Danville, Virginia — The American South (Mid-Atlantic)
Union Street Dam & Bridge
In 1816, the Roanoke Navigation Company constructed the Union Street Dam across the Dan River to divert water into its twenty-foot-wide canal. Located on the south side of the river, the canal enabled bateaux (long slender boats capable of carrying to 10 tons of cargo) to navigate around the falls near the point where Main Street crossed the river.
The dam was probably made with wood timbers forming a hollow crib structure filled with stone. In 1883, this barrier was replaced by a more substantial structure that allowed an increased amount of water to flow into the south-side canal, which by then was doubled in width to forty feet. Another canal, to be used to power the new plants then being built by Riverside Mills along the north side of the river, received water impounded by the dam.
The new ten-foot high Union Street Dam, constructed of granite slabs, bowed upstream and allowed for the free overflow of water. Just one year following construction, the structure was retrofitted with a stone fishway known as a McDonald Fish Ladder to conform to newly enacted state wildlife laws. This allowed spawning fish to continue upstream past the dam.
In the nineteenth century, the new dam was called sometimes "Morotock Dam." A high bluff known as "Lover's Leap," overlooked "Morotock Lake, a favorite spot for weekend boating by Danvillians of the Victorian era. The name was borrowed from the Native Americans of the Moratoc Tribe which inhabited this area well into the eighteenth century.
Union Street Bridge is the fourth thoroughfare across the river at this site. In 1883, a wooden covered bridge was constructed on stone masonry piers. ln 1911, it was replaced by a concrete arch structure using the same piers. A wider steel beam bridge was built above the earlier structure in 1934 using concrete pedestals above the original piers. In 1994, the present steel girder bridge replaced the 1934 structure with the original piers being used through reinforcement with concrete at their bases.
Historical text provided by F Lawrence McFall, Jr.
Photo from Art Works of Danville, 1903 Layout & design by Kim Demont (formerly Vaden & Associates).
A project of the City of Danville. Plaque production sponsored by The Danville Riverview Rotary Club.
Erected by City of Danville and the Danville Riverview Rotary Club.
Topics and series. This historical marker is listed in these topic lists: Bridges & Viaducts • Industry & Commerce • Waterways & Vessels. In addition, it is included in the Rotary International series list. A significant historical year for this entry is 1816.
Location. 36° 35.707′ N, 79° 23.775′ W. Marker is in Danville, Virginia. It can be reached from Union Street Bridge Road south of Riverside Drive (Business U.S. 58), on the right when traveling east. The Marker is located along the Riverwalk Trail at the Union Street Bridge trailhead. Touch for map. Marker is at or near this postal address: 132 Union Street Bridge Road, Danville VA 24540, United States of America. Touch for directions.
Regionally, this marker is in Southside Virginia and specifically in Central Virginia. It is also in the American South and specifically in the Upper South. Globally, it is in the North Atlantic Region, North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once the territory of the Mississippian Culture, one of the original Thirteen Colonies, one of the Confederate States of America, and the Antebellum South.
Other nearby markers. At least 8 other markers are within walking distance of this marker: The Dan River (within shouting distance of this marker); Preservation Alliance of Virginia (within shouting distance of this marker); The Wreck of the Old 97 (within shouting distance of this marker); Union Street Bridge (within shouting distance of this marker); Union Street Dam (within shouting distance of this marker); Danville Historic Mill District (about 600 feet away, measured in a direct line); Roanoke Navigation System (about 700 feet away); a different marker also named Union Street Bridge (approx. 0.2 miles away). Touch for a list and map of all markers in Danville.
Credits. This page was last revised on July 25, 2025. It was originally submitted on January 3, 2025, by C. Ryan Dodson of Danville, Virginia. This page has been viewed 429 times since then and 35 times this year. Photos: 1, 2, 3, 4, 5. submitted on January 3, 2025, by C. Ryan Dodson of Danville, Virginia. • Bernard Fisher was the editor who published this page.




