Rio Mills was a 19th-century mill village located where the former Harrisonburg-Charlottesville Turnpike crossed the South Fork of the Rivanna River. Following the Battle of Rio Hill on 29 February 1864, Union General George Armstrong Custer burned the covered bridge and gristmill.
The gristmill was rebuilt under the direction of Abraham L. Hildebrand, and continued to grind wheat and corn for the Confederacy. The milling operation closed down after 1900. 
The bridge that carries Berkmar Drive Extended over the South Fork Rivanna River was named after Rio Mills by the Albemarle County Board of Supervisors in July 2019. 
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- ↑ Web. Rio Mills Marker, The Historical Marker Database, June 10, 2009, retrieved April 29, 2014.
- ↑ Web. 29 projects added to county's transportation priorities, News Staff, Daily Progress, Lee Enterprises, July 3, 2019, retrieved July 14, 2019.