There are 18,042 bridges in this category · Only showing 7,774 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.


MN-7/CSAH-25 Overpass (Hennepin County, Minnesota)
Built 1939
Concrete deck girder bridge over MN 100 on MN 7 (CSAH 25)
Open to traffic

MN22 Minnesota River Bridge (Le Sueur County, Minnesota)
Built 1929; Replaced in 1998
Lost Camelback through truss bridge over Minnesota River on Hwy 22 in St. Peter
Replaced by new bridge

MN258 Cottonwood River Bridge (Brown County, Minnesota)
Built 1950; demolished and replaced 2012
Lost Parker through truss bridge over Cottonwood River on MN 258
Replaced by a new bridge

MO 215 Stockton Lake Bridge (Cedar County, Missouri)
Built 1966, Refurbished 2016
Steel deck girder bridge over Lake Stockton on MO 215
Open to traffic

MO 8 over Dry Fork Creek Bridge (Phelps County, Missouri)
Built 1948; rehabilitated 1985; replaced 2015
Lost steel stringer bridge over Dry Fork Creek on MO 8 and MO 68
Replaced by a new bridge

MO 96 Overpass (Jasper County, Missouri)
Built 1934; Replaced 2017
Concrete tee beam bridge over BNSF & MNA RR on MO 96 (Historic Route 66) in Carthage
Replaced by a new bridge

MO YY Middle Fork Grand River Bridge (Worth County, Missouri)
Built 1927
Pony truss bridge over Middle Fork Grand River on Route YY (formerly MO 29)
Open to traffic

MO-H Roubidoux Creek Bridge (Pulaski County, Missouri)
Built 1955
Steel stringer bridge over Roubidoux Creek on Route H
Open to traffic

MO45 Bear Creek Bridge (Platte County, Missouri)
Built 1936; replaced 2009
Lost pony plate girder bridge over Bear Creek on MO 45
Replaced by a new bridge

Modock Creek Bridge (Ottawa County, Oklahoma)
Built ca. 1930
Pony truss bridge over Modock Creek on E0125
Closed to traffic, with rubble piles at each end.

Moenkopi Wash Bridge (Coconino County, Arizona)
Built 1915
Pony truss bridge over Moenkopi Wash on BIA Route N6731
Open to traffic

Moffett Mill Bridge (Beaver County, Pennsylvania)
Built 1929
Lost through truss bridge over Raccoon Creek on Moffet Mill Road
Replaced by a new bridge

Mohawk River Barge Canal Bridge (Montgomery County, New York)
Built 1932; rehabilitated 1993
Through truss bridge over Mohawk River Barge Canal on NY 80 in Nelliston
Open to traffic

Mohee Road Bridge (Blackford County, Indiana)
Built in 1894 by the Indiana Bridge Company, replaced in 1993.
Lost Warren Cantilever Bedstead pony truss bridge over Big Lick Creek on CR 350 W (Mohee Road)
Replaced by new bridge

Mohr Road Bridge (Greene County, Pennsylvania)
Built 1903
Pony truss bridge over Muddy Creek on TR 634
Open to traffic

Mohrsville Bridge (Berks County, Pennsylvania)
Built 1937
Steel stringer bridge over Schuylkill River on Sr 4026(Lr 06031)
Open to traffic

Mokelumne River Bridge (San Joaquin County, California)
Built 1942; rehabilitated 1978
Swing bridge over Mokelumne River on CA 12
Open to traffic

Molalla River Bridge (Clackamas County, Oregon)
Built 1936, Made One-Way in 1963
Warren deck truss bridge over Molalla River on Northbound OR-99 E
Open to traffic

Mollys Run Bridge (Jefferson County, Indiana)
Built 1905
Pony truss bridge over Mollys Run on Brooksburg Manville Road (CR 260N)
Removed and replaced

Monebrake Road Bridge (Preble County, Ohio)
Built 1910 by the York Bridge Co. of York, Pa.
Warren pony truss bridge over Seven Mile Creek on Monebrake Road
In storage or disassembled

Monegaw Creek NW 1001 Bridge (St. Clair County, Missouri)
Built ca. 1910 by the Standard Bridge Co.
Pony truss bridge over Monegaw Creek on CR NW 1001
Open to traffic

Monett Business US 60 Bridge (Barry County, Missouri)
Built 1935; replaced 2017
Lost through truss bridge over BNSF RR on Business US 60 east of Monett
Replaced by a new bridge

Money Creek Bridge on Hook Lane (Fillmore County, Minnesota)
Built 1908
Warren Pony truss bridge over Money Creek on CR 192
Open to traffic

Moniteau Church Road Bridge (Moniteau County, Missouri)
Built ca. 1930
Pony truss bridge over Howard Creek on Moniteau Church Road southwest of Jamestown
Open to traffic

Moniteau Creek Road Bridge (Cole County, Missouri)
Built 1915-16 by the Kansas City Bridge Co.; made obsolete by a new bridge on MO 179 in 1967
Through truss bridge over Moniteau Creek on Moniteau Creek Road (Old MO 179)
Closed

Monitor Road Bridge (Hall County, Nebraska)
Built ca. 1935
Pony truss bridge over Prairie Creek on Monitor Road
Open to traffic

Monroe Bridge (Lincoln County, Missouri)
Lost through truss bridge over West Fork Cuivre River on Fairview Church Road northeast of Truxton
Replaced by a new bridge

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

Monterey Tippecanoe River Bridge (Pulaski County, Indiana)
Built 1948
Pony truss bridge over Tippecanoe River on CR 625 East in Monterey
Open to pedestrians only, New UCEB built on East side of this structure.

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

Moore Lake Bridge (Leflore County, Mississippi)
Built 1916
Abandoned through truss bridge over Moore Lake on CR 73
Bypassed by a new bridge built in 1995

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

Moose River Bridge (Lewis County, New York)
Built ca. 1910; rehabilitated 1959; replaced 2003
Lost through truss bridge over Moose River on Fowlersville Roa
No longer exists

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.

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

Morseville Bridge (Saginaw County, Michigan)
Built in 1885 by the Smith Bridge Company; bypassed in 2006
Pratt through truss bridge over Flint River on Burt Road (Old alignment)
Bypassed by a new bridge on a different alignment and abandoned

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

Moscow Mills Bridge (Lincoln County, Missouri)
Built 1885 by Raymond and Campbell
Abandoned through truss bridge over the Cuivre River at Moscow Mills
Closed to all traffic

Moscow Road Viaduct (Sonoma County, California)
Built 1956
Concrete stringer bridge over Hillside on Moscow 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

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

Mott Street Bridge (Pike County, Pennsylvania)
Built 1902 by Penn Bridge Co.
Through truss bridge over Sawkill Creek on TR 426 in Milford
Closed to all 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 Carmel Bridge (Wabash County, Illinois)
Built 1932; rehabilitated 1987; Replaced 2011
Through truss bridge over Wabash River on IL 15/IN 64 in Mount Carmel
Demolished and replaced with a slab of concrete.

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 Meridian Bridge (Augusta County, Virginia)
Built 1907 by the Champion Bridge Co.; Closed to all traffic in 1997
Three-span through truss bridge over Middle River on former Route 769
Closed to all traffic

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

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