Ellicott City, Maryland

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BO - Wilkins-Rogers Flour Mill Bridge (Baltimore County, Maryland)
Built c1880s to replace earlier covered bridge built c1830
Pratt through truss bridge over Patapsco River on B&O Railroad
Intact but closed to all traffic since 1972 flooding

Bonnie Branch Bridge (Howard County, Maryland)
Lane pony truss bridge over Bonnie Branch on Driveway
Open to traffic

BTCO - Patapsco River Bridge (Howard County, Maryland)
Lost Pratt through truss bridge over Patapsco River on Streetcar line (Baltimore Traction/Baltimore Transit)
Removed but not replaced

CSX - Ellicott City Bridge (Howard County, Maryland)
Built 1931
Pony/through plate girder bridge over Main Street on CSX Railroad
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

CSX - Patapsco River Bridge (Baltimore County, Maryland)
Built 1902 by the American Bridge Company; once carried 2 tracks
Through truss bridge over Patapsco River, Ilchester Road on CSX Railroad (formerly B&O Railroad Old Main Line)
Open to traffic

CSX - Union Dam Tunnel (Howard County, Maryland)
Tunnel under US 40 on Railroad (CSX)
Open to traffic

Ellicott City Covered Bridge (Howard County, Maryland)
Built 1868; Burned 1914
Lost Through truss bridge over Patapsco River on Main Street
Destroyed by fire

Hubbel Station Bridge (New location) (Howard County, Maryland)
Built ca 1905; replaced and disassembled 2013; relocated here ca 2016
Pratt pony truss bridge over Tiber River on driveway
Open to traffic on private drive

US40 Patapsco River Bridge (Baltimore County, Maryland)
Built 1936; reconstructed using original arches 2014
Concrete arch bridge over Patapsco River on US 40 in Woodlawn
Open to traffic