Philadelphia & Reading Railroad, Peacock's Lock Viaduct, Spanning Schuykill River at Reading Railroad, Reading, Berks County, PA
Significance: The Peacock's Lock Viaduct, named after a nearby lock on the Schuylkill Division Canal, may be the only masonry arch bridge in the U.S. with pierced spandrels. The circular openings between arches lighten the structure in both weight and appearance.
Survey number: HAER PA-118
Building/structure dates: 1853-1856 Initial Construction