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Theoretically, the answer is yes. Dimensions of the bowties and their spacing are important for best results. The youtube design has too-small bowties spaced too closely together, so the overall array is far less sensitive, especially at the lower end of UHF. Read up on the design information at the site I linked to - you'll probably end up building either the middle or smallest sized one.
My view of DC stations is similar to your view of Hampton Roads. Richmond is almost exactly 180 degrees the other way, so I plan on building one of these soon for my attic install. The biggest risk, besides the loss through the roof, is multipath from signals bouncing off metal things. Be prepared to try multiple locations if you find your initial setup does not perform correctly.
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