KSDK - There's a new billboard in Lincoln County.
It features Bianca Piper.
She was 13 years old when she disappeared near her home in Foley, Missouri, on March 10, 2005.
Police have followed hundreds of tips over the years but few clues have surfaced.
Bianca's family was at a ceremony as the billboard was unveiled. Her mother was in Washington, D.C., last week to help unveil the expansion of a national program that helps find missing children.