There are 9,023 bridges in this category · Only showing 6,976 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.


Uintah Bridge (Weber County, Utah)
Replaced 1986
Lost Pratt through truss bridge over Weber River on Uintah Town Street
Replaced by new bridge

Ulah Road Bridge (Henry County, Illinois)
Built 1933; rehabilitated 2000
Through truss bridge over Edwards River on Ulah Road
Open to traffic

UN-L East Campus Bridge (Lancaster County, Nebraska)
Built 1971
Pratt pony truss bridge over Deadman's Run on North 38th Street in the UNL East Campus


Uncle John Creek Bridge (Canadian County, Oklahoma)
Built 1921; replaced 2016
Lost Through truss bridge over Uncle John Creek on E0900 Rd.
Replaced by a new bridge

Uncompahgre RiverWay Trail - Ridgway Bridge (Ouray County, Colorado)
Buil ? at Pueblo across the Arkansas River; Relocated to here some point after 1917
Pratt through truss bridge over Uncompahgre River on Uncompahgre RiverWay Trail
Open to pedestrians only

Underwood Ford Bridge (Orange County, Indiana)
Built 1904; rehabilitated 1995
Through truss bridge over French Lick Creek on Gorge Street in French Lick
Open to traffic

Unicorn Avenue Bridge (Union County, Iowa)
Pony truss bridge over Thompson River on Unicorn Avenue
Derelict/abandoned

Union Bridge (Saratoga County, New York)
Built 1909; rehabilitated 1985
Through truss bridge over Hudson River on 126th St. (U.S. Rte. 4) in Waterford
Open to traffic

Union Cemetery Bridge (Ashtabula County, Ohio)
Pratt through truss bridge over Rock Creek on Old Stiles Ave
Intact but closed to all traffic

Union Street Bridge (Schenectady County, New York)
Lost Pratt pony truss bridge over Erie Canal on Union Street
No longer exists

Union Street Railroad Bridge (Marion County, Oregon)
Built 1913 by Southern Pacific Railroad, 2008 Converted for pedestrian use
Pratt through truss bridge over Willamette River on Pedestrian/Bicycle trail (former Union Pacific Railroad) in Salem
Open to pedestrians

Union Trail - Little Sioux River Bridge (Woodbury County, Iowa)
Built 1887, 1881 Span Added 1911, Partially Removed Ca. 1999; Converted to Trail 2006
Pratt through truss bridge over Little Sioux River on the Union Bridge Trail
Open to pedestrians

Universal Stainless Bridge (Allegheny County, Pennsylvania)
Pratt pony truss bridge over Chartiers Creek on Private drive
Open to private traffic

University Avenue Bridge (Middlesex County, Massachusetts)
Built 1895 by Groton Bridge Co.; Rehabilitated 1965; Demolished 2014
Lost deck truss bridge over Merrimack River on University Avenue in Lowell
Demolished and replaced.

University Bridge (King County, Washington)
Built 1919, approaches and bridge deck rebuilt between 1932 and 1933
Bascule bridge over Portage Bay on Eastlake Avenue NE in Seattle
Open to traffic

University Heights Bridge (New York County, New York)
Originally built 1895; main span relocated in 1906; opened to traffic January 8, 1908
Swing bridge over Harlem River on W. 207th Street in New York
Open to traffic

Unknown Bridge (Bureau County, Illinois)
Abandoned pony truss bridge at Hennepin Canal Lock 17 day use area near Wyanet
Abandoned

Unknown Iowa River Bridge (Johnson County, Iowa)
Lost Truss bridge over Iowa River on Road
Replaced by new bridge

Unknown just north of the Conasauga River Bridge (Bradley County, Tennessee)
Built around 1900?
Abandoned pratt pony truss bridge over Mill Creek on possible former alignment of Spring Place Road
Abandoned

Unnamed Bridge (Racine County, Wisconsin)
Lost Pratt through truss bridge
Demolished

Unnamed Creek Bridge (Kay County, Oklahoma)
Built 1902
Pony truss bridge over an unnamed creek on E0270 Rd.
Replaced by a new bridge

Unnamed Creek Bridge (Osage County, Oklahoma)
Built 1909
Bedstead pony truss bridge over an unnamed creek on IRR FAS 5757 in Barnsdall
Open to traffic

Unnamed Creek Bridge (Davis County, Iowa)
Built ca. 1910
Pony truss bridge over North Wyaconda River on Umber Avenue
Open to traffic

Unnamed Creek Bridge (Nemaha County, Kansas)
Built ca. 1910
Pony truss bridge over an unnamed creek, 9.0 mi. south and 1.5 mi. east of Centralia
Derelict/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. 1935
Pony truss bridge over an unnamed stream on CR 42 (42nd Road), 1.8 mi. west of Dunbar
Open to traffic

UP - 15th Street Bridge (Pierce County, Washington)
(Main design: Pratt through truss)
Built 1914; Removed 1983
Lost Through truss bridge over Foss Waterway on 15th Street and Union Pacific Railroad
Removed but not replaced

UP - Afton Canyon Bridge (San Bernardino County, California)
Through truss bridge over Mohave River on Union Pacific Railroad
Open to traffic

UP - American Falls Bridge (Power County, Idaho)
Built 1927, Raised and strengthed 1970's
Pratt deck truss bridge over Snake River on Union Pacific Railroad (UP)
Open to traffic

UP - Arkadelphia Bridge (Clark County, Arkansas)
Built 1930
Two-span through truss railroad bridge over Ouachita River on the Union Pacific Railroad at Arkadelphia
Open to traffic

UP - Arkansas River Bridge (Chaffee County, Colorado)
Through truss bridge over Arkansas River on Out of Service Union Pacific Railroad
Closed 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 Railroad
Open to traffic

UP - Auburn Ravine Bridge (Placer County, California)
Built 1909
Deck truss bridge carrying railroad over I-80 in Auburn
Open to traffic

UP - Badger Creek Bridge (Fremont County, Colorado)
Through truss bridge over Badger Creek on Union Pacific Railroad
Open to traffic

UP - Big Blue River Bridge #2 (Marshall County, Kansas)
Built here 1973
Pratt through truss bridge over Big Blue River on Railroad
Open to traffic

UP - Big Creek Bridge (Linn County, Iowa)
Bypassed and Replaced 2017
Pratt pony truss bridge over Big Creek on Union Pacific Railroad
Derelict/abandoned

UP - Blackwater River Bridge (W) (Cooper County, Missouri)
Formerly Missouri Pacific
Through truss bridge over Blackwater River on Union Pacific Railroad
Open to traffic

UP - Brazos River Bridge (Brazoria County, Texas)
Built ca. 1907
Swing through truss bridge over Brazos River on the Union Pacific Railroad at Brazoria
Open to traffic

UP - Brazos River Bridge (Waller County, Texas)
(Main design: Camelback through truss)
Built 1906
Camelback through truss bridge over Brazos River on Union Pacific Railroad
Open to traffic

UP - Brazos River Bridge (Richmond) (Fort Bend County, Texas)
(Main design: Parker through truss)
Closed after being damaged by flooding in 2016
Parker through truss bridge over Brazo River on Union Pacific Railroad
Open

UP - Brazos River Bridge (Waco) (McLennan County, Texas)
Pratt through truss bridge over Brazos River on Railroad
Open to traffic

UP - Byers Bridge (Arapahoe County, Colorado)
Replaced 2018
Two-span through truss railroad bridge over West Bijou Creek just west of Byers
Replaced by a new bridge

UP - Canal #43 Bridge (Desha County, Arkansas)
Pratt through truss bridge over Canal #43 on Arkansas Midland Railroad
Open 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 Martinez
Open to traffic

UP - Cedar Draw Bridge (Terrell County, Texas)
(Main design: Parker through truss)
Through truss bridge over Cedar Draw on Union Pacific Railroad
Open to traffic

UP - Cedar River Bridge (Linn County, Iowa)
1898; survived the Great Flood of 2008 with minor damages
Pratt 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 downstream
Pratt deck truss bridge over Chippewa River on Union Pacific Railroad
Open to traffic

UP - Cibolo Creek Bridge (Bexar County, Texas)
Built 1928
Through 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. 1998
Pratt through truss bridge over Comal River on Union Pacific Railroad
Open to traffic

UP - Crooked River Bridge (Ray County, Missouri)
Built 1931 by Rock Island Railroad in a 1
Bridge over Crooked River on Union Pacific Railroad
Open to traffic

UP - Dry Frio River Bridge (Uvalde County, Texas)
(Main design: Pratt through truss)
Pratt through truss bridge over Dry Frio River on Railroad
Open to traffic

UP - Eagle Creek Bridge (Multnomah County, Oregon)
Built 1935
Pratt through truss bridge over Eagle Creek on Union Pacific Railroad
Open to traffic

UP - Eagle River Bridge (Eagle) (Eagle County, Colorado)
Pratt Deck Truss Bridge over Eagle River on Union Pacific Railroad
Intact but closed to all traffic

UP - East Navidad River Bridge (Fayette County, Texas)
Built 1914
Pratt through truss bridge over East Navidad River on Union Pacific Railroad Co., Glidden Subdivision
Open

UP - Eddyville Rail Bridge (Monroe County, Iowa)
Built 1900, approach washed out and filled in 1964
Pratt through truss bridge over Des Moines River & Muchakinock Creek on Union Pacific Railroad
Open to traffic

UP - Elkhorn River Bridge (Waterloo) (Douglas County, Nebraska)
Built 1906
Pratt Through Truss bridge over Elkhorn River on Union Pacific Railroad
Open to traffic

UP - Elko Bridge (Elko County, Nevada)
Through truss bridge over Humboldt River on Union Pacific Railroad
Open to traffic

UP - Estherville Railroad Bridge (Emmet County, Iowa)
Built Ca. 1894
Deck truss bridge over West Fork Des Moines River on the Union Pacific Railroad in Estherville
Open to traffic

UP - Fall Creek Pond Bridge (Eau Claire County, Wisconsin)
Pony Truss built 1898, Deck Plate Girder built 1906
Pratt pony truss bridge over Fall Creek on Union Pacific Railroad
Open to traffic

UP - Fallon Bridge (Churchill County, Nevada)
Built 1906
Pratt subdivided through truss bridge over Carson River on Railroad
Open to traffic

UP - Frio River Bridge (Uvalde County, Texas)
Pratt through truss bridge over Frio River on Railroad
Open 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 Railroad
Replaced by a new bridge

UP - Grand River Bridge (Muskogee County, Oklahoma)
Built 1909
Through truss bridge over Grand River on UP Railroad
Open to traffic

UP - Green River Bridge (King County, Washington)
Pratt through truss bridge over Green River on Railroad
Open to traffic

UP - Green River Bridge (Spur) (King County, Washington)
Pratt through truss bridge over Green River on Railroad
Open to traffic

UP - Guadalupe River Bridge (McQueeney) (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 Railroad
Open 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 Railroad
Open to traffic

UP - Guadalupe River Bridge (Victoria) (Victoria County, Texas)
Built 1927
Pratt through truss bridge over Guadalupe River on Union Pacific Railroad
Open to traffic

UP - Gunnison River Bridge (Delta County, Colorado)
(Main design: Parker through truss)
Through truss bridge over Gunnison River on Union Pacific Railroad
Replaced by a new bridge

UP - Highley Heights Bridge (St. Francois County, Missouri)
Pratt deck truss bridge over Big River on Union Pacific Railroad
Open 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 1956
Warren through truss bridge over Mississippi River on Union Pacific Railroad
Open to traffic

UP - Hondo Creek Bridge (Medina County, Texas)
Built ca. 1950
6-Panel Pratt through truss bridge over Hondo Creek on Railroad
Open to traffic

UP - Hudson Swing Bridge (Washington County, Minnesota)
(Main design: Pratt through truss)
Opened 1913, replacing 1881 and 1872 bridges
Pratt through truss bridge over St. Croix River on Union Pacific Railroad
Open to traffic

UP - Humboldt River Bridge (East Carlin) (Elko County, Nevada)
Pratt through truss bridge over Humboldt River on Railroad
Open to traffic

UP - Humboldt River Bridge (West Elko No. 1) (Elko County, Nevada)
Pratt through truss bridge over Humboldt River on Railroad
Open to traffic

UP - Humboldt River Bridge (West Elko No. 2) (Elko County, Nevada)
Pratt through truss bridge over Humboldt River on Railroad
Open to traffic

UP - Humboldt River Bridge No. 2 (Elko County, Nevada)
Through truss bridge over Humboldt River on railroad
Open

UP - Hunter Bridge (Comal County, Texas)
Built ca. 1901
Pratt through truss bridge over York Creek on Railroad
Open to traffic

UP - Idaho Falls Bridge (Old) (Bonneville County, Idaho)
Built 1879
Lost Pratt through truss bridge over Snake River on Union Pacific Railroad
Replaced by a new bridge

UP - Illinois River Lift Bridge (Tazewell County, Illinois)
Built 1912
Vertical lift through truss bridge over Illinois River on Union Pacific Railroad in Pekin
Open to traffic

UP - Irondale Bridge (Washington County, Missouri)
Deck truss bridge over Big River on the Iron Mountain Railroad (now UPRR) north of Irondale
Open to railroad traffic

UP - Kansas River Bridge #1 (Wyandotte County, Kansas)
Built 1903, Shifted and East Span Added 1911
Pratt 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 1911
Through truss bridge over Kansas River on the Union Pacific Railroad
Open to traffic

UP - Kansas River Bridge #3 (Wyandotte County, Kansas)
Built 1904 to replace previous bridge destroyed by 1903 flood
Four-span through truss bridge over Kansas River on the Union Pacific Railroad just north of I-70
Open to single-track railroad traffic

UP - Kickapoo Creek Viaduct (Peoria County, Illinois)
Built 1912
Pratt through truss bridge over Kickapoo Creek/ Kickapoo Creek Road/Railroad on Union Pacific Railroad
Open 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 1899
Warren pony truss bridge over Le Sueur Creek on Union Pacific Railroad
Open to traffic

UP - Little River Birdge (Bell County, Texas)
Pratt through truss bridge over Little River on Union Pacific Railroad
Open to traffic

UP - Loup River Bridge (Platte County, Nebraska)
Built 1908
Pin connected Pratt through truss bridge over Loup River on railroad
Open to traffic

UP - Lower Pollard Flat Bridge (Shasta County, California)
Built 1901
Pratt through truss bridge over Sacramento River on Union Pacific Railroad
Open 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 3
Open to railroad traffic

UP - Mountain Creek Bridge (Wagoner County, Oklahoma)
Abandoned Pratt through truss bridge over Mountain Creek on Abandoned Union Pacific Railroad line
Abandoned 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 1925
Through truss bridge over Neches River on Railroad
Open to traffic

UP - North Boggy Creek Bridge (Atoka County, Oklahoma)
Located next to old alignment of US 69, parallel to current US 69
Pratt deck truss bridge over North Boggy Creek on Union Pacific Railroad
Open to traffic

UP - Omaha Railroad Bridge (Pottawattamie County, Iowa)
(Main design: Parker through truss)
Built 1916
Through truss bridge over Missouri River on Union Pacific Railroad
Open to traffic

UP - Osage City Bridge (Cole County, Missouri)
Through truss bridge on the Union Pacific Railroad over Osage River at Osage City
Open to traffic

UP - Palouse River Bridge Br279.10 (Whitman County, Washington)
Built 1912
Pratt deck truss bridge over Palouse River on Union Pacific RR Ayer Subdivision
Open 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 Piru
Abandoned

UP - Pryor Creek Bridge (Mayes County, Oklahoma)
Built in 1898 by A&P Roberts Co
Pratt through truss bridge over Pryor Creek on UPRR
Open to traffic, as a loading rail, no thru trains,