Built 1829

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BO - 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

Broadfording Bridge (Washington County, Maryland)
Built 1829; rehabilitated 2005
Stone arch bridge over Conococheague Creek on Broadfording Road in Maugansville
Open to traffic

Conococheague Creek Bridge (Washington County, Maryland)
Built 1829; rehabilitated 1987
Stone arch bridge over Conococheague Creek on MD 68 (Clearspring Rd.)
Open to traffic

CSX - Carrollton Viaduct (Baltimore, Maryland)
Built in 1829 for the Baltimore and Ohio Railroad, this is the oldest railroad bridge in the world still in use.
Stone arch bridge over Gwynn's Falls
Open to traffic

CSX - Oliver Viaduct (Howard County, Maryland)
Built 1829, Spans over Baltimore & Frederick Turnpike/Main Street removed 1931 and replaced.
Stone arch bridge over Tiber River and (Formerly) Baltimore & Frederick Turnpike on CSX Railroad
Open to traffic

D&H Gravity Railroad Stone Arch Bridge (Wayne County, Pennsylvania)
Built 1829; Abandoned 1931
Stone arch bridge over Little Keen Pond on D&H Gravity Railroad
Intact but closed to all traffic

Danville Covered Bridge (Original) (Northumberland County, Pennsylvania)
Built 1829; collapsed March 17, 1875
Lost Burr arch-truss bridge over Susquehanna River on Mill Street
Collapsed and replaced by new Covered Bridge

Main Street Covered Bridge (Somerset County, Maine)
Built 1829 as a covered pony truss; repaired 1832 and 1843; fully covered ca.1878;
Lost Town lattice truss covered bridge over Kennebec River on Main Street
Destroyed by fire in 1906

Morris Canal - Little Falls Aqueduct (Passaic County, New Jersey)
Lost Stone arch aqueduct over Passaic River on Morris Canal
Removed but not replaced

Morris Canal - Pompton River Aqueduct (Passaic County, New Jersey)
Lost Pony truss aqueduct over Pompton River on Morris Canal
Removed but not replaced

NH - Salmon Brook Arch (Hartford County, Connecticut)
Built 1829; replaced between 1934 and 1944
Lost Stone arch bridge over Salmon Brook on New Haven Railroad
Replaced by a new bridge

Roberts Covered Bridge 35-68-05 (Preble County, Ohio)
Built 1829 by Orlistus Roberts on Old Camden Road; damaged by arson 1986; relocated and restored 1991
Covered bridge over Seven Mile Creek in Eaton
Open to pedestrians