The workers would share their sandwiches with him. Other days, they'd bring spare construction materials and build him a makeshift shelter from the elements.
The dog, who they named Demo, was all licks and gratitude for every scrap of compassion. At some point, a worker, worried about the dog's condition, called an animal rescue.
The story, published in The Dodo last month, won the dog a legion of admirers from around the world.
The day after it ran, Demo's day finally came - he was taken in by the Blue Ridge Humane Society.