Piedmont Mill Historic District is a historic grist mill complex and national historic district located near Boones Mill, Franklin County, Virginia. It encompasses six contributing buildings and six contributing structures associated with the Piedmont Mill. They include the Piedmont Mill (c. 1866); a one-lane metal truss bridge manufactured in Roanoke, Virginia, by Roanoke Iron and Bridge Works, in 1929; the earthen mill race with concrete sluice and intact head gate, and the concrete mill dam, rebuilt in 1936; two two-story weatherboarded frame dwellings (c. 1870); the “upper miller’s house;” and a pole barn dating to about 1920. The mill is a three-story, weatherboarded frame structure, set upon an uncoursed fieldstone foundation, with an early, if not original, one-story, gable-roofed e