HABS documented

Casselman Bridge (Garrett County, Maryland)
Built 1813 by David Shriver, Jr.
Stone arch bridge over Casselman River on Old US 40, east of Grantsville
Closed To All But Pedestrians in Casselman River Bridge State Park

Mission Espada Aqueduct (Bexar County, Texas)
Built between 1731 and 1745
Stone arch bridge over Piedras Creek on Acequia Madre
Still carries water