Supporters of an endangered bridge in Kennett Township plan to gather there Sunday to mark its 100th anniversary.

The Chester County-owned span, at Chandler Mill and Bucktoe Creek Roads, has sparked debate since 2005 when a plan to raze it with state Department of Transportation funding was announced because of its deterioration. Advocacy groups, who proposed rehabilitation, succeeded in placing the bridge on the National Register of Historic Places in January, a move the state challenged but failed to overturn. County officials have said the listing will require additional hearings, which have not yet been scheduled, but will not change the bridge's fate.

The Chandler Mill Bridge Consortium, one of the groups fighting to save the stone-and-steel bridge, is hosting the 1 p.m. public event. - Kathleen Brady Shea