Lost 1868

B&O - Patterson Viaduct (Howard County, Maryland)
Built May-December 1829, washed out 1868 and replaced with Bollman truss until 1902-03; one arch and abutments remain
Abandoned stone arch bridge over Patapsco River on Baltimore & Ohio Railroad
Derelict/abandoned

IC - Rock River Bridge (2nd) (Lee County, Illinois)
Built 1862; Destroyed 1868 after being hit by parts of the Luckey Bridge
Lost Deck truss bridge over Rock River on Illinois Central Railroad
Replaced by a new bridge

Moore's Crossing Bridge (1852) (Hillsborough County, New Hampshire)
Built 1852
Lost through truss bridge over Merrimack River on RR
Replaced by a new bridge