A third person has died as a result of a highway collapse in south Mississippi two weeks ago.  Amanda Williams of Wiggins died Saturday after being hospitalized since the Aug. 30 collapse, WLOX-TV reports.  The collapse on Highway 26 outside Lucedale in George County, which occurred during torrential rain brought by Hurricane Ida, caused seven vehicles to crash into the washed-out roadway.  Two people died at the time of the crash, and 10 others were injured, including 39-year-old Wiggins and her 16-year-old daughter, Emily.  Emily Williams is currently recovering from a torn colon, a broken leg, and other injuries. Amanda Williams was being treated for her injuries at Forrest General Hospital in Hattiesburg when she died, according to WLOX.