Philadelphia, Wilmington & Baltimore Railroad

Reporting mark: PWB
Newkirk Viaduct 38-51-04x (Philadelphia County, Pennsylvania)
Built 1847; destroyed by fire 1863
Lost Through truss bridge over Schuylkill River on Road & railroad
Destroyed by fire & replaced

PRR - Sleepy Hollow Bridge (Cecil County, Maryland)
Abandoned through truss bridge over Basin Run Creek on Railroad

PWB Railroad Bridge (Harford County, Maryland)
Built 1866, replaced in stages through the 1870s by an iron truss structure on the same footings
Lost truss bridge over Susquehanna River on Philadelphia, Wilmington & Baltimore Railroad
Replaced by a new bridge

Susquehanna River Bridge (Harford County, Maryland)
Original bridge replaced in stages 1873-1886; Converted to road use ca 1910 by private owners; Converted to a double-decker ca. 1923 by the state of Maryland; Replaced 1940; Removed 1943
Lost Pratt through truss and swing bridge over Susquehanna River on Road
Removed but not replaced at exact site