The first stone masonry railroad bridge built in the United States, this 297-foot-long viaduct carried the earliest section of the B&O track across Gwynn’s Falls on the way to Ellicott’s Mills. The finely dressed ashlar stonework includes an arch 80 feet in diameter spanning the water and a smaller arch between two of the buttresses to accommodate a wagon road. Gwynn Falls Trail, accessible from Washington Boulevard, uses the former wagon road right-of-way under the viaduct, which still carries modern rail traffic like its larger counterpart, Thomas Viaduct (CM15)
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CARROLLTON VIADUCT
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