There are 14,183 bridges in this category · Only showing 6,149 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.


Monroe Street Bridge (Calhoun County, Michigan)
Built 1891; rehabilitated 1951
Stone arch bridge over Rice Creek on Monroe Street in Marshall
Open to traffic

Montana Road Bridge (Boone County, Iowa)
Built ca. 1920, replaced 2017
Lost pony truss bridge over Honey Creek on Montana Road
Replaced by a new bridge

Montegue Road Bridge (Winnebago County, Illinois)
Built 1936
Concrete rigid frame bridge over E Branch Mill Creek on Montague Road
Demolished

Montezuma Bridge (Parke County, Indiana)
Built 1949; rehabilitated 1987
Six-span through truss bridge over Wabash River on US 36 at Montezuma
Open to two-lane traffic

Montgomery Creek Bridge (Boone County, Iowa)
Built 1923; replaced 2015
Lost pony truss bridge over Montgomery Creek on W Avenue
Replaced by a new bridge

Montour Run Bridge (Columbia County, Pennsylvania)
Built ca. 1880; rehabilitated 1927
Stone arch bridge over Montour Run on TR 356 in Bloomsburg
Open to traffic

Monument Road Bridge (Harris County, Georgia)
Built 1930
Pony truss bridge over Sand Creek on Monument Road
Closed to all traffic

Moonville Bridge (Madison County, Indiana)
Built 1930; replaced 1999
Lost pony truss bridge over Killbuck Creek on CR 600 N
Replaced by new bridge

Moore Bridge (Knox County, Missouri)
Built 1909 by John Moore
Pony truss bridge over North Fork South Fabius River on CR 24
Open to traffic

Moores Creek Bridge (Chambers County, Alabama)
Built 1910
Pratt through truss bridge over Moores Creek on 19th Avenue in Valley
Closed

Mores Creek Bridge (Ada County, Idaho)
Built 1953
Steel arch bridge over Mores Creek (Lucky Peak Reservoir) on ID 21
Open to traffic

Morgan Bridge (Shelby County, Tennessee)
Built 1905
Arch bridge over the BNSF Railroad on Dudley Street in Memphis
Open to traffic

Morgan Bridge (Grant County, Oregon)
Built 1976
Polygonal Warren pony truss bridge over John Day River on CR 57 (Morgan Road)
Open to traffic

Morgan Road Bridge (Jefferson County, Indiana)
Built ca. 1910; rehabilitated 1935
Pony truss bridge over Middlefork Creek on Morgan Road in Big Oaks F&W Area.
Open to traffic but with access limited by request.

Morgan Street Bridge (Winnebago County, Illinois)
Built 1916; rehabilitated 1960; replaced 2013
Concrete bridge over Rock River on Morgan Street, 0.2 mi. east of Main St
Gone in 2011. Replaced by a new bridge in 2013.

Morris Branch Bridge (Callaway County, Missouri)
Built 1935. Bypassed and abandoned 2001
Pony truss bridge over Morris Branch on CR 1053
Intact but closed to all traffic

Morris Bridge (Grundy County, Illinois)
Built 1934; rehabilitated 1978; replaced 2002
Lost five-span through truss bridge over the Illinois River on IL 47 at Morris
Replaced by modern bridge

Morris Road Bridge (Crawford County, Pennsylvania)
Built ca. 1935
Pony truss bridge over Western New York and Pennsylvania Railroad tracks on TR 653
Removed but not replaced

Morris Road Bridge (Montgomery County, Pennsylvania)
Built 1841; rehabilitated 1916
Stone arch bridge over Wissahickon Creek on Morris Road near Fort Washington, PA
Open to traffic

Morris Run Bridge (Bucks County, Pennsylvania)
Built 1908
Concrete deck girder bridge over Morris Run on Rickert Road
Closed To Traffic.

Morris Street Bridge (Marion County, Indiana)
Built 1928; rehabilitated 1981
Open Spandrel arch bridge over White River on Morris Street in Indianapolis
Open to traffic

Morrison Creek Bridge (Sullivan County, Indiana)
Built ca. 1927
Pony truss bridge over Morrison Creek on CR 75 North
Open to traffic

Morrison Creek Bridge (Sullivan County, Indiana)
Built ca. 1935
Concrete stringer bridge over Morrison Creek on CR 50 N
Open to traffic

Morrison-Bryan Road Bridge (Tehama County, California)
Built 1910
Lost Warren pony truss bridge over Burris Creek on Morrison-Bryan Road
Removed but not replaced

Morton Bridge (Ray County, Missouri)
Built 1889 by the Wrought Iron Bridge Co.
Through truss bridge over Crooked River on Landing Road
Open to traffic with 3 Ton Weight Limit

Morton- Minnesota River Crossing (Redwood County, Minnesota)
Built 1928; Replaced in 1997- road realigned at the same time.
Lost Parker through truss bridge over Minnesota River on Hwys. US 71 and MN 19
Replaced by new bridge

Mortonville Bridge (Chester County, Pennsylvania)
Built 1826. Reconstructed 2009.
Stone arch bridge over West Branch Brandywine Creek on Strasburg Road
Open to traffic. Reconstructed as a wider bridge, retaining the stone.

Mosby Creek Covered Bridge 37-20-27 (Lane County, Oregon)
Built in 1920. Restored in 1990.
Covered Howe through truss bridge on Mosby Creek Road
Open to traffic

Moser Road Bridge (Somerset County, Pennsylvania)
Built 1900
Pinned Pratt Thru Truss bridge over Casselman River on TR 353 (Moser Road)
Open to traffic

Mosquito Creek Bridge (Dallas County, Iowa)
Built ca. 1880; closed 2009
Through truss bridge over Mosquito Creek on 255th Street
Intact but closed to all traffic

Mosquito Creek Bridge (Nemaha County, Kansas)
Built pre 1900.
Pratt pony truss bridge over an Mosquito Creek, 1.0 mi. south and 1.0 mi. west of Wetmore
Derelict/abandoned

Mosquito Road Bridge (El Dorado County, California)
Built 1939
Suspension bridge over South Fork American River on Mosquito Road
Open to traffic

Moss Creek CR 508 Bridge (Carroll County, Missouri)
Built 1913
Pony truss bridge over Moss Creek on CR 508
Intact but closed to all traffic

Moss Creek Ditch Bridge (Carroll County, Missouri)
Built ca. 1930
Steel stringer bridge over Moss Creek Ditch on CR 508A
Closed to all traffic

Moss Creek Ditch CR 503 No. 1 Bridge (Carroll County, Missouri)
Built ca. 1930
Pony truss bridge over Moss Creek Ditch on CR 503
Open to traffic

Moss Creek Ditch CR 503 No. 2 Bridge (Carroll County, Missouri)
Built ca. 1930
Pony truss bridge over Moss Creek Ditch on CR 503
Open to traffic

Mosside Boulevard Bridge (Allegheny County, Pennsylvania)
Built 1930; rehabilitated 1972; replaced 2007
Lost cantilevered through girder bridge over Turtle Creek on Mosside Blvd.
Replaced by a new bridge

Mosside Boulevard Bridge Approach (Allegheny County, Pennsylvania)
Built 1930; replaced 2007
Lost Deck girder bridge over Service Road on Mosside Blvd.
Replaced by a new bridge

Mossy Creek Route 613 Bridge (Augusta County, Virginia)
Built 1910
Pony truss bridge over Mossy Creek on Route 613
Open to traffic

Mostoller Bridge (Somerset County, Pennsylvania)
Built 1937; rehabilitated 1949; replaced 2014
Lost Steel stringer bridge over Stonycreek River on Pompey Hill Road (SR 1008)
Replaced by a new bridge

Motley Slough Bridge (Lowndes County, Mississippi)
Built or relocated here 1925
Pony truss bridge over Slough Creek on Schaffer Chapel Road
Open to traffic

Mound Branch MO 52 Bridge (Bates County, Missouri)
Built 1928; demolished April 2010
Pony truss bridge over Mound Branch on MO 52
Demolished April 2010 to make room for US 71/MO 52 Interchange

Mound Creek CR 420 Bridge (Livingston County, Missouri)
Built ca. 1930
Pony truss bridge over Mound Creek on CR 420
Open to traffic

Mound Road Bridge (Shelby County, Indiana)
Built in 1910 by the Lafayette Engineering Company
Pratt through truss bridge over Flatrock River on Mound Road
Intact but closed to all traffic

Mount Jackson Road Bridge (Lawrence County, Pennsylvania)
Built 1924; replaced 2001
Lost Pratt through truss bridge over Mahoning River on Mount Jackson Road (PA 108)
Replaced by a new bridge

Mount Si Road Bridge (King County, Washington)
Built 1904; rehabilitated 1955, Replaced 2008-09
Through truss bridge over Middle Fork Snoqualmie River on Mount Si Road in Tanner
Replaced by a NEW THROUGH TRUSS bridge in 2008

Mountain Creek Bridge (Cumberland County, Pennsylvania)
Built 1920
Steel stringer bridge over Mountain Creek on Ladnor Road, T-575
Open to traffic

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

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 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 (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 (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 CR 304 Bridge (Daviess County, Missouri)
Built ca. 1910, probably by the Dildine Bridge Co.
Pony truss bridge over Muddy Creek on CR 304
Open to traffic

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

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

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