There are 8,254 bridges in this category · Only showing 6,215 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.

Lost Creek Bridge No. 1 (Lincoln County, Missouri)
Pratt pony truss bridge over Lost Creek on Farm road
Open to traffic

Lost Creek Bridge No. 2 (Lincoln County, Missouri)
Pratt pony truss bridge over Lost Creek on Farm road
Open to traffic

Lost Creek Bridge No. 3 (Lincoln County, Missouri)
Pratt pony truss bridge over Lost Creek on Farm road
Open to traffic

Lost River Bridge (Hardy County, West Virginia)
Built 1931; rehabilitated 1994
Through truss bridge over Lost River on CR 55/20
Open to traffic

Lost River CR 49 (Martin County, Indiana)
Built ca. 1900; Replaced 1990
Bridge over Lost River on Powell Valley Rd., CR 49
Replaced by a new bridge

Lost River-101 Ranch Rd. Bridge (Orange County, Indiana)
Built ca. 1910
Lost Pratt pony truss bridge over Lost River on 101 Ranch Road (CR 960W)
Replaced by a new bridge

Lost River-Tater Rd. Bridge (Orange County, Indiana)
Built ca. 1920; rehabilitated 1992
Pony truss bridge over Lost River on Tater Road (CR 500E)
Open to traffic

Louie Road Bridge (Siskiyou County, California)
Built 1935
Through truss bridge over Shasta River (Louie Br) on Louie Road
Open to traffic

Louis Creek Bridge (Iroquois County, Illinois)
Built 1907
Pony truss bridge over Louis Creek on TR 14A
Removed and replaced

Loup City State Aid Bridge (Sherman County, Nebraska)
Built 1913
Lost Pratt through truss bridge over Loup River on NE-10
Replaced by a new bridge

Loutre River CR 1051 Bridge (Callaway County, Missouri)
Built 1905 by the Illinois Bridge & Iron Co.
Pony truss bridge over Loutre River on CR 1051
Open to traffic

Lover's Lane Bridge (Floyd County, Iowa)
Built 1884; replaced 1922
Lost Pratt through truss bridge over Shell Rock River on Main Avenue
Replaced by a new bridge

Lover's Lane Bridge (Lewis and Clark County, Montana)
Built 1914
Through truss bridge over Elk Creek 041 on CR 309
Open to traffic

Lovers Lane Bridge (Buchanan County, Iowa)
Abandoned pony truss bridge
Derelict/abandoned

Low Brown Ford Bridge (Cedar County, Missouri)
Built 1917
Lost Pratt through truss bridge over Bear Creek on CR 287
Demolished

Lowe Bridge (White County, Illinois)
Built 1891
Abandoned Pratt through truss bridge over Little Wabash River on TR 252
Abandoned with deck missing

Lowell Bridge (Henry County, Iowa)
(Main design: Pratt through truss)
Built 1889; Replaced 1976
Lost Pratt through truss bridge over Skunk River on Road
Replaced by a new bridge

Lowellville Bridge (Mahoning County, Ohio)
Lost Pratt through truss bridge over Mahoning River on Washington Street
Replaced by a new bridge

Lower Dillsboro Road Bridge (Dearborn County, Indiana)
Built 1926; replaced 1991
Lost through truss bridge over South Hogan Creek on Lower Dillsboro Road
Replaced by new bridge

Lower Elgin Road Bridge (Bastrop County, Texas)
The KCBI bid for several bridges (3 or 4--exact details TBD), including this one, was for $12,829 and was accepted by the Bastrop County Commissioners Court on May 31, 1887 (source: Bastrop County Commissioners Court meeting minutes, Vol. D. p. 270)
Pratt through-truss bridge over Wilbarger Creek on Lower Elgin Road (CR 55). This road has also been known as Coats Rd.
Was open to pedestrians until the flooding of Wilbarger Creek in May, 2015. As a result of the flood, the bridge sustained damage to the decking and was closed by Bastrop County.

Lower Gas Point Road Bridge (Shasta County, California)
Built 1920
Through truss bridge over North Fork Cottonwood Creek on Lower Gas Point Road
Open to traffic

Lower Greenville Bridge (Wayne County, Missouri)
(Main design: Pennsylvania through truss)
Built in 1911 by the Stupp Bros. Bridge & Iron Co. removed in 1931 by S. J. Cohen Construction Co,
Lost Bridge over St. Francis River on State Route 23
No longer exists, displaced lally columns remain along river/lake bank

Lower Iron Bridge (Dale County, Alabama)
Abandoned pratt through truss bridge over Choctawhatchee River on an abandoned section of Co Rd 421
Abandoned

Lower Landsdown Road Bridge (Hunterdon County, New Jersey)
Built 1885; rehabilitated 1982
Phoenix column Pratt through truss bridge over Capoolong Creek on Lower Landsdown Road
Open to traffic

Lower Pine Run Bridge (Armstrong County, Pennsylvania)
Built ca. 1895
Through truss bridge over Pine Run on TR 748
Open to traffic

Lower Trenton Bridge (Old) (Mercer County, New Jersey)
rebuilt 1876, 1892, 1898
Lost Pratt through truss bridge over Delaware River on PRR
Superstructure replaced

Lowndes Bridge (Wayne County, Missouri)
Built 1913, probably by the Vincennes Bridge Co.; closed to traffic in 2008; demolished Feb. 2010
Lost through truss bridge over Bear Creek located at the Iron Bridge Conservation Area
No longer exists

Loyalsock Creek Bridge (Sullivan County, Pennsylvania)
Built 1937; rehabilitated 1987
Through truss bridge over Loyalsock Creek on PA 87 in Forksville
Open to traffic

LRWN - Fourche LaFave River Bridge (Perry County, Arkansas)
Through truss bridge over Fourche LaFave River on Little Rock & Western Railroad
Open to traffic

LS&MS - Chagrin River Bridge (Old) (Lake County, Ohio)
Built ?; Replaced 1904
Lost Pratt deck truss bridge over Chagrin River on Lake Shore & Michagan Southern Railroad
Replaced by a new bridge

LSE - Black River Bridge (Lorain County, Ohio)
Built 1905; Removed ?
Lost Pratt deck truss bridge over Black River on Lake Shore Electric Railroad
Removed

LSRC - Bay City Swing Bridge (Bay County, Michigan)
Built 1892
Pratt through truss bridge over Saginaw River on Lake State Railway (formerly Detroit & Mackinac RR)
Open to traffic

Lucas Grove Road Lowe Run Bridge (Muscatine County, Iowa)
Lost Pratt through truss bridge over Lowe Run on Muscatine-Des Moines Shortline/Lucas Grove Road
Replaced by a new bridge

Luce Line Trail Bridge (Hennepin County, Minnesota)
Built 1885 in Pearl, Illinois; Relocated to Long Lake in 1914; Relocated again 2008
Pratt through truss bridge over Wayzata Boulevard on Luce Line State Trail
Open to pedestrians

Lucien Bridge (Franklin County, Mississippi)
Built 1938
Through truss bridge over McCall Creek on Stewart Road
Closed

Lucy Creek Bridge (Osage County, Oklahoma)
Built ca. 1930
Pony truss bridge over Lucy Creek on FAS 5754
Open to traffic

Lundy Bridge (Winneshiek County, Iowa)
Built 1900
Through truss bridge over Upper Iowa River on Lundy Bridge Road
Open to traffic

Lupus Bridge (Moniteau County, Missouri)
Built 1894 by the Kansas City Bridge & Iron Co
Through truss bridge formerly over Splice Creek on Ridge Road (CR 4) near Lupus
Relocated to private property next to creek

Luraville Swing Bridge (Suwannee County, Florida)
Built 1907; Replaced by new bridge in 1947
Lost swing bridge over Suwannee River on unnamed road in Luraville
Replaced by new bridge

Lusk Creek Bridge (Pope County, Illinois)
Built 1934
Through truss bridge over Lusk Creek on Eddyville Road (FAS 930), southeast of Eddyville, 3.25 mi. southeast of Eddyville
Open to two-lane traffic

Luther's Mill Bridge (Bradford County, Pennsylvania)
Built 1912 by the Owego Bridge Co., rehabilitated 1968
Through truss bridge over Sugar Creek on TR 552
Open to traffic

LV - Delaware River Bridge (Northampton County, Pennsylvania)
Built 1901
Abandoned pratt deck truss bridge over Delaware River on Railroad
Abandoned

LV - Delaware River Bridge (S) (Northampton County, Pennsylvania)
(Main design: Whipple deck truss)
Built 1876; Replaced in mainlline service 1901, but remained as third track; Removed ?
Lost Whipple deck truss bridge over Delaware River on Lehigh Valley Railway
Removed

LV - Lehigh River Bridge (Northampton County, Pennsylvania)
(Main design: Pratt deck truss)
Built 1896-9
Abandoned Pratt deck truss bridge over Lehigh Rive on Lehigh Valley Railway
Abandoned

LV - Newark Bay Bridge (Old) (Essex County, New Jersey)
Built 1913, replaced 1930
Lost Pratt through truss bridge over Newark Bay on Lehigh Valley RR
Replaced by a new bridge

LV - Towanda Bridge (Old) (Bradford County, Pennsylvania)
Built 1877, Replaced 1906
Lost Pratt through truss bridge over Susquehanna River on Lehigh Valley Railroad
Replaced by a new bridge

LVT - Aineyville Viaduct (Lehigh County, Pennsylvania)
Built 1913; Removed 1954
Lost Pratt through truss bridge over Trout Creek on Lehigh Valley Transit Co.
Removed

LVT - Race Street Bridge (Lehigh County, Pennsylvania)
Built 1892; Replaced 1954
Lost Pratt through truss bridge over Lehigh River on Lehigh Valley Transit Co.
Removed

Lycoming Creek Bridge (Lycoming County, Pennsylvania)
Pony truss bridge with steel arch reinforcement over Lycoming Creek on TR 860
Open to traffic

Lye Creek Bridge (Marion County, Indiana)
Built in Montgomery County in 1879- moved to Indianapolis over Central Canal
Bedstead pony truss bridge over Central Canal in Indianapolis
Open to pedestrians

Lye Creek CR 475E Bridge (Montgomery County, Indiana)
Built in 1879 by the Wrought Iron Bridge Company; moved to indianapolis in 1999
Pony truss bridge over Lye Creek on CR 475 East,now relocated to Indianapolis.
Relocated and road vacated at bridge site.

Lye Creek CR 500N Bridge (Montgomery County, Indiana)
Built ca. 1925
Lost Pratt half-through truss bridge over Lye Creek on County Road 500 North
Replaced by a new bridge

Lye Creek CR 600N Bridge (Montgomery County, Indiana)
Built ca. 1900; replaced 1992
Lost through truss bridge over Lye Creek on CR 600 N
Replaced by new bridge

Lye Creek CR 800N Bridge (Montgomery County, Indiana)
Built 1894
Lost Bedstead Pratt pony truss bridge over Lye Creek on County Road 800 North
Replaced by a new bridge

Lyell Ford Bridge (Marion County, Missouri)
Built 1898 by the Kansas City Bridge Co.
Lost through truss bridge over South Fabius River on CR 117
Destroyed by flooding Sunday, June 28, 2015 after 6pm.

Lyndon Bridge (Whiteside County, Illinois)
(Main design: Pennsylvania through truss)
Built 1894 by Keefers & Wyncoop; span added 1912; Closed in 1980; saved from demolition 1998
Pennsylvania through truss bridge over Rock River on 6th Avenue (Lyndon Road)
Open to pedestrians

Lynn Line Road Bridge (Wood County, Wisconsin)
Built 1906
Pony truss bridge over East Fork Black River on Lynn Line Road
Closed to all traffic

Lyon Creek Bridge (Dickinson County, Kansas)
Built Ca. 1900, according to the Kansas State Historical Society
Abandoned pratt through truss bridge over Lyon Creek on 1600 Avenue
Derelict/abandoned

Lytle Fork Bridge (Scott County, Kentucky)
Abandoned pony truss bridge over Lytle Fork
Abandoned

M - 104 Bridge (Older) (Ottawa County, Michigan)
Replaced 1924
Pratt through truss bridge over Spring Lake on M - 104
No longer exists

M&B - Steven Branch Bridge (Washington County, Vermont)
Built for the Central Vermont Railroad; Abandoned 1958
Pratt through truss with all verticals bridge over Steven Branch on Abandoned Montpelier & Barre (Central Vermont) Railroad
Open to pedestrians / snowmobiles only

M&NA - White River Bridge (White County, Arkansas)
Lost Through truss bridge over White River on Missouri & North Arkansas RR
Removed

M&StL - Cottonwood River Bridge (Brown County, Minnesota)
Built 1899, Removed in the 1970s
Pratt deck truss bridge over Cottonwood River on Former C&NW Railway
Removed

M&StL - Eddyville Rail Bridge (Old) (Monroe County, Iowa)
Built 1884; Replaced 1926
Lost Pratt through truss bridge over Des Moines River & Muchakinock Creek on Minneapolis & St. Louis Railway
Replaced by a new bridge

M&StL - Keithsburg Lift Bridge (Mercer County, Illinois)
Built 1909; Abandoned 1971; Partially lost to fire in 1981
Vertical lift bridge that carried the M&StL across the Mississippi River at Keithsburg
Abandoned

M&StL - Spencer Bridge (Clay County, Iowa)
Built 1899; Removed 1936
Lost Pratt through truss bridge over Little Sioux River on Minneapolis & St. Louis Railway
Replaced by a new bridge

M&StL - Walnut Creek Bridge (Polk County, Iowa)
Built 1901; Removed ?
Lost Pratt through truss bridge over Walnut Creek on Minneapolis & St. Louis Railway
Removed

M&STL - Willow Creek Bridge (Cerro Gordo County, Iowa)
Lost pratt deck truss bridge over Willow Creek on Railroad
Replaced by a new bridge

Ma & Pa - Muddy Creek Bridge (York County, Pennsylvania)
Built 1900
Abandoned through truss bridge over Muddy Creek on Maryland & Pennsylvania Railroad
Derelict/abandoned

MacArthur Bridge (St. Louis, Missouri)
(Main design: Pennsylvania through truss)
Built 1907-1917 by the City of St. Louis to break the monopoly of the Terminal Railroad Association, which controlled the two other bridges at St. Louis and charged unreasonable tolls. Automobile deck closed to traffic in 1981.
Three-span through truss bridge over the Mississippi River in St. Louis, south of the Poplar Street Bridge
Open to railroad traffic only

Machia Road Bridge (Franklin County, Vermont)
Built 1928
2 span Pratt through truss bridge over Missisquoi River on C3006 in Highgate
Open to traffic

Mackelroy Creek Bridge (Richardson County, Nebraska)
Built 1904
Pony truss bridge over Mackelroy Creek on 37th Street
Closed to all traffic

Mackville Road Bridge (Lincoln County, Missouri)
Built 1936; replaced 2004
Lost through truss over North Fork Cuivre River on Mackville Road just beyond the end of Route K at Briscoe
Replaced by modern bridge

Macon Bridge (Macon County, Missouri)
Lost through truss bridge on a city street in Macon
No longer exists

Macoupin Creek Bridge (Macoupin County, Illinois)
Pony truss bridge over Macoupin Creek on Lake Catatoga Road south of Macoupin
Closed

Macoupin Creek Bridge - Coops Mound Rd (Macoupin County, Illinois)
Pony truss bridge over Macoupin Creek on Coops Mound Rd, 2 mi. south of Standard City
Intact but closed to all traffic

Maddox Creek CR 115 Bridge (Van Wert County, Ohio)
Built 1900
Pony truss bridge over Maddox Creek on CR 115 (Keltner Road)
Road closed, bridge removed

Maddox Mill Bridge (Whitfield County, Georgia)
Built sometime around 1915, abandoned in the 1930's or 40's when Chatsworth Highway was moved to it's present alignment
Abandoned pratt pony truss bridge over Coahulla Creek on old alignment of Chatsworth Highway / SR 52
Abandoned on private property

Madison Ave. White River Bridge (Madison County, Indiana)
(Main design: Baltimore through truss)
Lost through truss bridge over White River on Madison Ave. in Anderson
Replaced by new bridge

Madison Railroad - Big Creek Bridge (Jefferson County, Indiana)
Pratt deck truss bridge over Big Creek on Madison Railroad
Replaced by a new bridge

Madison Railroad - Graham Creek Bridge (Jennings County, Indiana)
Pratt deck truss bridge over Graham Creek on Madison Railroad
Open to traffic

Madison Railroad - Vernon Fork Muscatatuck River Bridge (Jennings County, Indiana)
Built ca.1890's
Pratt deck truss bridge over Vernon Fork Muscatatuck River in Vernon
Open to traffic

Madison Street Bridge (1st) (Multnomah County, Oregon)
Built 1891 Rebuilt into second bridge 1900
Lost Pratt through truss swing bridge over Willamette river on Madison Ave now Hawthorne street.
Replaced by a new bridge

Madison-Milton Bridge (Jefferson County, Indiana)
(Main design: Warren through truss)
Built 1928-29; rehabilitated 1997, imploded August 2013
Cantilevered through truss bridge over Ohio River on US 421 between Madison, IN, and Milton, KY
All main spans demolished.

Madisonville Bridge (Ralls County, Missouri)
Built 1893 by St. Louis Bridge & Iron Co.; relocated to a nearby field in 2005
Through truss bridge formerly over Spencer Creek on Madisonville Road just beyond the end of Route C, but now located in a field just north of its old location
Relocated to a nearby field after being purchases by a local couple. Replaced by new bridge

Magnolia Garden Bridge (Orleans Parish, Louisiana)
Built in 1800s; moved to present location in 1909; restored for pedestrian use in 1989
Pratt through truss bridge over Bayou St. John at Harding Drive
Open to pedestrians

Magnum Through Truss (Eastland County, Texas)
Pratt through truss bridge over South Fork Leon River on Road
Open to authorized vehicles only

Mahalasville Road Bridge (Morgan County, Indiana)
Built ca. 1920 in Morgan County: Larger span moved to Yorktown in Delaware County after smaller span was destroyed by a fallen tree.
Relocated pony truss bridge over Buck Creek
Open to pedestrians only

Mahanoy Creek Bridge (Northumberland County, Pennsylvania)
Built 1902 by the King Bridge Company
Through truss bridge over Mahanoy Creek on TR 377
Closed to all traffic

Mahin Road Bridge (Pettis County, Missouri)
Built ca. 1920
Pony truss bridge over Long Branch Muddy Creek on Mahin Road
Open to traffic

Mahoning Avenue Double Decker Viaduct (Mahoning County, Ohio)
Built 1903
Through truss bridge over Mill Creek on CR 319
Replaced by a new bridge

Mahoning Creek Bridge (Indiana County, Pennsylvania)
Built 1900 by Nelson & Buchanan
Pony truss bridge over Mahoning Creek on PA 4026
Demolished and replaced.

Main Avenue Bridge (Wayne County, Pennsylvania)
Lost Pratt through truss bridge over Lackawaxen River on Main Ave.
No longer exists

Main Avenue Bridge (Old) (Cuyahoga County, Ohio)
Built 1860
Lost Through truss bridge over Cuyahoga River on Route 2 Main Avenue
Replaced by a new bridge

Main Channel Bridge (Sanders County, Montana)
Built 1911
Pratt deck truss bridge over Clark Fork on Pedestrian Traffic
Open to traffic

Main Street Bridge (Keweenaw County, Michigan)
Built 1909 by the Joliet Bridge and Iron Co.
Pony truss bridge over Eagle River on West Main in Eagle River
Open to pedestrians

Main Street Bridge (Crawford County, Pennsylvania)
Built 1937; rehabilitated 1980
Pratt through truss bridge over French Creek on US 6/US 19
Open to traffic

Main Street Bridge (Warren County, Indiana)
Built 1886, replaced in 1924
Lost Through truss bridge over Wabash River on Main Street at Attica
Replaced by a new bridge with spans being relocated to various locations in Fountain County.

Main Street Bridge (Clay County, Iowa)
(Main design: Pennsylvania through truss)
Built 1889, span added 1901, Replaced 1915
Lost Pennsylvania through truss bridge over Little Sioux River on Main Street (Now Renamed)
Replaced by a new bridge

Main Street Bridge (Wright County, Iowa)
Replaced 1977
Lost Pratt through truss bridge over Iowa River on Main Street
Replaced by a new bridge

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