There are 9,302 bridges in this category · Only showing 7,314 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.
MEC - Kennebec River Bridge (Augusta) (Kennebec County, Maine)
(Main design: Whipple through truss)Lost Bridge over Kennebec River on RailroadRemoved but not replaced; Supports still stand
Medicine Bow River Bridge (Carbon County, Wyoming)
Built 1914; rehabilitated 1972Through truss bridge over Medicine Bow River on CN6-121Open to traffic
Medicine Bow River Bridge (Carbon County, Wyoming)
Built 1915Through truss bridge over Medicine Bow River on CN6-3Open to traffic
Medicine Creek Bridge (Frontier County, Nebraska)
Built ca. 1935Pony truss bridge over Medicine Creek on CR-735, 2.7 mi. south and 3.5 mi. east of StockvilleOpen to traffic
Medicine Creek CR 284 Bridge (Mercer County, Missouri)
Built ca. 1910Abandoned through truss bridge over Medicine Creek on CR 284Derelict and abandoned
Medicine Lodge River Bridge (Barber County, Kansas)
Built ca. 1910Lost through truss bridge over Medicine Lodge River, 2.0 mi. north and 5.9 mi. west of Medicine LodgeRemoved but not replaced
Medicine River Bridge (Barber County, Kansas)
Built ca. 1910Pratt through truss bridge over Medicine River, 2.0 mi. west of Medicine LodgeReplaced by a new bridge
Medio Creek Bridge (Bee County, Texas)
Built 1897; Rehabbed 1923 and 1947; Closed 1987Pratt Through truss bridge over Medio Creek on CR 241Closed to traffic
Mehaffey Bridge (1896) (Johnson County, Iowa)
Built 1896; Removed 1959Lost Pratt through truss bridge over Iowa River on Johnson County Road YDestroyed by flooding, then demolished; Replacement bridge built 5 years later
Meiser/Globe Mills Bridge (Snyder County, Pennsylvania)
Built 1941; rehabilitated 1995 and 2011Through truss bridge over Middle Creek on PA 1007Open to traffic
Melvin Price Trail Wood River Creek Bridge (Madison County, Illinois)
6 span Pratt Pony Truss Bridge over Wood River Creek built 2001Pratt pony truss bridge over Wood River Creek on MCT Melvin Price TrailOpen to pedestrians
Memorial Bridge (Kennebec County, Maine)
Built 1949; rehabilitated 1984Deck truss bridge over Kennebec River on ME 100/US 201/US 202 in AugustaOpen to traffic
Memorial Bridge (Old) (Manistee County, Michigan)
Caught on fire 1871, replaced 1893 ,new bascule bridge built 1933Lost Pratt through truss bridge over Manistee River on US 31 MemorialReplaced by a new bridge
Memphis Road Bridge (Sullivan County, Missouri)
Built ca. 1910, probably by the Canton Bridge Co., replaced 2011Lost pony truss bridge over Yellow Creek on Memphis RoadBridge demolished, replaced by new bridge
Menefee Ford Bridge (Ralls County, Missouri)
Built 1911 by Stupp BrothersPony truss bridge over Lick Creek on Indiana Lane south of PerryOpen to traffic
Mercer Pike Bridge (Crawford County, Pennsylvania)
Built 1888; rehabilitated 1938/1944Through truss bridge over Conneaut Outlet on PA 2003Replaced by a new bridge
Mercer Street Extension Bridge (Butler County, Pennsylvania)
Pratt through truss bridge over Connoquenessing Creek on Mercer Street ExtensionIntact but closed to all traffic
Meridian Bridge (Yankton County, South Dakota)
Built 1924; rehabilitated 1953; bypassed by Discovery Bridge in 2008Vertical-lift through truss bridge over the Missouri River on US 81 at YanktonOpen to pedestrians only
Meridian Bridge (1914) (Sutter County, California)
Built 1914; Replaced 1977Lost Pratt through truss bridge over Sacramento River on CA 20 & Sacramento Northern RailwayReplaced by a new bridge
Merriam Street Bridge (Hennepin County, Minnesota)
Originally built 1887 by the King Iron Bridge Co. as a four-span truss bridge on Broadway Street; one span relocated here in 1987Relocated through truss bridge over the Mississippi River (East Channel) on Merriam Street at Nicollet Island in MinneapolisOpen to traffic
Merrick Ford Bridge (Jasper County, Missouri)
Built 1891 by the Missouri Valley Bridge & Iron Co.; replaced 1996Lost through truss bridge over Spring River on Kafir Road (CR 321)Replaced by a new bridge
Merrill Railroad Bridge (Lincoln County, Wisconsin)
Built 1914 using a relocated 1895 TrussAbandoned pratt through truss bridge over Wisconsin River on Abandoned Milwaukee RoadAbandoned
Merritt Park Bridge (Hendricks County, Indiana)
Built 1915 by the Central States Bridge Company; Replaced 1975Lost Pratt through truss bridge over White Lick Creek on Rd 200 NReplaced by new bridge
Merrow Station Bridge (Tolland County, Connecticut)
Lost Pratt pony truss bridge over Willimantic River on Merrow RoadReplaced by a new bridge
MERV - Hothers Bridge (Franklin County, Pennsylvania)
Built 1891; Abandoned 1981Abandoned pratt through truss bridge over Conococheague Creek on former Southern Pennsylvania Iron & Railroad CompanyAbandoned but privately owned
MERV - Williamson Bridge (Franklin County, Pennsylvania)
This iron truss replaced a trestle.Abandoned Through truss bridge over Back Creek on former Southern Pennsylvania Iron & Railroad CompanyAbandoned
Metacinah Creek Bridge (Grant County, Indiana)
Built ca. 1905; replaced 1996Lost pony truss bridge over Metacinah Creek on Largo RoadReplaced by new bridge
Methow River Bridge (Okanogan County, Washington)
Built 1929; rehabilitated 1950Through truss bridge over Methow River on WA 20 in WinthropOpen to traffic
Metropolis Bridge (Massac County, Illinois)
(Main design: Pennsylvania through truss)Built 1917 for the Chicago, Burlington & Quincy RR by the American Bridge Co. under the direction of engineers C. H. Cartlidge and Ralph ModjeskiSix-span through truss bridge over the Ohio River on the Canadian National Railway at MetropolisOpen to railroad traffic
Metz Road Bridge (Montgomery County, Pennsylvania)
Built 1896; rehabilitated 1960 Removed in 2007Lost Pony truss bridge over Towamencin Creek on Metz Road in Towamencin Township.Replaced by a new bridge
Miami Creek MO 52 Bridge (Bates County, Missouri)
Built 1924; replaced 2012Lost through truss bridge over Miami Creek on MO 52Replaced by a new bridge
Michael Rd Bridge (Montgomery County, Ohio)
Pratt pony truss bridge over Little Bear Creek on Michael RdOpen to traffic
Michigan Avenue Bridge (Erie County, New York)
Built 1960, rehabilitated in 1970s and 1996Vertical lift bridge over Buffalo River on Michigan Avenue in BuffaloOpen to traffic
Michigan Avenue Bridge (Cook County, Illinois)
Built 1920; repaired after freak accident 1992Bascule bridge over Main Branch Chicago River on Michigan Avenue (former US 14) in ChicagoOpen to traffic
Middle Bar Bridge (Calaveras County, California)
Built 1912Pratt through truss bridge over Mokelumne River on Middle Bar RoadOpen to traffic
Middle Bridge (Windsor County, Vermont)
Built 1877 by King Bridge Co.; Demolished 1966Lost Pratt through truss bridge over Ottauquechee River on Mountain Ave.Replaced by a new bridge
Middle Caney Creek Bridge (Chautauqua County, Kansas)
Built ca. 1910Lost Pratt through truss bridge over Middle Caney Creek on a local road, 1.0 mi. north and 1.0 mi. east of PeruRemoved but not replaced
Middle Cedar Creek Bridge (Smith County, Kansas)
Built 1900, bypassed 2000Pony truss bridge over Middle Cedar Creek, 1.0 mi. north and 1.0 mi. west of KensingtonIntact but closed to all traffic
Middle Creek Bridge (Miami County, Kansas)
Built 1907Through truss bridge over Middle Creek on 379th Street, 1.5 mi. south and 1.8 mi. west of New LancasterOpen to traffic
Middle Creek Bridge (Mahaska County, Iowa)
Built circa 1898; Likely removed in the late 1990s or early 2000sLost Pratt pony truss bridge over Middle Creek on Ventura AvenueRemoved but not replaced
Middle Creek Bridge (Franklin County, Kansas)
Built 1908Pratt pony truss bridge over Middle Creek, 2.9 mi. north and 2.5 mi. east of PrincetonLong abandoned with deck removed
Middle Creek Road Bridge (Lancaster County, Pennsylvania)
Built 1909; rehabilitated 1925Pony truss bridge over Cocalico Creek on Middle Creek Road in RothsvilleHistoric Truss Bridge Demolished and Replaced With Covered Bridge
Middle Fork Anderson River Apricot Road (Perry County, Indiana)
Built ca. 1895; Replaced 1988Lost Pratt through truss bridge over Middle Fork Anderson River on Apricot Road, CR 37Replaced by a new bridge
Middle Fork Anderson River Bridge (Perry County, Indiana)
Built ca. 1910; replaced 1992Lost pony truss bridge over Middle Fork Anderson River on CR 101Replaced by new bridge
Middle Fork Anderson River Canada Road (Perry County, Indiana)
Built ca. 1893; Replaced 1988Lost Pratt through truss bridge over Middle Fork Anderson River on Canada Road, CR 164Replaced by a new bridge
Middle Fork Deer Creek Bridge (Perry County, Indiana)
Built ca. 1920; replaced 1996Lost pony truss bridge over Middle Fork Deer Creek on CR 81Replaced by new bridge
Middle Fork Holston River Bridge (Smyth County, Virginia)
Built 1885 by the King Iron Bridge Co.; rehabilitated 2005Pratt through truss bridge over Middle Fork Holston River on E. Chilhowie StreetClosed to traffic pending repairs to damaged endpost caused by drunk driver.
Middle Fork River Bridge (Upshur County, West Virginia)
Built in 1893 by the Canton Bridge Company of Canton, OhioThrough truss bridge over Middle Fork River on CR 5/26Open to traffic
Middle Fork Wildcat Creek Bridge (Clinton County, Indiana)
Built ca.1890's; replaced 1994Lost through truss bridge over Middle Fork Wildcat Creek on CR 675 W at 990N-680WReplaced by new bridge
Middle Fork Wildcat Creek CR 500E Bridge (Clinton County, Indiana)
Built ca. 1898 by the Lafayette Bridge CompanyLost Bedstead Pratt pony truss bridge over Middle Fork Wildcat Creek on County Road 500 EastReplaced by a new bridge
Middle Fork-South Boston Road Bridge (Washington County, Indiana)
Built ca. 1930Lost pony truss bridge over Middle Fork Blue River on Canton-South Boston RoadReplaced by a new bridge
Middle Nodaway River Bridge (Adams County, Iowa)
Built ca. 1920; rehabilitated 1974Through truss bridge over Middle Nodaway River on 125th StreetReplaced by a new bridge
Middle Nodaway River Bridge (Adair County, Iowa)
Built ca. 1950Through truss bridge over Middle Nodaway River on Fallow AvenueOpen to traffic
Middle Percha Creek Bridge (Sierra County, New Mexico)
Built 1929Through truss bridge over Middle Percha Creek on NM 152Open to traffic
Middle Raccoon River Bridge (Carroll County, Iowa)
Built 1951Through truss bridge over Middle Raccoon River on Raven RoadOpen to traffic
Middle River Bridge (Adair County, Iowa)
Built 1950Through truss bridge over Middle River on County Road G39Open to traffic
Middle River Bridge (Adair County, Iowa)
Built 1948Through truss bridge over Middle River on Quebec AvenueOpen to traffic
Middle River Bridge (Madison County, Iowa)
Built 1932Through truss bridge over Middle River on CR R35 (Bevington Park Road)Open to traffic
Middle River Bridge (Adair County, Iowa)
Built ca. 1920; rehabilitated 1993Through truss bridge over Middle River on 320th StreetOpen to traffic
Middle River Bridge (Adair County, Iowa)
Built ca. 1950Pony truss bridge over Middle River on 270th StreetOpen to traffic
Middle River Bridge (Madison County, Iowa)
Built ca. 1930; rehabilitated 1948Through truss bridge over Middle River on Adair Madison AvenueOpen to traffic
Middle River Route 703 Bridge (Augusta County, Virginia)
Built 1915Pony truss bridge over Middle River on Hewitt Rd (Route 703)Replaced by a new bridge
Middle River Route 774 Bridge (Augusta County, Virginia)
Built 1903 by the Brackett Bridge Co.; Replaced 2010Lost Pratt through truss bridge over Middle River on Cline River Road (Route 774)Replaced by new bridge
Middle Yuba River Bridge (Sierra County, California)
Lost Pratt pony truss bridge over Middle Yuba River on Unnamed Dirt RoadCollapsed
Middleton Bridge (Warren County, New York)
Built 1896 by Groton Bridge Co.; rehabilitated 1969; closed 2009Pin connected Pratt pony truss bridge over Schroon River on CR 10Intact but closed to all traffic
Middlexsex Winooski River Bridge (Washington County, Vermont)
Built by American Bridge Co. 1928, Replaced 2003 by Bailey bridge, and again by stringer in 20102 span Pratt Through TrussReplaced by a new bridge
Midland Fredericktown Road Bridge (Columbiana County, Ohio)
Built 1893 by the Penn Bridge Co.; rehabilitated 2004Through truss bridge over North Fork Little Beaver Creek on Midland Fredericktown Road (TR 1038) in CalcuttaOpen to traffic
Midtown Bridge (Older) (Bergen County, New Jersey)
Built 1900; Trolley service ended 1938; Converted to road use 1940; Replaced 2018Lost Pratt through truss bridge over Hackensack River on Public Service Corporation of New JerseyNo longer exists
Midvale Bridge (Washington County, Idaho)
Built 1911 by the J.H. Forbes Co.; replaced 1995Lost two-span through truss bridge over Weiser River at MidvaleReplaced by new bridge
Mile Creek Road Bridge (Knox County, Ohio)
Built ca 1875; Unknown Event Occured in 1926. Rehabilitated 1975Cast and Wrought Iron Half-hip Pratt pony truss bridge over Mile Creek on Mile Creek Road (TR-385)Open to traffic
Mile Load Road Bridge (Fulton County, Illinois)
Deck truss bridge over the BNSF Railroad on Mile Load Road (TR 42)Open to traffic, one lane, 10 ton weight limit
Milford Bridge (Somerset County, Pennsylvania)
Built 1900Pratt pony truss bridge over Coxes Creek on Abandoned TR486Open to pedestrians
Milford Bridge (Decatur County, Indiana)
Built ca. 1910; replaced 1995Lost pony truss bridge over Clifty Creek on CR 100 N at 100N-800WReplaced by new bridge
Milford Bridge (Kosciusko County, Indiana)
Replaced 1980Lost Half-hip Pratt pony truss bridge over Turkey Creek on Main Street (Old SR 15)Replaced by new bridge
Military Road Bridge (Older) (Woodbury County, Iowa)
Built 1882; Camelback built by South Dakota to replace pile trestle later; Replaced 1923Lost Pratt through truss bridge over Big Sioux River on RoadReplaced by a new bridge
Military Street Bridge (Old) (St. Clair County, Michigan)
Built 1884; replaced 1914Lost Pratt through truss bridge over Black River on Military StreetDemolished and replaced
Milk River Bridge (Blaine County, Montana)
Built 1930Through truss bridge over Milk River on CR 300Open to traffic
Mill Bridge (Faulkner County, Arkansas)
Built 1921; bypassed 1993Lost through truss bridge over Cadron Creek on Mill Bridge Road (CR 280)Replaced by new bridge
Mill Bridge (Westmoreland County, Pennsylvania)
Built 1938; rehabilitated 1992Through truss bridge over Kiskiminetas River on Mill Bridge Road in West LeechburgOpen to traffic
Mill Creek Bridge (Cherokee County, Iowa)
Built 1891 by the George E. King Bridge Co.; bypassed in 2006 but appears to remainThrough truss bridge over Mill Creek on Old IA 21Bypassed by a new bridge on a different alignment and abandoned
Mill Creek Bridge (Wabaunsee County, Kansas)
Built ca. 1935Through truss bridge over Mill Creek on Willard Road, 1.0 mi. east and 0.2 mi. north of Maple HillOpen to traffic
Mill Creek Bridge (Clarion County, Pennsylvania)
Built ca. 1910; Replaced 2003Pony truss bridge over Mill Creek on Old State RdReplaced by a new bridge
Mill Creek Bridge (Venango County, Pennsylvania)
Built ca. 1885 by the Smith Bridge Co.Lost Pratt pony truss bridge over Mill Creek on TR 522 (Dotter Road)Replaced by a new bridge on the old substructure
Mill Creek Bridge (Crawford County, Indiana)
Built 1885; rehabilitated 2000Through truss bridge over Mill Creek on CR 220 EastOpen to traffic
Mill Creek Bridge (Lincoln County, Missouri)
Built 1887 by the St. Louis Bridge & Iron Co.; replaced 1995Lost wrought iron pony truss bridge over Mill Creek on S. Mill Creek RoadReplaced by new bridge
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
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