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Carroll County

Baptist Road Alloway Creek (North) [Map]
Bridge
Open to traffic

Baptist Road-Alloway Creek (South) [Map · Street View]
Bridge
Open to traffic

Bullfrog Road Bridge [Map · Street View]
Through truss bridge over Monocacy River on Bullfrog Road
Open to traffic
Built 1908 by the York Bridge Co.; rehabilitated 1995

CSX - Twin Arch Road Overpass [Map]
Stone arch bridge over Twin Arch Road and South Branch Patapsco River on B&O RR
Open to traffic

CSX Mount Airy Tunnel [Map]
Tunnel on CSX (former B&O)
Open to traffic
Built 1901 for B&O

Keymar Bridge [Map]
Lost stone arch bridge over Little Pipe Creek on MD-194
Replaced by a new bridge

Liberty Reservoir Bridge
Deck truss bridge over Liberty Reservoir on MD 32
Open to traffic
Built 1952; rehabilitated 1994

McKinstry's Mills Bridge [Map · Street View]
Pony truss bridge over Sams Creek on Pearre Road
Open to traffic
Built 1908; rehabilitated 1997

MMID - Little Pipe Creek Trestle [Map · Street View]
Deck plate girder bridge over Little Pipe Creek and Keymar Road on MMID (former PRR)

MMID Monocacy River Bridge [Map]
Baltimore through truss bridge over Monocacy River on MMID (former WM)
Open to traffic
Built for WM Rwy

Monocacy River Bridge [Map]
Steel stringer bridge over Monocacy River on Keysville Fr Co Road
Open to traffic

Monocacy River Bridge [Map · Street View]
Concrete arch bridge over Monocacy River on MD 140
Open to traffic
Built 1925

Monocacy River Bridge [Map · Street View]
Bailey pony truss bridge over Monocacy River on Harney Road
Open to traffic
Built 1989

Mumma Ford Road Bridge [Map · Street View]
Through truss bridge over Monocacy River on Mumma Ford Road
Open to traffic
Built 1911; rehabilitated 1988 and summer 2011

Piney Creek Bridge [Map]
Steel stringer bridge over Piney Creek on Baumgardner Road
Closed to all traffic
Built 1925; rehabilitated 1991

Simpsons Mill Road Bridge [Map · Street View]
Through truss bridge over Little Pipe Creek on Simpsons Mill Road
Open to traffic
Built ca. 1890; rehabilitated 1998

Sixes Bridge Road Bridge [Map · Street View]
Two-span through truss bridge over Monocacy River on Sixes Bridge Road
Open to traffic
Built 1910; rehabilitated 1995

Starners Dam Bridge [Map]
Steel stringer bridge over Alloway Creek on Baptist Road
Open to traffic
Built 1918; rehabilitated 1987