There are 9,297 bridges in this category · Only showing 7,308 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.
Unicorn Avenue Bridge (Union County, Iowa)
Pony truss bridge over Thompson River on Unicorn AvenueDerelict/abandoned
Union Bridge (1909) (Saratoga County, New York)
Built 1909; rehabilitated 1985Through truss bridge over Hudson River on Broad St/126th St/US-4Open to traffic
Union Cemetery Bridge (Ashtabula County, Ohio)
Pratt through truss bridge over Rock Creek on Old Stiles AveIntact but closed to all traffic
Union Street Bridge (Schenectady County, New York)
Lost Pratt pony truss bridge over Erie Canal on Union StreetNo longer exists
Union Trail - Little Sioux River Bridge (Woodbury County, Iowa)
Built 1887, 1881 Span Added 1911, Partially Removed Ca. 1999; Converted to Trail 2006Pratt through truss bridge over Little Sioux River on the Union Bridge TrailOpen to pedestrians
Universal Stainless Bridge (Allegheny County, Pennsylvania)
Pratt pony truss bridge over Chartiers Creek on Private driveOpen to private traffic
University Avenue Bridge (Middlesex County, Massachusetts)
Built 1895 by Groton Bridge Co.; Rehabilitated 1965; Demolished 2014Lost deck truss bridge over Merrimack River on University Avenue in LowellDemolished and replaced.
University Bridge (King County, Washington)
Built 1919, approaches and bridge deck rebuilt between 1932 and 1933Bascule bridge over Portage Bay on Eastlake Avenue NE in SeattleOpen to traffic
University Heights Bridge (New York County, New York)
Originally built 1895; main span relocated in 1906; opened to traffic January 8, 1908Swing bridge over Harlem River on W. 207th Street in New YorkOpen to traffic
Unknown Bridge (Bureau County, Illinois)
Abandoned pony truss bridge at Hennepin Canal Lock 17 day use area near WyanetAbandoned
Unnamed Bridge (Racine County, Wisconsin)
Lost Pratt through truss bridge Demolished
Unnamed Creek Bridge (Kay County, Oklahoma)
Built 1902Pony truss bridge over an unnamed creek on E0270 Rd.Replaced by a new bridge
Unnamed Creek Bridge (Osage County, Oklahoma)
Built 1909Bedstead pony truss bridge over an unnamed creek on IRR FAS 5757 in BarnsdallOpen to traffic
Unnamed Creek Bridge (Davis County, Iowa)
Built ca. 1910Pony truss bridge over North Wyaconda River on Umber AvenueOpen to traffic
Unnamed Creek Bridge (Nemaha County, Kansas)
Built pre 1892 (post 1874) based on the castings.Pony truss bridge over an unnamed creek, 9.0 mi. south and 1.5 mi. east of CentraliaDerelict/abandoned
Unnamed creek tributary of Vermilion River (Livingston County, Illinois)
Pony truss bridge over unnamed creek/ tributary of Vermilion on Private drive turning west off of N 800 E Rd.Intact but closed to all traffic
Unnamed Stream Bridge (Otoe County, Nebraska)
Built ca. 1935Pony truss bridge over an unnamed stream on CR 42 (42nd Road), 1.8 mi. west of DunbarOpen to traffic
UP - 15th Street Bridge (Pierce County, Washington)
(Main design: Pratt through truss)Built 1914; Removed 1983Lost Through truss bridge over Foss Waterway on 15th Street and Union Pacific RailroadRemoved but not replaced
UP - Afton Canyon Bridge (San Bernardino County, California)
Through truss bridge over Mohave River on Union Pacific RailroadOpen to traffic
UP - American Falls Bridge (Power County, Idaho)
Built 1927, Raised and strengthed 1970'sPratt deck truss bridge over Snake River on Union Pacific Railroad (UP)Open to traffic
UP - Arkadelphia Bridge (Clark County, Arkansas)
Built 1930Two-span through truss railroad bridge over Ouachita River on the Union Pacific Railroad at ArkadelphiaOpen to traffic
UP - Arkansas River Bridge (Chaffee County, Colorado)
Through truss bridge over Arkansas River on Out of Service Union Pacific RailroadClosed to all traffic
UP - Arkansas River Bridge (Pueblo County, Colorado)
(Main design: Parker through truss)Parker through truss bridge over Arkansas River on Union Pacific RailroadOpen to traffic
UP - Auburn Ravine Bridge (Placer County, California)
Built 1909Deck truss bridge carrying railroad over I-80 in AuburnOpen to traffic
UP - Badger Creek Bridge (Fremont County, Colorado)
Through truss bridge over Badger Creek on Union Pacific RailroadAs of August 2020 accessible via County Rd. 45. Bridge open to foot traffic
UP - Big Creek Bridge (Linn County, Iowa)
Bypassed and Replaced 2017Pratt pony truss bridge over Big Creek on Union Pacific RailroadDerelict/abandoned
UP - Blackwater River Bridge (W) (Cooper County, Missouri)
Formerly Missouri PacificThrough truss bridge over Blackwater River on Union Pacific RailroadOpen to traffic
UP - Brazos River Bridge (Brazoria County, Texas)
Built ca. 1907Swing through truss bridge over Brazos River on the Union Pacific Railroad at BrazoriaOpen to traffic
UP - Brazos River Bridge (Waller County, Texas)
(Main design: Camelback through truss)Built 1906Camelback through truss bridge over Brazos River on Union Pacific RailroadOpen to traffic
UP - Byers Bridge (Arapahoe County, Colorado)
Replaced 2018Two-span through truss railroad bridge over West Bijou Creek just west of ByersReplaced by a new bridge
UP - Canal #43 Bridge (Desha County, Arkansas)
Pratt through truss bridge over Canal #43 on Arkansas Midland RailroadOpen to traffic
UP - Carquinez Strait Bridge (Contra Costa County, California)
(Main design: Warren through truss)Originally built for the Southern Pacific Railroad in 1929-1930, this is the last simple truss railroad bridge built in the United States at a new location (i.e. where none had existed before).Warren through truss bridge over Carquinez Strait on double track of Union Pacific Railroad in MartinezOpen to traffic
UP - Cedar Draw Bridge (Terrell County, Texas)
(Main design: Parker through truss)Through truss bridge over Cedar Draw on Union Pacific RailroadOpen to traffic
UP - Cedar River Bridge (Linn County, Iowa)
1898; survived the Great Flood of 2008 with minor damagesPratt through truss bridge over Cedar River on Chicago and Northwestern Railroad (now UPRR)Open to traffic
UP - Chippewa River Bridge (Eau Claire County, Wisconsin)
Built 1911 by Chicago Northwestern succeeding the bridge downstreamPratt deck truss bridge over Chippewa River on Union Pacific RailroadOpen to traffic
UP - Cibolo Creek Bridge (Bexar County, Texas)
Built 1928Through truss bridge over Cibolo Creek and Evans Road on the Union Pacific Railroad ( MKT)Open to traffic
UP - Clifton Bridge (Greenlee County, Arizona)
Pratt through truss bridge over San Francisco River on Union Pacific Railroad
UP - Comal River Bridge (Comal County, Texas)
Built 1901 by Phoenix Bridge Co. Abandoned 1989-restored to service Oct. 1998Pratt through truss bridge over Comal River on Union Pacific RailroadOpen to traffic
UP - Crooked River Bridge (Ray County, Missouri)
Built 1931 by Rock Island Railroad in a 1Bridge over Crooked River on Union Pacific RailroadOpen to traffic
UP - Dry Frio River Bridge (Uvalde County, Texas)
(Main design: Pratt through truss)Build 1903Pratt through truss bridge over Dry Frio River on RailroadOpen to traffic
UP - Eagle Creek Bridge (Multnomah County, Oregon)
Built 1935Pratt through truss bridge over Eagle Creek on Union Pacific RailroadOpen to traffic
UP - East Navidad River Bridge (Fayette County, Texas)
Built 1914Pratt through truss bridge over East Navidad River on Union Pacific Railroad Co., Glidden SubdivisionOpen
UP - Eddyville Rail Bridge (Monroe County, Iowa)
Built 1900, approach washed out and filled in 1964Pratt through truss bridge over Des Moines River & Muchakinock Creek on Union Pacific RailroadOpen to traffic
UP - Elko Bridge (Elko County, Nevada)
Through truss bridge over Humboldt River on Union Pacific RailroadOpen to traffic
UP - Estherville Railroad Bridge (Emmet County, Iowa)
Built Ca. 1894Deck truss bridge over West Fork Des Moines River on the Union Pacific Railroad in EsthervilleOpen to traffic
UP - Fall Creek Pond Bridge (Eau Claire County, Wisconsin)
Pony Truss built 1898, Deck Plate Girder built 1906Pratt pony truss bridge over Fall Creek on Union Pacific RailroadOpen to traffic
UP - Fallon Bridge (Churchill County, Nevada)
Built 1906Pratt subdivided through truss bridge over Carson River on UP RailroadOpen to traffic
UP - Frio River Bridge (Uvalde County, Texas)
Pratt through truss bridge over Frio River on RailroadOpen to traffic
UP - Gasconade River Bridge (Gasconade County, Missouri)
Lost Pratt through truss w/deck plate girder swing bridge over Gasconade River on the Union Pacific RailroadReplaced by a new bridge
UP - Grand River Bridge (Muskogee County, Oklahoma)
Built 1909Through truss bridge over Grand River on UP RailroadOpen to traffic
UP - Green River Bridge (King County, Washington)
Pratt through truss bridge over Green River on RailroadOpen to traffic
UP - Guadalupe River Bridge (N) (Comal County, Texas)
Built 1901 by The Phoenix Bridge Co.Pratt deck truss bridge over Gaudalupe River on RailroadOpen to traffic
UP - Gunnison River Bridge (Delta County, Colorado)
(Main design: Parker through truss)Through truss bridge over Gunnison River on Union Pacific RailroadReplaced by a new bridge
UP - Highley Heights Bridge (St. Francois County, Missouri)
Pratt deck truss bridge over Big River on Union Pacific RailroadOpen to traffic
UP - Hoffman Swing Bridge (Ramsey County, Minnesota)
(Main design: Warren through truss)Built 1909-10 for St. Paul Bridge & Terminal Railway, Swing Span Rebuilt 1956Warren through truss bridge over Mississippi River on Union Pacific RailroadOpen to traffic
UP - Hondo Creek Bridge (Medina County, Texas)
Plate girder approaches built ca. 19506-Panel Pratt through truss bridge over Hondo Creek on RailroadOpen to traffic
UP - Hudson Swing Bridge (Washington County, Minnesota)
(Main design: Pratt through truss)Opened 1913, replacing 1881 and 1872 bridgesPratt through truss bridge over St. Croix River on Union Pacific RailroadOpen to traffic
UP - Hunter Bridge (Comal County, Texas)
Built ca. 1901Pratt through truss bridge over York Creek on RailroadOpen to traffic
UP - Idaho Falls Bridge (Old) (Bonneville County, Idaho)
Built 1879Lost Pratt through truss bridge over Snake River on Union Pacific RailroadReplaced by a new bridge
UP - Illinois River Lift Bridge (Tazewell County, Illinois)
Built 1912Vertical lift through truss bridge over Illinois River on Union Pacific Railroad in PekinOpen to traffic
UP - Irondale Bridge (Washington County, Missouri)
Deck truss bridge over Big River on the Iron Mountain Railroad (now UPRR) north of IrondaleOpen to railroad traffic
UP - Kansas River Bridge #1 (Wyandotte County, Kansas)
Built 1903, Shifted and East Span Added 1911Pratt through truss bridge over Kansas River on Railroad (UP)Open to traffic
UP - Kansas River Bridge #2 (Wyandotte County, Kansas)
Built 1900, Shifted and East Span Added 1911Through truss bridge over Kansas River on the Union Pacific RailroadOpen to traffic
UP - Kansas River Bridge #3 (Wyandotte County, Kansas)
Built 1904 to replace previous bridge destroyed by 1903 floodFour-span through truss bridge over Kansas River on the Union Pacific Railroad just north of I-70Open to single-track railroad traffic
UP - Kickapoo Creek Viaduct (Peoria County, Illinois)
Built 1912Pratt through truss bridge over Kickapoo Creek/ Kickapoo Creek Road/Railroad on Union Pacific RailroadOpen to traffic
UP - Le Sueur Creek Bridge (Le Sueur County, Minnesota)
Built 1881 as four spans of a bridge at Hudson, Wisconsin; Rebuilt and relocated here 1899Warren pony truss bridge over Le Sueur Creek on Union Pacific RailroadOpen to traffic
UP - Little River Birdge (Bell County, Texas)
Pratt through truss bridge over Little River on Union Pacific RailroadOpen to traffic
UP - Loup River Bridge (Platte County, Nebraska)
Built 1908Pin connected Pratt through truss bridge over Loup River on railroadOpen to traffic
UP - Lower Pollard Flat Bridge (Shasta County, California)
Built 1901Pratt through truss bridge over Sacramento River on Union Pacific RailroadOpen to traffic
UP - Marys River Bridge (Randolph County, Illinois)
Through truss bridge over Marys River on the Union Pacific Railroad, south of Chester and just west of IL 3Open to railroad traffic
UP - McQueeney Bridge (Guadalupe County, Texas)
(Main design: Camelback through truss)Built 1899. Original main span replaced due to flood damage.Camelback through truss bridge over Guadalupe River on Union Pacific RailroadOpen to traffic
UP - Mountain Creek Bridge (Wagoner County, Oklahoma)
Abandoned Pratt through truss bridge over Mountain Creek on Abandoned Union Pacific Railroad lineAbandoned in 1986
UP - Navasota River Bridge (Limestone County, Texas)
Pratt through truss bridge over Navasota River on Railroad (UP)Open to traffic
UP - Neches River Bridge (Angelina County, Texas)
Built 1925Through truss bridge over Neches River on RailroadOpen to traffic
UP - North Boggy Creek Bridge (Atoka County, Oklahoma)
Located next to old alignment of US 69, parallel to current US 69Pratt deck truss bridge over North Boggy Creek on Union Pacific RailroadOpen to traffic
UP - Nueces River Bridge (Uvalde County, Texas)
(Main design: Polygonal Warren through truss with all verticals)Built 1903Through truss bridge over Nueces River on Union Pacific RailroadOpen to traffic
UP - Omaha Railroad Bridge (1916) (Pottawattamie County, Iowa)
(Main design: Parker through truss)Built 1916Through truss bridge over Missouri River on Union Pacific RailroadOpen to traffic
UP - Osage City Bridge (Cole County, Missouri)
Through truss bridge on the Union Pacific Railroad over Osage River at Osage CityOpen to traffic
UP - Piru Creek Bridge (Ventura County, California)
Built in 1902 by the American Bridge Company.Abandoned pratt through truss bridge over Piru Creek on Union Pacific Railroad in PiruAbandoned
UP - Pryor Creek Bridge (Mayes County, Oklahoma)
Built in 1898 by A&P Roberts CoPratt through truss bridge over Pryor Creek on UPRROpen to traffic, as a loading rail, no thru trains,
UP - Pudding River Bridge (Clackamas County, Oregon)
Built 1906Pratt through truss bridge over Pudding River on Union Pacific RailroadOpen to traffic
UP - Puyallup River Bridge (Pierce County, Washington)
Built 1948Through truss bridge over Puyallup River on Union Pacific RailroadOpen to traffic
UP - Red Cedar River Bridge (Dunn County, Wisconsin)
Built 1912 when the second track was added. Replaced older truss bridgePratt deck truss bridge over Red Cedar River on Union Pacific RailroadOpen to traffic
UP - Red River Bridge (Fulton County, Arkansas)
(Main design: Pratt through truss)ReplacedPratt through truss bridge over Red River on Union Pacific RailroadReplaced by a new bridge
UP - Richmond Bridge (Fort Bend County, Texas)
(Main design: Parker through truss)Closed after being damaged by flooding in 2016Parker through truss bridge over Brazo River on Union Pacific RailroadOpen
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