Baltimore County

Allender Road Bridge   [Map]
Lost Deck plate girder bridge over Csx Railroad on Allender Road
Replaced by a new bridge
Built 1945 by Baltimore & Ohio Railroad; Replaced 1998
Amtrak - B&P Tunnels   [Map · Street View]
Tunnel under Baltimore, MD on Amtrak Northeast Corridor
Open to traffic
Built 1873
Amtrak - Gunpowder River Bridge   [Map]
Girder bridge over Gunpowder River on Amtrak RR
Open to rail traffic, draw mechanism removed
Built 1912-13 one track at a time to replace wooden pile trestle
B&O - Patterson Bollman Bridge   [Map]
Lost Bollman through truss bridge over Patapsco River on Former Baltimore & Ohio Railroad
Replaced by a new bridge
Built 1869 atop washed-out ruins of Patterson Viaduct, replaced 1902-03 by line realignment
B&O - Patterson Viaduct   [Map]
Abandoned stone arch bridge over Patapsco River on Baltimore & Ohio Railroad
Derelict/abandoned
Built May-December 1829, washed out 1868 and replaced with Bollman truss until 1902-03; one arch and abutments remain
B&O - Wilkins-Rogers Flour Mill Bridge   [Map · Street View]
Pratt through truss bridge over Patapsco River on B&O Railroad
Intact but closed to all traffic
Built c1880s to replace earlier covered bridge built c1830
Bear Creek Bridge   [Map · Street View]
Bascule bridge over Bear Creek on MD 157 in Dundalk
Open to traffic
Built 1960; rehabilitated 1999
Beckleysvlle Road Bridge   [Map · Street View]
Through truss bridge over Pretty Boy Resevoir on Beckleysvlle Road
Open to traffic
Built 1931; rehabilitated 1986
Benson Mill Road Bridge   [Map]
Concrete arch bridge over Blackrock Run on Benson Mill Road
Open to traffic
Built 1909; rehabilitated 2001
Big Falls Road Bridge   [Map]
Concrete arch bridge over Gunpowder Falls on Big Falls Road
Open to traffic
Built 1933
Blackrock Run Bridge   [Map · Street View]
Pony truss bridge over Blackrock Run on Western Run Road
Open to traffic
Built 1974
Bottom Road Bridge   [Map]
Through truss bridge over Little Gunpowder Falls on Bottom Road
Open to traffic
Built 1886; rehabilitated 2001
Branch Long Green Creek Bridge
Concrete arch bridge over a branch of Long Green Creek on MD 147
Open to traffic
Built 1915
Brice Run Bridge
Concrete arch bridge over Brice Run on MD 125
Open to traffic
Built 1930
BTCO - Bear Creek Drawbridge   [Map]
Lost Warren through truss bridge over Bear Creek Estuary on Baltimore Transportaion Co.
Removed
Removed 1958
BTCO - Jones Creek Drawbridge   [Map]
Lost Deck plate girder swing bridge over Jones Creek on Baltimore Transit Company
No longer exists
Built 1906, removed after service ceased 1958
BTCO - North Point Creek Bridge   [Map]
Lost Deck plate girder swing bridge over North Point Creek on former Baltimore Transit streetcar line
Removed but not replaced
Built 1906; removed after end of streetcar service in 1958
BTCO - Patapsco River Bridge   [Map]
Lost Pratt through truss bridge over Patapsco River on Streetcar line (Baltimore Traction/Baltimore Transit)
Removed but not replaced
Bunker Hill Covered Bridge #1 20-03-01   [Map]
Lost Burr arch-truss bridge over Gunpowder Falls on Bunker Hill Road
Replaced by a new bridge
Built 1880, destroyed by arson 1961
Bunker Hill Covered Bridge #2   [Map]
Lost Burr arch-truss bridge over Gunpowder Falls on Bunker Hill Road
Destroyed by fire on August 8, 1971
Built 1963
Carroll Road Bridge   [Map · Street View]
Through truss bridge over Carroll Branch on Carroll Road
Open to traffic
Built 1879; rehabilitated 1991
Chesaco Avenue Bridge   [Map]
Girder bridge over Csx Railroad on Chesaco Avenue
Open to traffic
Built 1957; rehabilitated 1988
CSX - Bear Creek Drawbridge   [Map · Street View]
Bridge over Bear Creek on CSX Transportation
Open to traffic
CSX - Gunpowder River Bridge   [Map]
Deck Warren truss bridge with bowed lower chord over Gunpowder River on CSX Transportation (former Baltimore & Ohio RR,)
Open to traffic
Rebuilt by Baltimore & Ohio ca. 1906 as part of infrastructure upgrade at site of earlier bridge
CSX - Ilchester Tunnel   [Map]
Tunnel on CSX Railroad (formerly B&O Railroad Old Main Line)
Open to traffic
Built 1903
CSX - Oliver Viaduct   [Map · Street View]
Stone arch bridge over Tiber River and (Formerly) Baltimore & Frederick Turnpike on CSX Railroad
Open to traffic
Built 1829, Spans over Baltimore & Frederick Turnpike/Main Street removed 1931 and replaced.
CSX - Patapsco River Bridge   [Map · Street View]
Through truss bridge over Patapsco River, Ilchester Road on CSX Railroad (formerly B&O Railroad Old Main Line)
Open to traffic
Built 1902 by the American Bridge Company; once carried 2 tracks
CSX - Thomas Viaduct   [Map · Street View]
Eight-span stone arch bridge over Patapsco River on the B&O Railroad between Relay and Elkridge
Open to traffic
Built 1835
CSX - Union Dam Tunnel   [Map]
Tunnel under US 40 on Railroad (CSX)
Open to traffic
Cuba Road Bridge   [Map · Street View]
Through truss bridge over Western Run on Cuba Road
Open to traffic
Built 1893 by the Wrought Iron Bridge Co.; rehabilitated 1979
Deadman Run Bridge   [Map]
Girder bridge over Deadman Run on Mantua Mill Road
Open to traffic
Built 1930; rehabilitated 2001
Dogwood Road Bridge   [Map · Street View]
Concrete arch bridge over Dogwood Run on Dogwood Road in Woodlawn
Open to traffic
Built 1929
Dover Road Bridge   [Map]
Lost wooden bridge over CSX Railroad on Dover Road
No longer exists
Built 1907; rehabilitated 1992; replaced 2006
Ellicott City Covered Bridge   [Map]
Lost Through truss bridge over Patapsco River on Main Street
Destroyed by fire
Built 1868; Burned 1914
Falls Road Bridge   [Map]
Through truss bridge over Gunpowder Falls on Falls Road
Open to traffic
Built 1884; rehabilitated 1994
Francis Scott Key Bridge   [Map · Street View]
Steel through arch bridge over Patapsco River/Baltimore Harbor on Maryland Route 695 (Interstate 695)
Open to traffic
Built 1976
Franklintown Bridge   [Map · Street View]
Concrete arch bridge over Dead Run on Old Ingleside Avenue in Baltimore
Open to traffic
Built 1928
Golden Ring Road Bridge   [Map]
Concrete arch bridge over Stemmers Run on Golden Ring Road in Rossville
Open to traffic
Built 1933
Greene Branch Bridge
Concrete arch bridge over Greene Branch on MD 145
Open to traffic
Built 1929
Gunpowder Falls Bridge
Concrete arch bridge over Gunpowder Falls on MD 45
Open to traffic
Built 1924
Gunpowder Falls Bridge
Concrete arch bridge over Gunpowder Falls on MD 147
Open to traffic
Built 1929
Gwynn Oak Road Bridge
Concrete arch bridge over Gwynns Falls on Gwynn Oak Road
Open to traffic
Built 1900; rehabilitated 1937
Hanover Road Maryland Midland RR Overpass   [Map]
Steel stringer bridge over Maryland Midland Railroad on Md. Rt. 30 (Hanover Road)
Open to traffic
Built 1936
Haystack Branch Bridge
Concrete arch bridge over Haystack Branch on MD 147
Open to traffic
Built 1915
Jericho Covered Bridge 20-03-01 / 20-12-01   [Map · Street View]
Burr arch-truss bridge over Little Gunpowder Falls on Jericho Road
Open to traffic
built 1865, queenpost added 1937, stringers added 1982, heavily renovated 2015
Jones Falls Bridge
Concrete arch bridge over Jones Falls on MD 746A
Open to traffic
Built 1910
Lake Roland Bridge   [Map]
Lost Through truss bridge over Jones Falls on Road
Replaced by a new bridge
Built 1872; replaced during WWII
Little Falls Bridge   [Map]
Girder bridge over Little Falls on Dairy Road
Open to traffic
built ca. 1900, rehabilitated 2005
Little Gunpowder Falls Bridge
Concrete arch bridge over Little Gunpowder Falls on MD 7
Open to traffic
Built 1928
Little Gunpowder Falls Bridge
Concrete arch bridge over Little Gunpowder Falls on MD 147
Open to traffic
Built 1928
Loch Raven Reservoir Bridge   [Map · Street View]
Three-span through truss bridge over Loch Raven Reservoir / Gunpowder Falls on Warren Road (old MD 143)
Open to traffic
Built 1923; rehabilitated 1994
Ma & Pa - Wash House Trestle   [Map]
Deck plate girder bridge over Loch Raven Boulevard on Maryland & Pennsylvania Railroad
Removed
Removed 1959
Ma & Pa - York Road Overpass   [Map · Street View]
Lost Pony/through plate girder bridge over York Road on Maryland & Pennsylvania Railroad
Removed but not replaced
Masemore Road Bridge   [Map]
Through truss bridge over Gunpowder Falls on Masemore Road
Open to traffic
Built 1898; rehabilitated 2000
Matthews Bridge   [Map]
Lost Parker through truss bridge over Loch Raven Reservoir on MD-146 (Dulaney Valley Road)
Replaced by new bridge
Replaced 1976, Demolished 1978.
Mohrs Lane Overpass   [Map · Street View]
Girder bridge over Csx Railroad on Mohrs Lane
Removed but not replaced
Built 1912; rehabilitated 1989, closed June 2007, demolished March 2011 by CSX, to be replaced by new Campbell Blvd. Bridge ca. 2016
Mt. Zion Road Bridge   [Map]
Concrete arch bridge over Piney Run on Mt. Zion Road
Open to traffic
Built 1909
Old Paper Mill Bridge   [Map · Street View]
Bridge over Loch Raven Reservoir (Gunpowder Falls) on an old alignment of Paper Mill Rd
Closed to all traffic
Built 1922; bypassed 2000; rehabilitated in 1968 and again as historic landmark in 2007
Old Valley Road Bridge   [Map · Street View]
Concrete arch bridge over Jones Falls on Old Valley Road
Open to traffic
Built 1920; rehabilitated 1997
Old York Road Bridge   [Map]
Stone arch bridge over Little Falls on Old York Road (Md. 463)
Open to traffic
Built 1809; believed to be oldest bridge on Maryland road system
Orange Grove Swinging Bridge   [Map]
Wire suspension bridge over Patapsco River on Footpath
Open to pedestrians only
Patapsco River Bridge   [Map · Street View]
Concrete arch bridge over Patapsco River on US 1 in Baltimore
Open to traffic
Built 1915; rehabilitated 1952
Patapsco River Bridge
Concrete arch bridge over Patapsco River on MD 144
Open to traffic
Built 1914; rehabilitated 1972
Patapsco River Bridge   [Map · Street View]
Through Truss bridge over Patapsco River on Hollifield Road
Open to traffic
Built 1934; rehabilitated 2005
Patterson Viaduct Pedestrian Bridge   [Map]
Cable-stayed bridge over Patapsco River on Pedestrian pathway
Open to pedestrians only
Built 2006
Phoenix Road Bridge   [Map · Street View]
Deck truss bridge over Northern Central Rail-trail and Gunpowder Falls on Phoenix Road
Open to one lane traffic
Built 1922; rehabilitated 1982
Piney Grove Road Bridge   [Map · Street View]
Wooden bridge over CSX Railroad on Piney Grove Road
Open to traffic
Built 1907
Prettyboy Dam Road Bridge   [Map]
Concrete arch bridge over Pretty Boy Resevoir on Prettyboy Dam Road
Open to traffic
Built 1932; rehabilitated 1998
Race Road Bridge   [Map · Street View]
Concrete arch bridge over Stemmers Run on Race Road in Rossville
Open to traffic
Built 1929
Roland Run Bridge   [Map · Street View]
Bailey pony truss bridge over Roland Run on Circle Road
Open to traffic
Built 1988
Ruxton PRR Overpass   [Map · Street View]
Lost Pony truss bridge over Pennsylvania Railroad on Labelle Avenue
Replaced by a new bridge
Built 1888
Sparks Road Bridge   [Map]
Pratt through truss (with added arch) over Gunpowder Falls on Sparks Road
Open to traffic
Built 1888; rehabilitated 1990
Sudbrook Lane Bridge   [Map]
Steel stringer bridge over Csx Railroad on Sudbrook Lane
Open to traffic
Built 1907; rehabilitated 2006
Trenton Road Bridge   [Map]
Concrete arch bridge over Little Piney Run on Trenton Road
Open to traffic
Built 1927
US1 Overpass   [Map · Street View]
Pony/through plate girder bridge over CSX Railroad on Us 1
Open to traffic
Built 1930
US40 Patapsco River Bridge   [Map]
Concrete arch bridge over Patapsco River on US 40 in Woodlawn
Open to traffic
Built 1936; reconstructed using original arches 2014
Vinegar Hill Road Bridge   [Map · Street View]
Through truss bridge over Little Gunpowder Falls on Vinegar Hill Road in Kingsville
Open to traffic
Built 1894; rehabilitated 2000
Westchester Avenue Bridge   [Map · Street View]
Bailey pony truss bridge over Ravine,Bicycle Trail on Westchester Avenue
Open to traffic
Western Run Bridge
Concrete arch bridge over Western Run on MD 45
Open to traffic
Built 1917
Wise Avenue Bridge   [Map]
Bascule bridge over Bear Creek on Wise Avenue in Dundalk
Open to traffic
Built 1948; rehabilitated 1986
York Road Little Gunpowder Falls Bridge   [Map]
Concrete arch bridge over Little Falls on MD 45
Open to traffic
Built 1930