The trial began on Monday in Caddo District Court.
Ureka Rochelle Black, 34, served as her own advocate in the trial.
Black was found guilty of murder and attempted murder for throwing her sons Joshua and Elijah off the Cross Lake bridge in September of 2021.
Joshua drowned, but first responders were able to rescue Elijah.
He identified his mother as their assailant, and she was apprehended at a rest stop in Texas near the Louisiana border.
Black faces a mandatory life term in prison. She was prosecuted by Assistant District Attorneys Jason Waltman, Christopher Bowman, and Kendra Joseph.