The closure was in effect for about 30 minutes on the northbound and southbound lanes of the freeway at Florence Avenue.
Traffic was seen completely stopped around 5 p.m. as authorities assisted at the scene.
The northbound side appeared to be moving again at about 5:20 p.m.
Not long after, the southbound side was reopened, but the traffic backup remained for miles.
The woman threatening to jump was taken into custody and transported to a nearby hospital for medical assistance.