In 1813, after construction of the Casselman River Bridge was completed in Grantsville, Maryland by David Shriver, Junior, the structure became the largest stone arch structure in the United States of America. The Casselman River Bridge was built along the the Cumberland Road, which was part of the first national highway, and is next to present day Highway 40.
Presently, the stone bridge is part of the Casselman River Bridge State Park that is nextdoor to the Spruce Forest Artisan Village.
Hamilton Historical Records 