A group of Pennsylvanians who have been fighting for four years to save a c. 1910 bridge won a victory this month, when the National Park Service placed the Chandler Mill Bridge on the National Register of Historic Places.

The 16-foot-wide span, located in Kennett Township, is slated to be replaced with a new, two-lane bridge. But the National Register listing means that Chester County's plans to demolish the Chandler Mill Bridge must go through a review process, in accordance with Section 106 of the National Historic Preservation Act.

"It's really a triumph," says Gwen Lacy, executive director of the Kennett Township Land Trust. "It validates what we're trying to do."...