A man who had threatened to harm himself was taken into custody around 11 a.m. according to San Diego police.
To avoid any slowing, drivers should find alternate routes.
Anyone traveling northbound can use State Route 94 to access northbound I-5 or State Route 15. Drivers heading southbound can use State Route 52 to access southbound I-5 or southbound I-15.
CHP officers are diverting those drivers traveling southbound south of State Route 52 to I-8.