There are 9,308 bridges in this category · Only showing 7,320 bridges with photos
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Pratt truss
The Pratt truss is named after Thomas and Caleb Pratt, Boston railroad engineers who patented the design in 1844. The Pratt and its variations are the most common design of metal truss bridges.
On a basic Pratt truss, the diagonals slope toward the center of the bridge, do not cross any verticals, and are approximately parallel. The top chord is straight and parallels the lower chord. The panels can have sub-divisions - or verticals and diagonals that don't reach from the top to bottom chord, though this can be considered a variation of the basic type.
There are many variations, or sub-types of the Pratt truss, some of which have their own name including
Parker,
camelback,
Pennsylvania,
Baltimore, and others.
It is used in bridges as a through truss, pony truss, and deck truss.
MNCW - Main/Washington Street Overpass (Fairfield County, Connecticut)
Built in 1895 by the Berlin Iron Bridge CompanyPratt through truss bridge with vertical endposts and a 45° skew over Main/Washinton Streets on MetroNorth RR
MO 53 Viaduct (Butler County, Missouri)
Replaced 1990Lost Pratt through truss bridge over Missouri Pacific Railroad on MO 53Replaced by new bridge
MO 8 Dry Fork Truss (Phelps County, Missouri)
Built c1900Lost Pratt through truss bridge over Dry Fork Creek on MO 8 and MO 68Replaced by a new bridge
MO&G - Neosho River Bridge (Ottawa County, Oklahoma)
Built by the Missouri, Oklahoma & Gulf Railway, now abandoned with track removed but superstructure remainsAbandoned through truss bridge over Neosho River on Missouri, Oklahoma & Gulf (later KOG) RailwayLine abandoned in 1962
Mock Bridge (Schuyler County, Missouri)
Built 1904Through truss bridge over Chariton River on Scenic Drive (CR 2)Converted to a pedestrian bridge
Moeller road Bridge (Wichita County, Texas)
Abandoned pratt pony truss bridge over China Creek on Moeller RdAbandoned
Moffett Mill Bridge (Beaver County, Pennsylvania)
Built 1929Lost through truss bridge over Raccoon Creek on Moffet Mill RoadReplaced by a new bridge
Mohawk Dam Bridge (Coshocton County, Ohio)
Built 1937Pratt deck truss bridge on Utility path to dam
Mohican River Bridge (Ashland County, Ohio)
Abandoned pratt pony truss bridge over Mohican River on an old alignment of OH 95Derelict/abandoned
Mojave River Bridge (San Bernardino County, California)
Built ca. 1888; Converted to road ca. 1907; Replaced 1941 and relocated to Central AmericaPratt through truss bridge over Mojave River on Dagget-Yermo RoadReplaced by a new bridge, relocated to Central America
Mollies Rock Road Bridge (Muskingum County, Ohio)
Built 1914 by C.W. Lane; probably replaced 1981Lost through truss bridge over Symmes Creek on Nollies Rock Road (CR 40)Open to traffic
Mollys Run Bridge (Jefferson County, Indiana)
Built 1905Pony truss bridge over Mollys Run on Brooksburg Manville Road (CR 260N)Removed and replaced
MON - Tippecanoe River Bridge (White County, Indiana)
Built ca. 1895, demolished ca. 1986Lost Deck truss bridge over Tippecanoe River and access roads on former Monon Railroad in MonticelloLost
MON - Wabash River Bridge (Delphi, Old) (Carroll County, Indiana)
Built 1897, replaced in 1949Lost Through truss bridge over Wabash River on former Monon Railroad in DelphiReplaced by a new bridge
Monegaw Creek NW 1001 Bridge (St. Clair County, Missouri)
Built ca. 1910 by the Standard Bridge Co.; replaced 2013Lost pony truss bridge over Monegaw Creek on CR NW 1001Replaced by a new bridge
Monett Business US 60 Bridge (Barry County, Missouri)
Built 1935; replaced 2017Lost through truss bridge over BNSF RR on Business US 60 east of MonettReplaced by a new bridge
Money Creek Bridge (McLean County, Illinois)
Built 1891 by the King Bridge CompanyLost Bedstead Pratt pony truss bridge over Money Creek on Old Cr 2500 EastRemoved but not replaced
Moniteau Church Road Bridge (Moniteau County, Missouri)
Built ca. 1930; replaced 2014Lost pony truss bridge over Howard Creek on Moniteau Church Road southwest of JamestownReplaced by a new bridge
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 1967Through truss bridge over Moniteau Creek on Moniteau Creek Road (Old MO 179)Demolished at the end of 2019.
Monitor Road Bridge (Hall County, Nebraska)
Built ca. 1935Pony truss bridge over Prairie Creek on Monitor RoadOpen to traffic
Monkey Jack Bridge (Henry County, Indiana)
Built in 1910, closed in 1970'sPony truss bridge over Big Blue River on CR 225 WestClosed to all traffic with deck missing
Monocacy River Bridge (Frederick County, Maryland)
Built 1932Through truss bridge over Monocacy River on MD 77Open to traffic
Monon Trail - Fall Creek Bridge (Marion County, Indiana)
(Main design: Double-intersection Warren through truss)Through truss bridge over Fall Creek on Monon Trail (former Monon Railroad) in IndianapolisOpen to pedestrians
Monroe Bridge (Lincoln County, Missouri)
Lost through truss bridge over West Fork Cuivre River on Fairview Church Road northeast of TruxtonReplaced by a new bridge
Monroe Road Bridge (Clinton County, Michigan)
Built 1894; replaced in 2001 and dismantled for reuseDismantled through truss bridge over Looking Glass River on Monroe RoadReplaced by a new bridge and dismantled for reuse
Monroe Street Bridge (Cook County, Illinois)
Built 1919Bascule bridge over South Branch Chicago River on W. Monroe Street in ChicagoOpen to traffic
Monroe Street Bridge (Second) (Spokane County, Washington)
Built 1892; Replaced 1911Lost Pratt deck truss bridge over Spokane River on Monroe StreetReplaced by a new bridge
Monticello Bridge (Wright County, Minnesota)
(Main design: Pennsylvania through truss)Built 1891; Replaced in 1930Lost Through truss bridge over Mississippi River on Minnesota Highway 25Replaced by a new bridge
Montlake Bridge (King County, Washington)
Built 1925; rehabilitated 1999Bascule bridge over Montlake Cut on WA 513 in SeattleOpen to traffic
Montopolis Bridge (Older) (Travis County, Texas)
Built 1889Lost Pratt through truss bridge over Colorado River on State 111Destroyed by flooding
Montour Park Road Bridge (Allegheny County, Pennsylvania)
Pratt pony truss bridge over Montour Run on Montour Park Road (abandoned)
Moody Bridge (Pickens County, South Carolina)
Lost Pratt through truss bridge over South Saluda River on Moody Bridge RoadReplaced by a new bridge
Moody Ford Bridge (Barton County, Missouri)
Built 1884 by the Missouri Valley Bridge & Iron Co.; replaced 1998; relocated to private property in Nov. 1999Through truss bridge formerly over North Fork Spring River on SW 60th Road (CR 432)Open to traffic on a private lane
Moon Creek Bridge (Custer County, Montana)
Pratt pony truss bridge over Moon Creek on unnamed roadOpen to traffic
Moon Creek Bridge (Livingston County, Illinois)
Built 1891Abandoned Pratt pony truss bridge over Moon CreekDerelict/abandoned
Moon Road Bridge (Monroe County, Indiana)
Built in 1915; replaced in 1986Lost Pratt through truss bridge over Bean Blossom Creek on Moon RoadReplaced by new bridge
Moore Bridge (Knox County, Missouri)
Built 1909 by John MoorePony truss bridge over North Fork South Fabius River on CR 24Open to traffic
Moore Ford Bridge (Putnam County, Indiana)
Built 1908; Replaced 2003Lost pony truss bridge over Little Deer Creek on Devil Backbone RoadReplaced
Moore Lake Bridge (Leflore County, Mississippi)
Built 1916Abandoned Pratt through truss bridge over Moore Lake on CR 73Bypassed by a new bridge built in 1995
Moore Road Bridge (Bedford County, Tennessee)
Built 1902; moved 1914, 1952; replaced 1984Lost Pratt through truss bridge over North Fork Creek on Moore RoadReplaced by new bridge
Moore's Crossing Bridge (Travis County, Texas)
(Main design: Whipple through truss)Three 1884 Whipple through truss spans relocated here and installed by the Austin Bridge Company along with a new pony truss approach span in 1922; Closed to vehicular traffic in 1980Through truss bridge over Onion Creek on Moores Bridge RdOpen to pedestrians
Moore's Ford Bridge (Jones County, Iowa)
Built 1884 by Morse Bridge Company, Removed betwixt 2002 aerial imagery and the 2004 aerial imageryLost Pratt through truss bridge over White Water Creek on 25th AvenueDemolished - Removed but not replaced
Moores Creek Bridge (Chambers County, Alabama)
Built 1910Pratt through truss bridge over Moores Creek on 19th Avenue in ValleyClosed
Moots Creek Bridge (White County, Indiana)
Built ca.1925 on a state highway; moved to this location in 1963 and replaced in 2003.Lost through truss bridge over Moots Creek on CR 100 EastNo longer exits
Mora River Bridge (Mora County, New Mexico)
Built 1914: replaced 1934Lost Pratt through truss bridge over Mora River on NM-161Replaced by a new bridge
Morehead Bridge (Jackson County, Iowa)
Built or relocated 1982Through truss bridge over South Fork Maquoketa River on 74th StreetOpen to traffic
Morenci Southern - Loop #1 (Greenlee County, Arizona)
(Main design: Timber stringer)Built 1902; Removed 1922Lost Timber stringer bridge over Morenci Southern Railroad on Morenci Southern RailroadRemoved
Morgan Bridge (Madison County, Iowa)
Built 1891 by local contractor using King Iron Bridge Co. superstructure; originally carried local road over Branch of Clanton CreekPratt pony truss bridgeOpen to pedestrians only
Morgan Ford Bridge (Henry County, Virginia)
Constructed 1953 from parts from older bridges. The center Pratt through truss span was built in 1887.Through truss bridge over Smith River on Morgan Ford Rd (Route 622) in Sandy LevelOpen to traffic
Morgan Road Bridge (Allen County, Indiana)
Built ca. 1895Lost Pratt pony truss bridge over Flatrock Creek on Morgan Road-SouthReplaced by a new bridge
Morganville Bridge (Clay County, Kansas)
Built 1927Lost through truss bridge over Republican River, 0.5 mi. south and 1.3 mi. west of MorganvilleLost
Morganville Bridge (Older) (Clay County, Kansas)
Built ca. 1880'sLost Pratt through truss bridge over Republican River on Former RoadNo longer exists
Mormon Island Bridge (Sacramento County, California)
(Main design: Parker through truss)Built 1908; Inundated ca. 1955Parker through truss bridge over South Fork American River on RoadInundated
Morrison Street Bridge (1888) (Multnomah County, Oregon)
Built 1888; Replaced 1905Lost Pratt through truss bridge over Willamette river on Morrison streetReplaced by a new bridge
Morristown Pike Bridge (Hancock County, Indiana)
(Main design: Pratt through truss)Built in 1887 and replaced in 1987.Lost Pratt through truss bridge over Blue River on County Road 575 EastReplaced by a new bridge
Morse Mill Bridge (Jefferson County, Missouri)
Built 1886-87 by the St. Louis Bridge & Iron Co.Pratt through truss bridge over Big River at Morse MillOpen to pedestrians only
Morseville Bridge (Saginaw County, Michigan)
Built in 1885 by the Smith Bridge Company; bypassed in 2006Pratt 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 RoadOpen to traffic with 3 Ton Weight Limit
Moscow Bridge (Muscatine County, Iowa)
Built 1885; Removed 1942Lost Pratt through truss bridge over Cedar River on River StreetRemoved
Moscow Mills Bridge (Lincoln County, Missouri)
Built 1885 by Raymond and CampbellAbandoned through truss bridge over the Cuivre River at Moscow MillsClosed to all traffic
Moselem Springs Bridge (Berks County, Pennsylvania)
Built 1905; rehabilitated 1975Pratt pony truss bridge over Moselem Creek on Eagle RoadOpen to traffic
Mosemann Bridge (Johnson County, Iowa)
Built 1904; Removed 1959Lost Pratt through truss bridge over Iowa River on Scales Bend RoadRemoved
Moser Road Bridge (Somerset County, Pennsylvania)
Built 1900Pinned Pratt Thru Truss bridge over Casselman River on TR 353 (Moser Road)Open to 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 WetmoreDerelict/abandoned
Mosquito Creek Bridge (Christian County, Illinois)
Built 1893Through truss bridge over Mosquito Creek on Meridian Avenue/CR 2100E (TR 16), 6 mi. east of Mt.AuburnDerelict/abandoned
Mosquito Creek Bridge (Dallas County, Iowa)
Built ca. 1880; closed 2009Through truss bridge over Mosquito Creek on 255th StreetIntact but closed to all traffic
Moss Creek CR 508 Bridge (Carroll County, Missouri)
Built 1913Pony truss bridge over Moss Creek on CR 508Intact but closed to all traffic
Mossdale Bridge (1917) (San Joaquin County, California)
Built 1917; Replaced 1926Lost Pratt through truss bridge over San Joaquin River on RoadReplaced by a new bridge
Mother Neff Leon River Bridge (Coryell County, Texas)
Abandoned pratt through truss bridge over Leon River near old road alignmentDerelict/abandoned
Motley Slough Bridge (Lowndes County, Mississippi)
Built or relocated here 1925Pony truss bridge over Slough Creek on Schaffer Chapel RoadOpen to traffic
Motor Mill Bridge (1899) (Clayton County, Iowa)
Built 1899, One span destroyed by flooding in 1991, the other in 2008. Replica spans installed in late 2012Pratt through truss bridge over Turkey River on Galaxy RoadDestroyed by flooding in 2008; replica spans now in place and open to traffic
Mott Street Bridge (Pike County, Pennsylvania)
Built 1902 by Penn Bridge Co.Pratt through truss bridge over Sawkill Creek on Mott Street in MilfordOpen to pedestrians only
Motts Road Bridge (Harrison County, Indiana)
Built ca. 1900Lost Pratt through truss bridge over Indian Creek on Motts RoadReplaced by a new bridge
Mound Creek CR 420 Bridge (Livingston County, Missouri)
Built ca. 1930Pony truss bridge over Mound Creek on CR 420Open to traffic
Mound Road Bridge (Shelby County, Indiana)
Built in 1910 by the Lafayette Engineering CompanyPratt through truss bridge over Flatrock River on Mound RoadIntact but closed to all traffic
Mount Jackson Road Bridge (Lawrence County, Pennsylvania)
Built 1924; replaced 2001Lost 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 1997Three-span through truss bridge over Middle River on former Route 769Closed to all traffic with only the center span remaining
Mount Moriah Road Bridge (Cooper County, Missouri)
Built 1913 by Kansas City Bridge Co.; replaced 2003-04Lost through truss bridge over Lamine River on Mount Moriah Road near Clifton CityReplaced by a modern concrete bridge
Mountain Fork River CR 38 Bridge (Polk County, Arkansas)
Built 1905Two-span pony truss bridge over Mountain Fork River on CR 38 near PotterOpen to one lane traffic
Mountain Glen Bridge (Union County, Illinois)
Lost pony truss bridge over a branch of Clear Creek near Mountain GlenReplaced by a new bridge
Mountain Road Bridge (Sussex County, New Jersey)
Built 1893Through truss bridge over Flat Brook on Mountain RoadOpen to traffic
Mountville Road Bridge (Lawrence County, Pennsylvania)
Built 1940Through truss bridge over Slippery Rock Creek on Mountville RoadOpen to traffic
Mourey Ditch Bridge (Allen County, Indiana)
Built ca. 1895Lost Half-hip Pratt pony truss bridge over Mourey Ditch on Moore RoadReplaced by a new bridge
MP - Black River Bridge (Old) (Independence County, Arkansas)
Pratt through truss bridge over Black River on Missouri Pacific RailroadReplaced by a new bridge
MP - Castor River Diversion Channel Bridge (Cape Girardeau County, Missouri)
Built 1918 by the Bethlehem Steel Bridge Corp.Pratt through truss railroad bridge over Diversion Channel on Missouri Pacific RailroadNo longer in use
MP - Gage Junction Swing Bridge (Randolph County, Illinois)
Built 1903 ; replaced 1975Pratt through truss swing bridge over Kaskaskia River on Missouri Pacific RailroadDestroyed by derailment
MP - Little Nemaha River Bridge (Otoe County, Nebraska)
Lost Through truss bridge over Little Nemaha River on Missouri Pacific RailroadRemoved but not replaced
MP - Ouachita River Bridge (Union County, Arkansas)
Built 1902-3; Removed ca. 1973Lost Bridge over Ouachita River on Missouri Pacific RailroadRemoved
MPA - Deer Creek bridge (Harford County, Maryland)
Lost Through truss bridge over Deer Creek and Rocks Rd on Maryland & Pennsylvania RRRemoved but not replaced
MPLI - Minnesota River Bridge (Redwood County, Minnesota)
Built 1896Pratt through truss bridge over Minnesota River on Twin Cities and Western RailroadOpen to traffic
MRL - Bitterroot River Bridge #1 (Missoula County, Montana)
Built at various times using secondhand spansPratt through truss bridge over Bitterroot River on Montana Rail LinkOpen to traffic
MRL - Blackfoot River Bridge (Missoula County, Montana)
Built 1908Pratt through truss bridge over Blackfoot River on Montana Rail LinkOpen to traffic
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