There are 18,107 bridges in this category · Only showing 7,800 bridges with photos
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Structurally deficient

From: 2015 "Status of the Nation’s Highways, Bridges, and Transit: Conditions and Performance" report to Congress

Bridges are considered “structurally deficient” if (1) significant load-carrying elements are found to be in poor or worse-than-poor condition due to deterioration or damage, or (2) the adequacy of the waterway opening the bridge provides is determined to be insufficient to the point of causing intolerable traffic interruptions due to high water. That a bridge is structurally deficient does not mean it is unsafe.

Mountain Fork River CR 38 Bridge (Polk County, Arkansas)
Built 1905
Two-span pony truss bridge over Mountain Fork River on CR 38 near Potter
Open to one lane traffic

Mountain Road Bridge (Hunterdon County, New Jersey)
Built 1910; rehabilitated 1978
Pony truss bridge over Raritan Valley Line on Mountain Road
Open to traffic

Mountain Road Bridge (Sussex County, New Jersey)
Built 1893
Through truss bridge over Flat Brook on Mountain Road
Open to traffic

Mountville Road Bridge (Lawrence County, Pennsylvania)
Built 1940
Through truss bridge over Slippery Rock Creek on Mountville Road
Open to traffic

Mower Road Bridge (Saginaw County, Michigan)
Built 1920
Concrete pony/through girder bridge over Cole Drain on Mower Road
Open to traffic

Mozingo Branch Bridge (Nodaway County, Missouri)
Built 1926; rehabilitated 1940
Concrete tee beam bridge over Mozingo Branch on US 136
Open to traffic

MS 18 Bayou Pierre Bridge (Copiah County, Mississippi)
Built ca. 1940
Through truss bridge over Bayou Pierre on MS 18
Open to traffic

Mt Murphy Road Bridge (El Dorado County, California)
Through girder bridge built 1915, 2 center spans destroyed by flooding and truss installed 1931
Through truss bridge over South Fork American River on Mt Murphy Road
Open to traffic

Mt Vernon Avenue Bridge (San Bernardino County, California)
Built 1934
Steel stringer bridge over BNSF RR, Amtrak, UP RR,W 3rd St on Mt Vernon Avenue
Open to traffic but with temporary supports on the south end

Mt. Davis Road Bridge (Somerset County, Pennsylvania)
Built 1924; replaced 2015
Lost Concrete tee beam bridge over Elk Lick Creek on SR 2004 (Mt. Davis Road)
Replaced by a new bridge

Mt. Olive Road Bridge (Spotsylvania County, Virginia)
Built 1943
Pony truss bridge over North Anna River on Mt. Olive Road
Collapsed

Mt. Orne Covered Bridge 45-05-03 / 29-04-08 (Coos County, New Hampshire)
Built 1911; rehabilitated 1988
Covered bridge over Connecticut River on Mt. Orne Road in Lancaster
Open to traffic

Mt. River Branch Road Bridge (Fannin County, Georgia)
Built 1985, Closed 2005
Deck truss bridge over Young Stone Creek on Mt. River Branch Road
Closed 2005 when new bridge was built next to it

Mt. Tabor Road Bridge (Gibson County, Indiana)
Built 1905
Concrete arch bridge over Yellow Creek on Mt. Tabor Road
Open to traffic

Mud Creek Bridge (Benton County, Iowa)
Built 1900; replaced 2013
Lost pony truss bridge over Mud Creek on 25th Avenue
Replaced by a new bridge

Mud Creek Bridge (Buchanan County, Iowa)
Built 1953
Pony truss bridge over Mud Creek on 325th Street
Open to traffic

Mud Creek Bridge (Livingston County, Illinois)
Built 1901
Pony truss bridge over Mud Creek on TR 52A
Open to traffic

Mud Creek Bridge (Dickinson County, Kansas)
Pony truss bridge over Mud Creek, 1.0 mi. south and 0.2 mi. east of Manchester
Derelict/abandoned

Mud Creek Bridge (Craig County, Oklahoma)
Built ca. 1930
Arch bridge over Mud Creek on E0050
Open to traffic

Mud Creek Bridge (Tulsa County, Oklahoma)
Built ca. 1930, removed in April 2009
Lost Pony truss bridge over Mud Creek on Campbell Creek Rd. in western Tulsa County
Replaced by new bridge

Mud Creek Bridge (Hardin County, Tennessee)
Built ca. 1930
Wooden bridge over Mud Creek on Lacefield Drive (NFA A302)
Open to traffic

Mud Creek Bridge (Polk County, Iowa)
Built ca. 1920
Pony truss bridge over Mud Creek on SE Vandalia Road
Open to traffic

Mud Creek Bridge (Tipton County, Indiana)
Built ca. 1920; replaced 1991
Lost pony truss bridge over Mud Creek on CR 50 E
Replaced by new bridge

Mud Creek Bridge (Cobb County, Georgia)
Built 1928
Warren pony truss bridge over Mud Creek on Old Dallas Road
Preserved immediately north of current roadway and culvert

Mud Creek Bridge (Henry County, Illinois)
Built 1920
Concrete pony/through girder bridge over Mud Creek on E 2720 St
Open to traffic

Mud Creek Bridge (Polk County, Iowa)
Built 1913
Slab bridge over Mud Creek on SE Stewart Drive
Open to traffic

Mud Creek Bridge (Muscatine County, Iowa)
Built 1939
Steel stringer bridge over Mud Creek on Trail Avenue
Open to traffic

Mud Creek Bridge (Cattaraugus County, New York)
Built 1916; rehabilitated 1975
Pony truss bridge over Mud Creek on Kysor Hill Road
Closed to all traffic

Mud Creek CR 1159 Bridge (Monroe County, Missouri)
Built 1930; later moved here
Pony truss bridge over Mud Creek on CR 1159
Open to traffic

Mud Creek CR 200E Bridge (Tipton County, Indiana)
Replaced 1998
Lost pony truss bridge over Mud Creek on CR 200 E
Replaced by new bridge

Mud Creek CR 750S Bridge (Clinton County, Indiana)
Lost pony truss bridge over Mud Creek on CR 750 S
Replaced by new bridge

Mud Creek Road Bridge (Calumet County, Wisconsin)
Built 1930
Concrete stringer bridge over Mud Creek on Mud Creek Road in Town of Stockbridge
Open to traffic

Mud Lick Creek Bridge (Ohio County, Indiana)
Built 1916; replaced 1990
Lost pony truss bridge over Mud Lick Creek on Downey Ridge Road
Replaced by new bridge

Mud Pine Creek CR 875S Bridge (Benton County, Indiana)
Built 1935
Pony truss bridge over Mud Pine Creek on CR 875 South
Open to traffic

Mud River Bridge (Lincoln County, West Virginia)
Built 1917; rehabilitated 1980
Through truss bridge over Mud River on CR 7
Closed to Traffic

Mud Run CR 26T (Marseilles-Galion Rd.) Bridge (Marion County, Ohio)
Built 1940; rehabilitated 1984
Pony truss bridge over Mud Run on CR 26T (Marseilles-Galion Rd.)
Replaced by a new bridge

Muddy Boggy Creek Bridge (Choctaw County, Oklahoma)
Built 1919
Through truss bridge over Muddy Boggy Creek on E2010 Rd.
Open to traffic

Muddy Creek Bridge (Nemaha County, Kansas)
Built ca. 1930
Lost Queenpost pony truss bridge over Muddy Creek, 1.0 mi. west of Granada
Removed but not replaced

Muddy Creek Bridge (Crawford County, Pennsylvania)
Built 1895; rehabilitated 1996
Pony truss bridge over Muddy Creek on TR 776
Removed but not replaced

Muddy Creek Bridge (Greene County, Pennsylvania)
Built 1921
Concrete arch bridge over Muddy Creek on PA 88 in Fairdale
Open to traffic

Muddy Creek Bridge (Crawford County, Pennsylvania)
Built ca. 1900
Pony truss bridge over Muddy Creek on TR 743
Open to traffic

Muddy Creek Bridge (Richardson County, Nebraska)
Built 1953
Pony truss bridge over Muddy Creek on FAS 3645
Open to traffic

Muddy Creek CR 209 Bridge (Hamilton County, Ohio)
Built 1923; rehabilitated 1970
Through truss bridge over Muddy Creek on CR 209
Demolished.

Muddy Creek Old US 65 Bridge (Pettis County, Missouri)
Built 1924 by contractor M.E. Gillioz
Through truss bridge over Muddy Creek on Claycomb Road (Old US 65) north of Sedalia
Open to traffic

Muddy Run Bridge (Franklin County, Pennsylvania)
Built 1940; Removed 2013
Steel stringer bridge over Muddy Run on Pa 533;Sr 0533
Replaced by a new bridge in 2013

Mudville Road- White Creek (Livingston County, New York)
Bridge over White Creek on Mudville Rd
Open to traffic 8 ton limit

Mueller Bridge (Wilson County, Texas)
Built 1915 by the Alamo Construction Company; Closed to traffic in 1988
Pony truss bridge over Cibolo Creek on CR 337
Closed to all traffic

Mulberry Creek Bridge (Ford County, Kansas)
Built 1906; rehabilitated 1958
Through truss bridge over Mulberry Creek, 2.6 mi. south and 3.0 mi. west of Ford
Open to traffic

Mulberry Creek Bridge (Bates County, Missouri)
Built 1886 by the Missouri Valley Bridge & Iron Co.; later relocated here
Pony truss bridge over Mulberry Creek on 1002 Road, southeast of Amoret
Damaged irreparably by flood, replaced with concrete structure.

Mulberry Jefferson Road Bridge (Clinton County, Indiana)
Built 1895; replaced 1994
Lost through truss bridge over South Fork Wildcat Creek on Mulberry Jefferson Road at 280N-760W
Replaced by new bridge

Mulberry Relief Creek Bridge (Franklin County, Arkansas)
Built 1940
Steel stringer bridge over Mulberry Relief Creek on CR 67
Open to traffic

Mull Bridge (Shelby County, Indiana)
Built ca.1890
Through truss bridge over Little Blue River on CR 800 East
Intact but closed to all traffic

Mumma Ford Road Bridge (Carroll County, Maryland)
Built 1911; rehabilitated 1988 and summer 2011
Through truss bridge over Monocacy River on Mumma Ford Road
Open to traffic

Murdoch Avenue BNSF RR Overpass (St. Louis County, Missouri)
Built in 1930; demolished April 23rd, 2012. Replacement UCEB opened to traffic October 16th, 2012.
Lost concrete stringer bridge on Murdoch Avenue over the BNSF Railroad, just west of I-44
Replaced by UCEB

Muret Bridge (Cowley County, Kansas)
Built ca. 1890
Stone arch bridge over Silver Creek on 232nd Road southeast of Winfield
Open to one-lane traffic

Murphy Drive Bridge (Caldwell County, Missouri)
Built ca. 1930; replaced 2009
Pony truss bridge over Long Creek on S.W. Murphy Drive
Replaced by a new bridge

Murray Bridge (Humboldt County, Iowa)
Built 1905 by A.H. Austin; rehabilitated 1982; damaged in car wreck during 2004
Through truss bridge over West Fork Des Moines River on 190th Street, southeast of Bradgate
Open to traffic

Muscatatuck River CR 710S Bridge (Jackson County, Indiana)
Built ca. 1890; replaced 1994
Lost through truss bridge over Muscatatuck River on County Road 710 South
Replaced by new bridge

Muscatatuck River CR 775S Bridge (Jackson County, Indiana)
Built 1914; replaced 1992
Lost through truss bridge over Muscatatuck River on County Road 775 South
Closed to all traffic

Muscatatuck River SR 39 Bridge (Washington County, Indiana)
Built 1883; rehabilitated 1974; replaced 1992
Lost through truss bridge over Muscatatuck River on IN 39
Replaced by new bridge

Muscoot Reservoir Bridge (Westchester County, New York)
Built 1904
Steel deck arch bridge over Muscoot Reservoir on Lakeside Road
Closed to all traffic

Mussel Fork Route J Bridge (Macon County, Missouri)
Built 1958
Pony truss bridge over Mussel Fork on Route J
Open to traffic

Musselshell River Bridge (Musselshell County, Montana)
Built 1894
Through truss bridge over Musselshell River on CR 104
Open to traffic

Musselshell River Bridge (Musselshell County, Montana)
Built 1930
Through truss bridge over Musselshell River on CR 117
Open to traffic

Musselshell River Bridge (Musselshell County, Montana)
Built 1930
Through truss bridge over Musselshell River on CR 124
Open to traffic

Mustang Creek Bridge (Runnels County, Texas)
Built 1930
Pony truss bridge over Mustang Creek on CR 126
Open to traffic

Mute Creek Bridge (Osage County, Kansas)
Built ca. 1910
Pony truss bridge over Mute Creek, 3.0 mi. south and 1.2 mi. east of Osage City
Open to traffic

Mute Creek Bridge (Osage County, Kansas)
Built 1925
Girder bridge over Mute Creek on S Auburn Rd 71
Open to traffic

Mutton Creek CR 400N Bridge (Jennings County, Indiana)
Built 1905
Slab bridge over Mutton Creek on CR 400 North
Open to traffic

Mutton Creek Ditch Bridge (Jackson County, Indiana)
Built 1925
Pony truss bridge over Mutton Creek Ditc on Old CR 500 N
Replaced by a new bridge

Myers Creek Bridge (Curry County, Oregon)
Built 1924
Concrete tee beam bridge over Myers Creek on Meyers Creek Road (Old US 101)
Open to traffic

Myers Road Bridge (Warrick County, Indiana)
Built ca. 1920; rehabilitated 1987
Pratt bedstead pony truss bridge over Caney Creek on Myers Road
Open to traffic

Myrtle Creek Bridge (Curry County, Oregon)
Built 1925
Wooden bridge over Myrtle Creek on CR 500
Open to traffic

Mystic River Bridge (Middlesex County, Massachusetts)
Built 1906
Concrete arch bridge over Mystic River on MA 16 in Medford
Open to traffic

N Dawes Street Bridge (Fergus County, Montana)
Built 1940
Slab bridge over Big Spring Creek 061 on N Dawes Street
Open to traffic

N LINDSEY RD 691 over BRUSHY FK CR (Lincoln County, Missouri)
Bridge over Brushy Fork Creek on N Lindsey Rd
Open to traffic

N Timber Creek Bridge (Adair County, Missouri)
Built 1932
Steel stringer bridge over N Timber Creek on Route V
Open to traffic

N. 45th Street Bridge (Milwaukee County, Wisconsin)
Built 1952
Pony plate girder bridge over Menomonee River on N 45th Street in Milwaukee
Open to traffic

N. 50th Street Menomonee River Bridge (Milwaukee County, Wisconsin)
Built 1976
Pony truss bridge over Menomonee River on N. 50th Street in Milwaukee
FOUND! This elusive bridge is well hidden but extant behind private property.

N. East Street Bridge (Faribault County, Minnesota)
Built 1910; replaced 2002
Lost pony truss bridge over East Fork Blue Earth River on N. East Street in Blue Earth
Replaced by a new bridge

N. Hawley Road Bridge (Milwaukee County, Wisconsin)
Built 1917
Concrete arch bridge over Menomonee River on N. Hawley Road in Milwaukee
Replaced

Nachitoch Bluff Bridge (Clark County, Arkansas)
Built 1908 by the Morava Construction Co.; rehabilitated 1980; closed to traffic ca. 1996
Derelict two-span through truss over Little Missouri River, just upstream from I-30
Abandoned, with deck partially missing

Nacote Creek Bridge (Atlantic County, New Jersey)
Built 1904; rehabilitated 1952
Swing bridge over Nacote Creek on Smithville-Port Republic Road in Port Republic
Open To Traffic

Nahma Bridge (Delta County, Michigan)
Built 1917 by the Joliet Bridge & Iron Co.; closed to traffic in 1995; relocated Summer 2006
Pony truss bridge formerly over Sturgeon River on CR 497
Relocated to a golf course

Nantahala River Bridge (Swain County, North Carolina)
Built 1930; rehabilitated 1960
Pratt pony truss bridge over Nantahala River on NC 1100
Open to traffic

Nantahala River Bridge (Swain County, North Carolina)
Built 1930; rehabilitated 1960
Pratt pony truss bridge over Nantahala River on NC 1100
Open to traffic

Napa Creek Bridge (Napa County, California)
Built 1920; replaced 2006
Lost stone arch bridge over Napa Creek on First Street in Napa
Replaced by new bridge 2006

Napa River Bridge (Napa County, California)
Built 1949; rehabilitated 1977, replaced 2005
Vertical lift bridge over Napa River on CA 121 in Napa
Replaced by new "Maxwell Bridge", 2005

Napoleon Road Bridge (Allen County, Ohio)
Built 1928
Concrete curved chord through girder bridge over Little Hog Creek on Napoleon Road
Open to traffic

Narrow Bay Bridge (Suffolk County, New York)
Built 1959
Bascule bridge over Narrow Bay on Floyd Parkway Extension in Shirley
Open to traffic

Narrowsburg Bridge (Wayne County, Pennsylvania)
Built 1954
Steel arch bridge over Delaware River on PA 652/NY 52
Open to traffic

Nashannock Creek Bridge (Mercer County, Pennsylvania)
Built 1922
Through truss bridge over Nashannock Creek on TR 401 (Old Mercer Road)
Open to traffic

Nashua Road Bridge (Lawrence County, Pennsylvania)
Built 1981; replaced 2010
Lost Deck girder bridge over Shenango River on Nashua Road
Replaced by a new bridge

Nashville Creek Bridge (Washington County, Illinois)
Built 1930
Lost Pony truss bridge over Nashville Creek on Pelican Road (TR 144B)
demolished, but remants exist on site

Nathanson Creek Bridge (Sonoma County, California)
Built 1910; rehabilitated 1990
Wooden bridge over Nathanson Creek on Chase Street in Sonoma
Open to traffic

Natick Bridge (Kent County, Rhode Island)
Built 1910, replaced 2013
Concrete arch bridge over Pawtuxet River on East Avenue in West Warwick
Replaced by a new bridge

National Road Bridge over Branch of Buffalo Creek (Washington County, Pennsylvania)
Built 1929; replaced 2009
Lost Concrete tee beam bridge over Branch of Buffalo Creek on US 40 (National Road)
Replaced by a new bridge

Natural Pier Bridge (Mineral County, Montana)
Built 1916; rehabilitated 1999
Through truss bridge over Clark Fork on CR 089
Open to traffic

NE 67 North Fork Little Nemaha River Bridge (Otoe County, Nebraska)
Built 1951
Pratt Through Truss bridge over North Fork Little Nemaha River on NE 67, at Lorton
Open to traffic, 20 ton weight limit

Neal Lane Covered Bridge 37-10-07 (Douglas County, Oregon)
Built 1939
Covered bridge over South Myrtle Creek on CR 124 in Myrtle Creek
Open to traffic

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