There are 8,071 bridges in this category · Only showing 5,999 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.


HVR - Schroon River Bridge (Warren County, New York)
Lost Pratt through truss bridge over Schroon River on Hudson Valley Railway
Removed

Hyndman Bridge (Bedford County, Pennsylvania)
Built 1882 by the Columbia Bridge Works; replaced 1997
Lost wrought-iron through truss bridge over Little Wills Creek on Schellsburg Street (TR 350) in Hyndman
Replaced by new bridge

I & M Canal Bridge (Grundy County, Illinois)
Bedstead Pratt pony truss bridge over I and M Canal on an access to the I and M Canal Trail
Open to pedestrians

I&M Canal Trail - I&M Canal Bridge (Channahon) (Grundy County, Illinois)
Abandoned road bridge, now used for foot & bike trail.
Pratt pony truss bridge over Canal on the I & M Canal Trail
Open to pedestrians

I-5 - Antlers Bridge (Shasta County, California)
Built 1941; rehabilitated 1967; Demolished 2017
Spandrel braced cantilever Deck truss bridge over Sacramento River on I-5 in Lakehead-Lakeshore
Demolished

IA394 Skunk River Bridge (Des Moines County, Iowa)
(Main design: Parker through truss)
Built 1934, replaced in 2011
Lost through truss bridge over Skunk River on IA 394 (Augusta Main Road)
Replaced by a new bridge

IA5 South River Bridge (Warren County, Iowa)
Built 1928; made obsolete by a new bridge in 1951; later closed to traffic, Collapsed 2012, later removed
Lost through truss bridge over South River on Elk Horn Street
Removed after the bridge collapsed in 2012

IAIS - Walnut Creek Bridge (Polk County, Iowa)
Pony truss bridge over Walnut Creek on Iowa Interstate Railroad
Open to traffic

IAIS - Walnut Creek Bridge #2 (Polk County, Iowa)
Built 1902, Piers Rebuilt 1943
Pony truss bridge over Walnut Creek on Iowa Interstate Railroad
Open to traffic

IANR/DM&E - Winnebago River Bridge (Portland) (Cerro Gordo County, Iowa)
Built August 1908
Pony truss bridge over Winnebago River on DM&E RR
Open to traffic

IC - Big Muddy River Bridge (Jackson County, Illinois)
Built 1886; Replaced 1903
Lost Pratt through truss bridge over Big Muddy River on Illinois Central Railroad
Replaced by a new bridge

IC - Cedar Creek Bridge (Pocahontas County, Iowa)
Built 1891; Replaced 1947
Lost Pratt through truss bridge over Cedar Creek on Railroad (IC)
Replaced by a new bridge

IC - Cedar River Bridge (Bremer County, Iowa)
Replaced 1919
Lost Pratt through truss bridge with vertical endposts over Cedar River in Janesville
Replaced

IC - East Omaha Swing Bridge (Douglas County, Nebraska)
Built 1893 by Phoenix Bridge Company, second swing span built in 1903 by American Bridge Co.
Through truss swing bridge over Missouri River on Canadian National Railway
Closed to all traffic

IC - First Dubuque Bridge (Dubuque County, Iowa)
(Main design: Pratt through truss)
Built 1868, Approach Trusses added 1872, Swing Span Replaced 1896, Rest of Bridge Replaced 1900
Lost Pratt through truss bridge over Mississippi River on Former Illinois Central Railroad
Replaced by a new bridge

IC - Hatchie River Bridge (Hardeman County, Tennessee)
Abandoned through truss bridge over Hatchie River on Illinois Central Railroad
Abandoned

IC - Iowa River Bridge (Hardin County, Iowa)
Built 1894; Replaced 1909
Lost Deck truss bridge over Iowa River on Railroad
Replaced by new bridge

IC - Kent Creek Bridge (Winnebago County, Illinois)
Located here in 1911, Truss likely dates from 1870s
Pratt through truss bridge over Kent Creek on Illinois Central Railroad spur
No longer exists

IC - Little Sioux River Bridge #1 (Cherokee County, Iowa)
Built 1886, trestle approaches rebuilt 1918
Abandoned Pratt Through Truss Bridge over Little Sioux River on Abandoned Illinois Central Railroad
Abandoned

IC - Little Sioux River Bridge #2 (Cherokee County, Iowa)
Built 1887, trestle approaches updated 1960
Abandoned Pratt Through Truss Bridge over Little Sioux River on Abandoned Illinois Central Railroad
Abandoned

IC - Little Sioux River Bridge #3 (Woodbury County, Iowa)
Built 1887, trestle approaches updated 1918
Abandoned Pratt Through Truss Bridge over Little Sioux River on Abandoned Illinois Central Railroad
Abandoned

IC - Little Sioux River Bridge #4 (Woodbury County, Iowa)
Built 1886, 1881 Truss Spans added 1911, Mostly Removed Ca. 1999
Abandoned Pratt Through Truss Bridge over Little Sioux River on Abandoned Illinois Central Railroad
Most Removed but not replaced

IC - Maquoketa River Bridge (Delaware County, Iowa)
Built ca. 1886; Replaced 1927
Lost Pratt through truss bridge over Maquoketa River on Illinois Central Railroad
Replaced by a new bridge

IC - Rock River Bridge (3rd) (Lee County, Illinois)
Built ca. 1868; Replaced 1920
Lost Pratt deck truss bridge over Rock River on Illinois Central Railroad
Replaced by a new bridge

IC - Wapsipinicon River Bridge (Buchanan County, Iowa)
Replaced 1914
Lost Pratt through truss bridge over Wapsipinicon River on Railroad
Replaced by a new bridge

IC - Wapsipinicon River Bridge (Linn County, Iowa)
Replaced 1924
Lost Pratt through truss bridge over Wapsipinicon River on Railroad (IC)
Replaced by a new bridge

IC&S - Flatrock River Bridge (Bartholomew County, Indiana)
Lost Pratt through truss bridge over Flatrock River on Indianapolis, Columbus & Southern Traction Co.
Removed

IC/CNW Overpass (Sac County, Iowa)
Built 1899, Removed sometime after the 1990 aerial imagery was taken
Lost Pratt through truss bridge over Railroad (CNW) on Railroad (IC)
Removed

IHRC - Big Bayou Bridge (Gibson County, Indiana)
Built 1915, rehabilitated in 1972
Pratt through truss bridge over Big Bayou River on dirt road, former Illinois Central Railroad
Abandoned

Illinois Prairie Path - Volunteer Bridge (Du Page County, Illinois)
Built 1907 for CA&E RR, railroad abandoned 1959, converted to trail use ca. 1964, approaches rebuilt 2010
Pratt through truss bridge over Union Pacific RR (formerly Chicago & North Western RR) on Illinois Prairie Path (formerly Chicago Aurora & Elgin RR)
Open to pedestrians

Illinois River Bridge (Cherokee County, Oklahoma)
Built circa 1920; Bypassed by new alignment of US 62 and abandoned 1964
Abandoned through truss bridge over Illinois River on Old US 62
Abandoned

Illinois Terminal - Alton Steel Yard Bridge (Madison County, Illinois)
Built 1905, Abandoned 1953
Abandoned Pratt through truss bridge over the rail yard in Alton, south of E. Broadway
Abandoned

Illinois Terminal - East St. Louis Viaduct (St. Clair County, Illinois)
(Main design: Pennsylvania through truss)
Lost Pennsylvania through truss bridge over Railroad on Illinois Terminal System
Removed

Illinois Terminal - Mackinaw River Bridge (Tazewell County, Illinois)
Built ?; Destroyed 1977
Lost Pratt through truss bridge over Mackinaw River on Illinois Terminal Railroad
Destroyed by derailment

Illinois Terminal - Mitchell Viaduct (Madison County, Illinois)
Lost Pratt through truss bridge over Railroad on Alton, Granite & St. Louis Railway
Removed but not replaced

Illinois Traction - McKinley Bridge (Peoria County, Illinois)
(Main design: Deck plate girder)
Built 1907, closed to traffic in 1951
Lost Bascule bridge over Illinois River on Illinois Terminal Railroad in Peoria
No longer exists

Illinois Tractionl/Wabash Overpass (Old) (Piatt County, Illinois)
Built 1907; Replaced 1928/29
Lost Pratt through truss bridge over Wabash Railroad on Illinois Traction System
Replaced by a new bridge

Imboden Bridge (Lawrence County, Arkansas)
(Main design: Parker pony truss)
Built 1937 by C.F. Lytle of Sioux City, Iowa
Pony and deck truss bridge over Spring River and the Frisco Railroad on US 62 at Imboden
Open to two-lane traffic, with a pedestrian sidewalk

Imhoff Road Bridge (Cooper County, Missouri)
(Main design: Parker through truss)
Built 1908 by Kansas City Bridge Co.
Two-span through truss bridge over Lamine River on Imhoff Road
Closed to traffic

IMRR - Sangamon River Bridge (Mason County, Illinois)
Through truss bridge over Sangamon River on Chicago & Illinois Midland Railway SE of Kilbourne
Open to traffic

IN61 South Fork Patoka River Bridge (Pike County, Indiana)
Built 1932; rehabilitated 1984; replaced 2002
Lost through truss bridge over South Fork Patoka River on IN 61
Replaced by new bridge

Independence Bridge (Pike County, Illinois)
Built or relocated here 1962; replaced 2013
Through truss bridge over Honey Creek on Road 900 N (Township Road 359) east of Independence, 4.16 mi. east of Independence
Replaced by a new bridge

Independence Road Bridge (Herkimer County, New York)
Built 1895; rehabilitated 2003
Pratt through truss bridge over North Branch Moose River on snowmobile trail
Open to pedestrians only

Indian Creek Bridge (Greene County, Indiana)
Built 1905
Pony truss bridge over Indian Creek on CR 1360 East
Open to traffic

Indian Creek Bridge (Madison County, Illinois)
replaced a pony plate girder railroad bridge (which was relocated) using the same abuntments
Modern pratt pony truss bridge over Indian Creek on MCT Watershed Trail in South Roxana
Open to pedestrians and bicyclists

Indian Creek Bridge (Bourbon County, Kansas)
Through truss bridge over Indian Creek on Yale Rd.
Closed to all traffic

Indian Creek Bridge (Monroe County, West Virginia)
Built 1891, removed 2010
Lost through truss bridge over Indian Creek on CR 23/8
Replaced by a new bridge

Indian Creek Bridge (Polk County, Iowa)
Built 1916
Through truss bridge over Indian Creek on NE 162nd Avenue
Open to traffic

Indian Creek Bridge (LaSalle County, Illinois)
Pony truss bridge over Indian Creek on Private Drive


Indian Creek CR 416 Bridge (Pike County, Missouri)
Pony truss bridge over Indian Creek on CR 416
Open to traffic

Indian Creek CR 650W Bridge (Montgomery County, Indiana)
Built in 1914 by the Elkhart Bridge & Iron Company; replaced 1992
Lost through truss bridge over Indian Creek on County Road 650 West
Replaced by new bridge

Indian Creek Route EE Bridge (McDonald County, Missouri)
Built 1928
Three-span through truss bridge over Indian Creek on Route EE in Lanagan
Open to two-lane traffic

Indian Ford Bridge (Stoddard County, Missouri)
Formerly a bridge on the Frisco Hoxie Branch railroad built in 1926(?) and later retrofitted for vehicle use when the line was discontinued in 1967
Through truss bridge over St. Francis River between Puxico and Rombauer on Stoddard CR 499
Closed

Indian Ford Bridge (Fulton County, Illinois)
Built ca. 1917; replaced 1984. One of the nine bridges submitted to NRHP in "Metal Highway Bridges of Fulton County Thematic Resources", 1980-10-29
Lost Pratt through truss bridge over Spoon River on County Highway 20
Replaced by new bridge

Indian Grove Road Bridge (Wright County, Missouri)
Built ca. 1920; retrofitted as a steel stringer bridge in 1978
Pony truss bridge over a branch of Gasconade River on Indian Grove Road
Open to traffic

Indian Mill Bridge (Wyandot County, Ohio)
Built 1913 by the Modern Construction Co.
Through truss bridge over Sandusky River on CR 47
Open to traffic

Indian Mill Pony Truss (Wyandot County, Ohio)
Built in 1891 by the Wrought Iron Bridge Co. of Canton, Ohio. Moved here from another location.
Pratt pony truss bridge over dry ditch on foot path
Open to pedestrians

Indiana Railroad - Wildcat Creek Bridge (Howard County, Indiana)
Built to carry former interurban line from Marion, Indiana to Kokomo, Indiana in or about 1905. Abandoned in early 1930's.
Lost Pratt through trus bridge over Wildcat Creek(today Kokomo Reservoir) on formerly Indiana Railroad
Removed

INPR - North Fork Payette River Bridge (Cabarton) (Valley County, Idaho)
Pratt through truss bridge over North Fork Payette River on Idaho Northern & Pacific Railroad
Open to traffic

INRD - Fall Creek Bridge (Marion County, Indiana)
Part of the second oldest rail line in Indiana, this bridge helped connect Indianapolis with Kokomo, Peru, Plymouth, and Michigan City. Today Indiana Transportation Museum uses this line for excursions including the annual Indiana State Fair Train.
Pony truss bridge over Fall Creek on Railroad in Indianapolis
Open to traffic

INRD - Wabash River Bridge (Sullivan County, Indiana)
Built 1910, Through Truss center Swing built for another bridge in Kentucky in 1890, later moved & fabricated to fit this bridge, later Swing span replaced with plate girder with center wheel left in place in 1965
Through truss bridge over Wabash River and two county roads on Indiana Railroad (former Illinois Central Railroad)
Open to traffic

INRD - White River Bridge (Greene County, Indiana)
Built 1898 for the Chicago, Terre Haute and Southeastern Railway, replaced in 2015
Lost Through truss bridge over White River on Indiana Rail Road near Elnora
Replaced by a new bridge

INRD - White River Bridge (Elliston) (Greene County, Indiana)
Built ca. 1906
Deck truss bridge over White River on Indiana Railroad (former Illinois Central Railroad) in Elliston
Open to traffic

Inter-Urban Trail Bridge (Polk County, Iowa)
Built 1905, Abandoned 1982; Converted to trail use 1998, repaired 2012
Pratt through truss bridge over Des Moines River on Interurban Trail
Open to pedestrians

International Bridge (Webb County, Texas)
Built in the 1880s; Destroyed April 28, 1905
Lost Pratt through truss bridge over Rio Grande on Footpath
Destroyed by flooding

International Railway Co. - 18 Mile Creek Bridge (E) (Niagara County, New York)
Built 1889
Abandoned through truss bridge over 18 Mile Creek
Abandoned

Interstate Canal Bridge (Scotts Bluff County, Nebraska)
Built 1915
Pratt pony truss bridge over Interstate Canal on a bypassed section of Sugar Factory Rd (Co Rd 23)
Open to pedestrians

Iola Bridge (Gunnison County, Colorado)
Built 1908
Pratt through truss bridge over Gunnison River on Road
Inundated?

Ione Bridge (Pend Oreille County, Washington)
Built 1934
Deck truss bridge over Pend Oreille River on Sullivan Lake Road (CR 9345)
Open to traffic

IORY - Turtle Creek Bridge (Warren County, Ohio)
Pratt through truss bridge over Turtle Creek on Lebanon Mason Monroe Railroad
Open to traffic

Iowa River Bridge (Iowa County, Iowa)
Lost Pratt through truss bridge over Iowa River on IA 21 (?)
Replaced by a new bridge

IR - Fox River Bridge (LaSalle County, Illinois)
Pratt deck truss bridge over Fox River on Illinois Railway West of Sheridan
Open to traffic

IR - Illinois River Bridge (Ottawa) (LaSalle County, Illinois)
Built 1898; Lift span added ca. 1932
Through truss bridge over Illinois River on Chicago, Burlington, and Quincy Railroad in Ottawa


IR - Muscatatuck River Bridge (Jackson County, Indiana)
Built 1907; Removed 1941
Lost Pratt through truss bridge over Muscatatuck River on Indiana Railroad
Removed

IR - Rock River Bridge (Winnebago County, Illinois)
Built 1914 and 1918; Converted to Trail Use 2016
Through truss bridge over Rock River on former Illinois Railway
Open to pedestrians only

IR - Vernon Fork Muscatatuck River Bridge (Jackson County, Indiana)
Built 1907; Removed 1941
Lost Pratt through truss bridge over Vernon Fork Muscatatuck River on Indiana Railroad
Removed

Irish Creek Bridge (Marshall County, Kansas)
Built ca. 1910; lost 2014
Lost pony truss bridge over Irish Creek, 3.0 mi. south and 1.5 mi. west of Vliets
Replaced by a new bridge

Iron Bridge at Howard Hill Road (Windsor County, Vermont)
Built 1890 by Groton Bridge Co.; Replaced by new bridge and put into storage 2007
Pratt through truss bridge over Black River on C3029 (Howard Hill Rd) in Cavendish
Replaced by new bridge and put into storage.

Iron Bridge Lane Bridge (Allegheny County, Pennsylvania)
Built in 1878 by the Morse Bridge Company of Youngstown, Ohio
Pony truss bridge over Bull Creek on Iron Bridge Road


Iron Bridge near Preston Hollow, NY (Albany County, New York)
Pratt through truss bridge
Replaced

Iron Bridge Road Bridge (Lancaster County, Pennsylvania)
Built 1898; rehabilitated 1975
Pony truss bridge over Conestoga River on Iron Bridge Road
Open to traffic

Iron Bridge Road Bridge (De Witt County, Illinois)
Abandoned 1989
Pratt through truss bridge over Salt Creek on a former alignment of North 830 E. Road
Abandoned

Iron Bridge Trail - North Fork Wheeling Creek Bridge (Greene County, Pennsylvania)
Built 1914 Rehabilitated 2007
Pony truss bridge over North Fork Wheeling Creek on Iron Bridge Trail
Open to pedestrians only

Iron Horse Regional Trail - Walnut Creek Bridge (Monument Boulevard) (Contra Costa County, California)
Unknown history, part of an urban railroad to trail conversion project
Pratt through truss bridge over Walnut Creek on Iron Horse Trail
Open to pedestrians

Iron Horse Regional Trail - Walnut Creek Bridge (Ygnacio Valley Road) (Contra Costa County, California)
Railroad Bridge, 1929, re-used at this location for pedestrian walkway
Pratt through truss bridge over Walnut Creek on Iron Horse Trail
Open to pedestrians

Iron Horse Trail - Yakima River Bridge #5 (Kittitas County, Washington)
Built 1954
Through truss bridge over Yakima River on Iron Horse Trail
Open to pedestrians only

Iron Mountain - Arkansas River Bridge (Pulaski County, Arkansas)
Lost Pratt through truss bridge over Arkansas River on Iron Mountain Railroad
No longer exists

Iron Mountain - Judsonia Bridge (Old) (White County, Arkansas)
Replaced 1912
Lost Pratt through truss bridge over Little Red River on St. Louis, Iron Mountain & Southern Railway
Replaced by a new bridge

Irons Fork AR 88 Bridge (Polk County, Arkansas)
Built 1907; Replaced 1955
Lost two-span through truss bridge over Irons Fork on AR 88 east of Mena
Replaced by a new bridge in 1955

Ironwood Bluff Bridge (Itawamba County, Mississippi)
Built 1921
Through truss bridge over Old Tombigbee River on Van Buren Road
Open to traffic

Iroquois River CR 800W Bridge (Jasper County, Indiana)
Built ca. 1910
Lost Pratt pony truss bridge over Iroquois River on County Road 800 West
Replaced by a new bridge

ISC - Silver Creek Bridge (Clark County, Indiana)
Lost Pratt through truss bridge over Silver Creek on New Albany & Louisville Electric Railway
Removed

Island Park Bridge (Lenawee County, Michigan)
Originally on Church St., removed & stored in 30's, moved to park entrance, moved to present location 1980's.
Pratt pony truss bridge over South Branch Raisin River on Island Park Trail
Open to pedestrians only

Island Road Bridge over Rockaway Creek (Hunterdon County, New Jersey)
splint reinforced in 2001
Pratt pony truss bridge over Rockaway Creek on Island Road
Splint reinforced with pair of 36"x12" girders

Ivanhoe Bridge (Older) (Linn County, Iowa)
(Main design: Bowstring through truss)
Built 1877, Southwest part of the bridge rebuilt 1910-12 with a Pratt truss; Replaced 1946
Lost Bowstring through truss bridge over Cedar River on Road
Replaced by a new bridge

J & J Rogers Mill Bridge (Essex County, New York)
Built circa 1900; Abandoned 1971
Pratt through truss bridge over Ausable River on Former light railway
Intact but closed to all traffic

J. Robert Chapman Memorial Bridge (Solano County, California)
Built 1906, abandoned 1960's, rehabilitated, pedestrian, 2006.
Pratt through truss bridge over Putah Creek on Pedestrian Walkway in Winters
Open to pedestrians

J.D.Coffing Bridge (Fountain County, Indiana)
Built in 1886 as part of a 7-span bridge across the Wabash near Attica, moved to this location in 1924.
Two-span through truss bridge over Coal Creek on CR 800 South
Open to traffic

Jack C. Fisher Park Walking Trail Bridge (Daviess County, Kentucky)
Pratt pony truss bridge over a pond on the Jack C. Fisher Walking Trail
Open to pedestrians only

Jackson Boulevard Bridge (Cook County, Illinois)
Built 1916
Bascule bridge over South Branch Chicago River on Jackson Blvd. (original Rte 66)in Chicago
Open to traffic