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.
Mill Creek Bridge (Putnam County, Indiana)
Built 1925; rehabilitated 1985Pony truss bridge over Mill Creek on CR 450 SouthOpen to traffic
Mill Creek Bridge (Jackson County, West Virginia)
Built 1922Through truss bridge over Mill Creek on CR 25Open to traffic
Mill Creek Bridge (Jackson County, West Virginia)
Built 1926Through truss bridge over Mill Creek on WV 87Replaced by a new bridge
Mill Creek Bridge (Bourbon County, Kansas)
Abandoned Pratt through truss bridge over Mill Creek in Fort ScottCollapsed
Mill Creek Bridge (Owen County, Indiana)
(Main design: Pratt through truss)Built in 1885 by the Wrought Iron Bridge Company with pony truss added ca.1910; replaced in 1989Lost Pratt through truss bridge over Mill Creek on CR 1150N
Mill Creek Bridge (Adams County, Illinois)
Built 1894; replaced 1982Lost Pratt through truss bridge over Mill Creek on Herleman Road (TR 76)Replaced by new bridge
Mill Creek Bridge (Cherokee County, Iowa)
Built 1917Through truss bridge over Mill Creek on L AvenueOpen to traffic
Mill Creek Bridge (Cedar County, Iowa)
Built 1889; Abandoned mid 1970's; Failed relocation to Lowden in 1996; Relocated 2020Abandoned pratt pony truss bridge over Mill Creek On Plum AvenueRemoved and relocated to Whitetails Saloon
Mill Creek Bridge (Jackson County, Illinois)
Abandoned pony truss bridge over Mill Creek on Jacobini Road (Forest Road 377)Wrecked following a flash flood
Mill Creek Bridge (Rock Island County, Illinois)
Lost Pratt through truss bridge over Mill Creek on RoadReplaced by a new bridge
Mill Creek CR 321 Bridge (Holt County, Missouri)
Built ca. 1920Pony truss bridge over Mill Creek on CR 321Open to traffic
Mill Creek Road Bridge (Lehigh County, Pennsylvania)
Built 1876; Replaced 1975Lost Pratt pony truss bridge over Jordan Creek on Mill Creek Road (SR 4009)Replaced by new bridge
Mill Creek, Naans Branch (Owen County, Indiana)
Built c. 1905; Replaced in 1989Lost Pratt Pony TrussReplaced by a new bridge
Mill Creek-Fox Road Bridge (Washington County, Kansas)
Built ca. 1910Pony truss bridge over Mill Creek on G-10.5 81, 0.5 mi. north and 2.5 mi. east of HaddamOpen to traffic
Mill Grove Bridge (Owen County, Indiana)
(Main design: Pratt through truss)Rehabilitated 2005Through truss bridge over Mill Creek on CR 100 East (Tower Road)Open to traffic
Mill Grove Road Bridge (Stephenson County, Illinois)
Built 1931Pony truss bridge over Yellow Creek on S. Mill Grove Road, 3 mi. southeast of Pearl CityOpen to traffic
Mill Mountain Road Bridge (Luzerne County, Pennsylvania)
Built 1883 by the Penn Bridge Co.; rehabilitated 2011; Replaced and stored 2021.Pratt pony truss bridge over Nescopeck Creek on Mill Mountain Road (TR 356)Currently being replaced and placed in storage for reuse.
Mill Road Bridge (Vanderburgh County, Indiana)
Built ca.1875 by the Columbia Bridge WorksLost Pratt pony truss bridge over Little Creek on Mill Road (old alignment)Replaced by a new bridge and road later realigned.
Mill Road Bridge (Livingston County, New York)
Former State Route 39 Bridge before highway rerouted to the east.Pratt pony truss bridge over Little Conesus Creek on Wadsworth Park TrailOpen to pedestrians
Mill Road Bridge (Hunterdon County, New Jersey)
Built 1900; rehabilitated 2005Pony truss bridge over Rockaway Creek on Mill RoadOpen to traffic
Mill Road Bridge (Schenectady County, New York)
Relocated ca. 1983 from Parish, NYPratt pony truss bridge over Unnamed brook on Pedestrian PathOpen to pedestrians only
Mill Road Bridge in Evansburg State Park (Montgomery County, Pennsylvania)
Built ca. 1895; rehabilitated ca. 1985Pony truss bridge over Skippack Creek on PA 4005 (Mill Road) in Evansburg State ParkOpen to traffic
Mill Rock Bridge (Jackson County, Iowa)
Built 1913; Replaced 1995Lost Pratt through truss bridge over Big Bear Creek on 33rd Avenue in Monmouth TownshipReplaced by new bridge
Mill Shoals Bridge (White County, Illinois)
Through truss bridge over Skillet Fork west of Mill Shoals on CR 2500 (FAS 878), 0.5 mi. west of Mill ShoalsClosed to all traffic
Mill Stream Bridge (Schenectady County, New York)
Lost circa 1930Lost through truss bridgeDemolished
Mill Street (Rat River) Bridge (Forest County, Wisconsin)
Pinned Pratt pony truss bridge over Rat River on Private industrial roadOpen to private traffic
Mill Street Bridge (Tama County, Iowa)
Built 1911; Replaced 2013Through truss bridge over Wolf Creek on Mill Street in TraerReplaced by a new bridge
Mill Street Bridge (Miami County, Kansas)
Built ca. 1920, Demolished Ca. 2017.Through truss bridge over Marias Des Cygnes River on 347th Street, 1.3 mi. east of OsawatomieLost
Millard's Bridge (Hamilton County, Iowa)
Built ?; Replaced 1923Lost Pratt through truss bridge over Boone River on Webster City RFD No. 6Replaced by a new bridge
Millbrook Bridge (Kendall County, Illinois)
Built 1897. Bypassed by a new bridge in 1984; closed to pedestrians 2015; demolished 2020Pratt through truss bridge over Fox River on former alignment of Whitfield RoadDemolished on 24-25 August, 2020
Miller Bridge (Butler County, Missouri)
Built 1902 by the Interstate Bridge Co.; replaced 1998Lost through truss bridge over Cane Creek on CR 448 west of Poplar BluffReplaced by a concrete span
Miller Bridge (Madison County, Iowa)
Relocated Pratt pony truss sitting on dry landOpen to pedestrians
Miller Creek Bridge (Alexander County, Illinois)
Built 1933Pony truss bridge over Miller Creek on Old Illinois Route 3 northeast of Thebes, 1 mi. north of ThebesOpen to two-lane traffic
Miller Farm Bridge (Venango County, Pennsylvania)
Built 1888 by Massillon Bridge Co.Through truss bridge over Oil Creek on TR 635 (Miller Farm Road)Open to traffic
Miller's Grove Bridge (Richland County, Wisconsin)
Lost Pratt through truss over Pine River on Seminary Street.Replaced by a new bridge
Millersville Bridge (Cape Girardeau County, Missouri)
Opened to traffic Oct. 5, 1924; rehabilitated 1975; replaced Fall 2009Lost two-span through truss bridge over Whitewater River on MO 72 at MillersvilleNo longer exists
Millport Route M Bridge (Knox County, Missouri)
Built 1954 to replace the collapsed Millport Covered Bridge; replaced 2012Lost pony truss on Route M near Millport over Middle Fork Fabius RiverReplaced by a new bridge
Mills Mills Road Bridge (Allegany County, New York)
Lost Pratt through truss bridge on Mills Mills RoadReplaced by a new bridge
MILW - Adel Bridge (Old) (Dallas County, Iowa)
Built ?; Replaced 1943 with a pair of relocated spansLost Pratt through truss bridge over North Raccoon River on Chicago, Milwaukee, St. Paul & Pacific RailroadReplaced by a new bridge
MILW - Cedar River Bridge (Mower County, Minnesota)
Built 1886, Relocated Here 1911; To become a trailAbandoned pratt through truss bridge over Cedar River on abandoned Milwaukee Road railroadAbandoned
MILW - Cedar River Bridge #1 (King County, Washington)
Built 1907-1909Through truss bridge over Cedar River on Private RoadOpen to Seattle Public Utilities only
MILW - Cheyenne River Bridge (Pennington County, South Dakota)
Built 1907Pratt through truss bridge over Cheyenne River on Former CMStP&P RailroadIntact but closed to all traffic
MILW - Granger High Bridge (Dallas County, Iowa)
Built 1881, Trestle work done 1893, Removed 1944Pratt deck truss bridge over Des Moines River on Railroad (MILW)Removed
MILW - Indian Creek Bridge (Old) (Linn County, Iowa)
Built ?; Replaced 1915Lost Pratt deck truss bridge over Indian Creek on Chicago, Milwaukee, St. Paul & Pacific RailroadReplaced by a new bridge
MILW - Maple River Bridge (Blue Earth County, Minnesota)
Built 1897, Relocated Here in 1910Abandoned pratt through truss bridge over Maple River on Abandoned Milwaukee Road RailroadDerelict/abandoned, possibly on private property
MILW - Mendota Swing Bridge (Hennepin County, Minnesota)
(Main design: Warren through truss)Approach Spans built 1894, swing span built 1900; Removed 1957Lost Warren through truss bridge over Minnesota River on Former Milwaukee RoadRemoved but not replaced
MILW - Millrace Bridge (Wapello County, Iowa)
Built 1894; Removed ca. 1937 when the millrace was being filled in.Lost Pratt through truss bridge over Millrace on Chicago, Milwaukee, St. Paul & Pacific RailroadRemoved
MILW - North Skunk River Bridge (Keokuk County, Iowa)
Line abandoned 1979, bridge removed shortly thereafterLost Pratt through truss bridge over North Skunk River on former Milwaukee RoadDemolished
MILW - Preston Bridge (Fillmore County, Minnesota)
Lost Pratt through truss bridge over South Branch Root River on Chicago, Milwaukee, St. Paul & Pacific RailroadRemoved but not replaced
MILW - Rock River Bridge (Old) (Ogle County, Illinois)
Built 1897, Replaced 1910Lost Pratt through truss bridge over Rock River on Former Chicago, Milwaukee St. Paul & Pacific RailwayReplaced by a new bridge
MILW - Sabula Bridge (Old) (Jackson County, Iowa)
Built 1881; Replaced 1906Lost Pratt through truss bridge over Mississippi River on Chicago, Milwaukee, St. Paul & Pacific RailroadReplaced by a new bridge
MILW - Skunk River Bridge (1907) (Story County, Iowa)
Built 1907, Replaced 1912Lost Pony truss bridge over South Skunk River on Railroad (MILW)Replaced by a new bridge
MILW - Trent Bridge (Moody County, South Dakota)
Lost Pratt pony truss bridge over Big Sioux River on abandoned railroadRemoved but not replaced
MILW - Upper Iowa River Bridge (Old) (Allamakee County, Iowa)
Replaced 1986Lost Pratt through truss bridge over Upper Iowa River on Chicago, Milwaukee, St. Paul & Pacific RailroadReplaced by a new bridge
MILW - Wapsipinicon River Bridge (DeWitt) (Scott County, Iowa)
Built 1910; Abandoned & Removed 1931Pratt through truss bridge over Wapsipinicon River on Chicago, Milwaukee, St. Paul & Pacific RailroadRemoved
MILW - Wisconsin River Bridge (Marathon County, Wisconsin)
Built 1894; Replaced 1980Lost Pratt through truss bridge over Lake Du Bay (Wisconsin River) on Railroad (MILW) and SR 34Replaced by a new bridge
Milwaukee Avenue Viaduct (Old) (Cook County, Illinois)
(Main design: Through truss)Built 1873; replaced 1914Lost Through truss bridge over Chicago, Milwaukee & St. Paul Railroad on Milwaukee AvenueReplaced by a new bridge
Mine Road Bridge (Mercer County, New Jersey)
Built 1885; rehabilitated 1976; rehabilitated ~2011,portal damaged by falling tree in 2017 - closed sinceThrough truss bridge over Stony Brook on Mine RoadIntact but closed to all traffic
Mineola Bridge (Montgomery County, Missouri)
Probably replaced 1925 by a new truss bridge (also since replaced) on US 40Lost through truss bridge over Loutre River at MineolaReplaced by new bridge
Miner Street Bridge (Clear Creek County, Colorado)
Built 1902 by Kuyes and Work. Reconstructed 1990 (the trusses are no longer load-bearing).Reconstructed pony truss bridge over Clear Creek on Miner Street in Idaho SpringsOpen to traffic
Mineral Creek Bridge (Allamakee County, Iowa)
Built 1915Pony truss bridge over Mineral Creek on Mineral Creek DriveReplaced by a new bridge
Mineral Springs Rd.-PA RR Underpass (Wayne County, Indiana)
Built ca. 1910Lost Pratt deck truss bridge over Pennsylvania Railroad on Mineral Springs RoadRemoved and filled to street level
Minerva Creek Bridge (Marshall County, Iowa)
Built ca. 1920Through truss bridge over Minerva Creek on Jessup AvenueOpen to traffic
Minnesota Valley State Trail - Chaska Swing Bridge (Carver County, Minnesota)
Built 1900, Approach Replaced 1905 and again in 1911; Imploded August 1996 due to sinking pierLost Pratt through truss bridge over Minnesota River on Chaska-Shakopee TrailRemoved
Miscauno Island Bridge (E) (Marinette County, Wisconsin)
Built 1905Pratt through truss bridge over Menominee River on Miscauno Island LaneOpen to traffic
Miscauno Island Bridge (Middle) (Marinette County, Wisconsin)
Built 1905Pratt through truss bridge over Menominee River on Miscauno Island LaneOpen to traffic
Miscauno Island Bridge (W) (Marinette County, Wisconsin)
Built 1905Pratt through truss bridge over Menominee River on Miscauno Island LaneOpen to traffic
Mission Creek Bridge (Brown County, Kansas)
Built 1905Lost Bedstead pony truss bridge over Mission Creek in HortonLost
Mission Creek Bridge (Wabaunsee County, Kansas)
Built ca. 1920Bypassed pony truss bridge over Mission Creek, 7.0 mi. east and 6.5 mi. north of EskridgeOpen to pedestrians only
Mission Creek Bridge (Osage County, Oklahoma)
Built 1928Through truss bridge over Mission Creek on D0079Open to traffic
Mission Creek Bridge (Pawnee County, Nebraska)
Built ca. 1935Pony truss bridge over Mission Creek on 607 Avenue, 5 mi. west and 8.6 mi. south of BurchardOpen to traffic
Mission Creek-Carlson Rd. Bridge (Shawnee County, Kansas)
Built ca. 1910; Replaced 2015Through truss bridge over Mission Creek on Carlson RoadReplaced by a new bridge
Missisquoi Valley Rail Trail - Berkshire Bridge (Franklin County, Vermont)
Built 1900 by American Bridge Co.; Inactive 1984-1988; Abandoned 1992; Converted to rail-trail use in 1994Pin connected Pratt through truss bridge over Missisquoi River on Missisquoi Valley Rail TrailOpen to pedestrians only
Missisquoi Valley Rail Trail - Sheldon Junction Bridge (Franklin County, Vermont)
Built 1900 by American Bridge Co.; One span destroyed 1984; Re-purposed for rail trail use in 1994Pin connected Pratt through truss bridge over Missisquoi River on Missisquoi Valley Rail TrailOpen to pedestrians only
Mississippi County Road 307 Bridge (Mississippi County, Missouri)
Built 1921Pony truss on CR 307 (Old US 60) near Birds Point over a drainage ditch emptying into Brewer LakeIntact but closed to all traffic
Mississippi County Road 308 Bridge (Mississippi County, Missouri)
Built ca. 1915 by the Vincennes Bridge Co.Lost pony truss bridge over Glory Bayou on CR 308No longer exists
Missouri Street Bridge (Washington County, Missouri)
Built ca. 1904; Reconstructed 1968Pony truss bridge over Breton Creek on Missouri Street in Potosi, just south of the courthouseOpen to traffic on a dead-end street
Mistaken Creek Bridge (Grayson County, Kentucky)
Built ca. 1920Lost Bedstead pony truss bridge over Mistaken Creek on Yeaman-Olaton RoadReplaced by a new bridge
Mitchell Creek Bridge (Frontier County, Nebraska)
Built 1905Pony truss bridge over Mitchell Creek on Lake Road (Road 734), 4.5 mi. south and 7.2 mi. east of StockvilleOpen to traffic
Mitchell Ford Bridge (Morgan County, Indiana)
Bridge replaced in 1974Lost Pratt through truss over East Fork White Lick Creek on Bridge StreetReplaced by a new bridge
Mitchell Road Bridge (Buchanan County, Missouri)
Built 1922; replaced 2005Lost through truss bridge over the 102 River on Mitchell Road east of St. JosephNo longer exists
Mize Bridge (Haralson County, Georgia)
Built 1897, abandoned in 1982 when new bridge just to the south was builtAbandoned Pratt through truss bridge over Tallapoosa River on old alignment of Poplar Springs RoadAbandoned
MKT - Chocktaw Creek Bridge (Grayson County, Texas)
Abandoned pratt through truss bridge over Cocktaw Creek on RailroadDerelict/abandoned
MKT - Iron Ore Creek Bridge (Grayson County, Texas)
Abandoned pratt through truss bridge over Iron Ore Creek on RailroadDerelict/abandoned
ML&T - Atchafalaya River Bridge (St. Mary Parish, Louisiana)
Built 1881; Replaced 1908Lost Pratt truss bridge over Atchafalaya River on Morgan's Louisiana & Texas Railroad & Steamship Co.Replaced by a new bridge
MN 76 - Root River Bridge (Houston County, Minnesota)
Lost Pratt through truss bridge over Root River on MN 76Replaced by a new bridge
MN250 North Branch Root River Bridge (Fillmore County, Minnesota)
Originally built 1931 in Rochester; relocated here in 1960 to replace a similar bridge that had collapsedLost Pratt through truss bridge over Root River on MN 250 north of LanesboroReplaced by a new bridge
MNA - Norfork Railroad Bridge (Baxter County, Arkansas)
(Main design: Parker through truss)Built ca. 1909Three-span through truss bridge over North Fork White River and Prospect Street on the railroad at NorforkOpen to railroad traffic
MNBR - Naheola Bridge (Choctaw County, Alabama)
Built 1934 by the Virginia Bridge & Iron Co.; Road surface removed and bridge closed to automobiles in 2000, Open to railroad trafficVertical lift bridge over Tombigbee RiverOpen to rail traffic
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