There are 8,206 bridges in this category · Only showing 6,161 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.

L&N - Toccoa River Bridge (Fannin County, Georgia)
Pratt through truss bridge over Toccoa River on the abandoned Louisville & Nashville Railroad Murphy branch
Abandoned 1982

L&N - Valley River Bridge (Cherokee County, North Carolina)
6 panel Pratt through truss bridge over Valley River on abandoned L&N Railroad
Abandoned

La Crosse Wagon Bridge (La Crosse County, Wisconsin)
(Main design: Howe through truss)
Built 1891, Approach span collapsed 1935; Replaced 1939
Lost Howe through truss bridge over Mississippi River on Road
Replaced by a new bridge

La Harpe Creek Bridge (Hancock County, Illinois)
Built 1901; Collapsed September 27, 2012
Lost pony truss bridge over La Harpe Creek on E CR1950, 2.5 mi. west of Fountain Green
Collapsed by an overweight truck.

La Moine River Bridge (Hancock County, Illinois)
Built 1916
Pratt through truss bridge over La Moine River on E CR1720, 5.5 mi. southwest of Fountain Gr
Open to traffic

La Moine River Bridge (Hancock County, Illinois)
Built 1901, Replaced by a Concrete Ford
Pony truss bridge over La Moine River on E CR2200, 2.0 mi. southeast of Lacrosse
Replaced by a ford.

La Porte City Bridge (Black Hawk County, Iowa)
Built 1894
Lost Pratt through truss bridge over Wolf Creek on Road
Replaced by a new bridge

La Russell Bridge (Lawrence County, Missouri)
Built 1898 by the Kansas City Bridge Co.
Through truss bridge over Spring River on CR 1000, northeast of La Russell
Open

Labadie Bottom Road Bridge (Franklin County, Missouri)
Built 1901 by Stupp Brothers Bridge & Iron Co.; later moved to this location
Through truss bridge over Labadie Creek on Labadie Bottom Road
Replaced by a new bridge and relocated. It has been repainted and appears to be in use.

Labette Creek Bridge (Neosho County, Kansas)
Bedstead truss bridge over Labette Creek on 20th Road (Truncated by dam)
Intact but closed to all traffic

Labo Del Rio Bridge (Archuleta County, Colorado)
Built 1913 by the Missouri Valley Bridge Co.
Through truss bridge over Piedra River on CR F50
Open to one-lane traffic

Lacy Creek Bridge (Washington County, Oklahoma)
Built ca. 1930
Pony truss bridge over Lacy Creek on N4030
Open to traffic

Ladd Bridge (Bartow County, Georgia)
Abandoned through truss bridge over Petit Creek just off GA 113 in Cartersville
Abandoned with deck removed

Lafayette Street Bridge (1st) (Hillsborough County, Florida)
Built 1889; Replaced 1895
Lost Pratt through truss bridge over Hillsborough River on Lafayette Street
Replaced by a new bridge

Laflin Bridge (Bollinger County, Missouri)
Built 1908 by Stupp Brothers Bridge & Iron Co.; closed to traffic Dec. 15, 2003; main span demolished Apr. 13, 2005; replacement bridge opened Jan. 2006
Lost through truss bridge over Crooked Creek southwest of Laflin on CR 408, just beyond the end of Route U
Demolished to make way for replacement bridge

LaGrange Bridge (Lewis County, Missouri)
Built 1899 by the Massillon Bridge Co.
Through truss bridge over Wyaconda River on Sunflower Street (CR 552)
Open to one-lane traffic

Lake Britton Bridge (Shasta County, California)
Built 1938, rehabilitated 2010
Cantilevered deck truss bridge over Lake Britton on CA 89
Open to traffic

Lake Creek Bridge (Venango County, Pennsylvania)
Built 1889
Pony truss bridge over Lake Creek on TR 372 (Woolen Mills Road) in Cooperstown
Replaced by a new bridge

Lake Ditch Bridge SR 42 (Morgan County, Indiana)
Built ca. 1915; Replaced 1991
Lost Pratt pony truss bridge over Lake Ditch on SR 42
Replaced by a new bridge

Lake Fork Creek Bridge (Logan County, Illinois)
Abandoned pony truss bridge over Lake Fork Creek
Derelict/abandoned with deck missing

Lake James Spillway Bridge (McDowell County, North Carolina)
Constructed in 1919 across the Lake James Spillway and replaced by a new bridge downstream in 1981 when dam was rehabilitated by Duke Energy
Lost Pratt through truss bridge over Lake James Spillway on NC 126
Replaced by a new bridge

Lake Louise State Park Bridge (Mower County, Minnesota)
Built 1910
Through truss bridge over Little Iowa River on State Park Road
Replaced by a truss bridge imported from Meeker County

Lake Shore Drive Drawbridge (Cook County, Illinois)
Built 1937
Double-deck bascule bridge over Main Branch Chicago River on Lake Shore Drive in Chicago
Open to traffic

Lake Vermilion Bridge (Vermilion County, Illinois)
Built 1925, replaced in 1978
Lost Through truss bridge over channel of Lake Vermilion (former North Fork Vermilion River) on Denmark Road in Danville
Replaced by new bridge

Lake Wilson Bridge (Russell County, Kansas)
Pony truss bridge over a branch of Lake Wilson on Reservoir Road(?)
Closed to traffic as of 1997

Lake Winnisquam New England Southern Railroad Bridge (Belknap County, New Hampshire)
Pratt deck truss bridge over Lake Winnisquam on New England Southern Railroad
Open to traffic

Lakehurst Bridge (Jackson County, Iowa)
Pratt through truss bridge over Maquoketa River on Road


Lakewood Park Bridge (Saline County, Kansas)
Built 1887 by the Missouri Valley Bridge & Iron Works
Through truss bridge over Smoky Hill River on Lakewood Drive in Salina
Relocated to Lakewood Park Middle School where it serves as a pedestrian bridge.

Lambeth Bridge (Laclede County, Missouri)
Built 1908 by the Illinois Steel Bridge Co.; rehabilitated 1987; closed to traffic 2007
Three-span through truss bridge over Osage Fork on Tulsa Road
Open with a 3 Ton limit

Lambs Creek Old IN 67 Bridge (Morgan County, Indiana)
Built 1893 by the Wrought Iron Bridge Co.
Through truss bridge over Lambs Creek on Old IN 67
Open to traffic

Lamington Road over Rockaway Creek Bridge west (Hunterdon County, New Jersey)
Possibly strengthened 2000
"Lost" through truss bridge over Rockaway Creek on Lamington Road
FOUND: still exists, surrounded by modern girder span

Lancaster High Bridge (Schuyler County, Missouri)
Lost through truss bridge over CB&Q Railroad tracks in Lancaster
Demolished

Landenberg Road Bridge (Chester County, Pennsylvania)
Built 1899 by the Schuylkill Bridge Co.; Closed 1999; Rebuilt 2010
Pony truss bridge over East Branch White Clay Creek on Landenberg Road
Open to all traffic

Landers Corners Road Bridge (Cortland County, New York)
Built 1891; rehabilitated 1985
Steel through arch bridge over Otselic River on Landers Corners Road
Open to traffic

Landing Lane Bridge (Middlesex County, New Jersey)
Built 1895; Reconstructed 1992; Trusses and deck replaced 1995
Through truss bridge over Raritan River on Landing Lane (609)
All but piers and abutmrnts replaced in 1995

Landis Avenue Bridge (Cumberland County, New Jersey)
Lost Pratt pony truss bridge over Maurice River on Landis Avenue
Replaced by a new bridge

Landis Road Bridge (Jones County, Iowa)
Built 1909
Through truss bridge over Wapsipinicon River on Landis Road
Open to traffic

Landon Nature Trail - 110 Mile Creek Bridge (Future Name) (Osage County, Kansas)
Abandoned through truss bridge over 110 Mile Creek on Abandoned Railroad Grade
Abandoned but will probably be incorporated into a trail.

Langdon Bridge (Bedford County, Pennsylvania)
Built 1889 by the King Bridge Co.
Through truss bridge over Yellow Creek on TR 655
Open to traffic

Lankford Mill Road Bridge (Bedford County, Virginia)
Built 1932. Posted 3 tons
Pony truss bridge over Big Otter River on Lankford Mill Road
Open to traffic

Laramie River Bridge (Platte County, Wyoming)
Built in 1913; replaced by a culvert
Lost pony truss bridge over East Fork Laramie River on Palmer Canyon Road (CR 204)
Replaced by a new bridge

Laramie River CR 740 Bridge (Albany County, Wyoming)
Built 1926 on Old US 30; relocated ca. 1932; replaced 1993
Lost Pratt pony truss bridge over Laramie River on CR 740
Replaced by new bridge

Larimore Road Bridge (Knox County, Ohio)
Pony truss bridge over North Fork Licking River on Larimore Road (TH 176)
Replaced by a new bridge

Larman Mill Road Bridge (Fayette County, Pennsylvania)
Built 1918
Pony truss bridge over Georges Creek on Larman Mill Road
Open to traffic

Larrick Park Bridge (Norton County, Kansas)
Built 1906, relocated to the park in 2010.
Bedstead Pratt pony truss bridge stored in park
In storage

LARy - 4th Street Trolley Bridge (Los Angeles County, California)
Built 1898; Replaced 1930
Lost Pratt through truss bridge over Los Angeles River on Los Angeles Railway
Replaced by a new bridge

Las Pilitas Road Bridge (San Luis Obispo County, California)
Built 1917
Through truss bridge over Salinas River on Las Pilitas Road
Closed to vehicles, roadway has been realigned with new bridge

Lathers Road Bridge (Rock County, Wisconsin)
Built 1887 by Wisconin Bridge & Iron
Through truss bridge over Turtle Creek on Lathers Road
Open to traffic, weight restrictions in place

Lattas Creek Bridge (Greene County, Indiana)
Built 1917
Pony truss bridge over Lattas Creek on CR 250 West
Open to traffic

Laughery Creek CR 200W Bridge (Ripley County, Indiana)
Built ca.1900; replaced in 1991
Lost Pratt through truss bridge over Laughery Creek on CR 200W
Replaced by new bridge

Laura Bradley Park Bridge (Peoria County, Illinois)
Built 1898
Deck truss bridge over Dry Run Creek on a park road within Laura Bradley Park in Peoria
Closed to all traffic

Laurel River Bridge (Laurel County, Kentucky)
Built 1925
Deck truss bridge over Laurel River on Old KY 25
Open to traffic

Lawrence Bridge (Winneshiek County, Iowa)
Built 1880 by the Wrought Iron Bridge Co.
Closed pony truss bridge over Little Turkey River on 330th Avenue in Jackson Junction
Privately owned

Lay Bridge (Lewis County, Missouri)
Built 1918 by the Dildine Bridge Co.
Through truss bridge over Middle Fabius River on Gingko Street (CR 504)
Open to traffic

Layton Bridge (Fayette County, Pennsylvania)
Built 1892; rehabilitated 1984
Through truss bridge over Youghiogheny River on PA 4038
Open to traffic

Lazy J Campground Bridge (Transylvania County, North Carolina)
Pratt pony truss bridge over French Broad River on a driveway
Open to traffic

LC - Catawba River Trestle (Lancaster County, South Carolina)
Replaced prior bridge after 1916 flood, was moved here from another location
Bridge over Catawba River on Lancaster and Chester Railway
Open to railroad traffic

Le Grand Truss Bridge (Tama County, Iowa)
Built 1896; rehabilitated 1930 Lost in flooding in 2008
Lost through truss bridge over Iowa River on Abbott Avenue, piers remain
Destroyed in 2008 flooding

Lea Bridge (Bradley County, Tennessee)
Built 1886; Demolished 1988
Lost Pony truss bridge over Candies Creek on Old Georgetown Street
Replaced by a new bridge; Moved to park in Hamilton County

Lease Bridge (Champaign County, Illinois)
Built 1920, replaced 1993
Lost Pony truss bridge over Saline Branch Drainage Ditch on TR 181A
Replaced by new bridge

Leatherwood Bridge (Hickman County, Tennessee)
Built 1918; Bypassed by new bridge in 1987
Abandoned Pratt through truss bridge over Duck River
Abandoned

Leatherwood Creek Bridge CR 110 W (Parke County, Indiana)
Built ca. 1920; Replaced 1986
Lost Pratt pony truss bridge over Leatherwood Creek on CR 110 W
Replaced by a new bridge

Leavenworth Terminal Bridge (Leavenworth County, Kansas)
Built 1892-94 under the direction of George S. Morison for about $300,000; dedicated Jan. 2, 1894
Lost through truss swing bridge over the Missouri River on Chicago & North Western Railway at Leavenworth
Removed

Lebanon Valley Rail Trail - Swatara Creek Bridge (Lebanon County, Pennsylvania)
Pratt through truss bridge over Swatara Creek on Lebanon Valley Rail Trail
Being converted to trail use.

Lecompton-Perry Bridge (Douglas County, Kansas)
(Main design: Parker through truss)
Built 1899; Damaged due to floods in 1903, 1905, & 1908; 3 spans lost to ice jam 1910; Razed 1969
Lost Parker through truss bridge over Kansas River on Halderman Street.
Replaced by a new bridge a few hundred yards downstream.

Lee Creek Road Bridge (Crawford County, Arkansas)
Built 1898; one span replaced in 1930; bypassed in 1995
Abandoned through truss bridge over Lee Creek on Lee Creek Road (West Rena Road), just north of I-40
Closed to all traffic

Leedle Mill Road Bridge (Rock County, Wisconsin)
Built 1916
Through truss bridge over Badfish Creek on Leedle Mill Road
Closed to all traffic

Leeper Ford Bridge (Greene County, Missouri)
Built 1930 using recycled material; replaced 1991
Lost through truss over Sac River on Farm Road 34 southwest of Walnut Grove, near the Dade County line
Replaced by a concrete bridge

Leet Street Bridge (Allegheny County, Pennsylvania)
Originally built 1886 by the Morse Bridge Co. at Lawrence Junction; relocated here in 1904
Through truss bridge over Norfolk Southern Railroad and PA 65 on Leet Street in Leetsdale
Intact but closed to all traffic

Left Branch AR 123 Bridge (Newton County, Arkansas)
Lost through truss bridge over Left Branch Big Creek on AR 123
Replaced by new bridge in 2000

Lehigh River Norfolk Southern Bridge (Northampton County, Pennsylvania)
Two 7-panel Pratt through trusses
Open to traffic

Lehigh Valley - Coxton Bridge (Luzerne County, Pennsylvania)
Built in 1926, abandoned ca. 1980; demolition begun Oct. 2017
Abandoned Pratt through truss bridge over North Branch Susquehanna River on Abandoned Lehigh Valley Railroad
Derelict/abandoned for decades; demolition begun Oct. 2017

Lenon Bridge (Guthrie County, Iowa)
Replaced 1965
Pratt through truss bridge over Raccoon River on Road
Replaced by a new bridge

Lenox Bridge (Dyer County, Tennessee)
Built 1917 by the Vincennes Bridge Co.; damaged by overweight load in 1978; dismanted 1985; relocated 1987-88
Pratt swing pony truss bridge, pin-connected, originally spanning Obion River on CR S8025 west of Lenox
Open to pedestrians only

Leon River Bridge (Coryell County, Texas)
Built 1904; Rehabilitated in 1994
Through truss bridge over Leon River on Leon Street in Gatesville
Intact but closed to all traffic

Leon River Bridge CR 210 (Hamilton County, Texas)
Bypassed by new bridge in 2000
Abandoned through truss bridge over Leon River on CR 210
Southern approach completely washed away and truss has collapsed into river.

Leon River CR 106 Bridge (Hamilton County, Texas)
Bypassed by new bridge.
Abandoned through truss bridge over Leon River on CR 106
Abandoned

Levans Iron Bridge (Lebanon County, Pennsylvania)
Built 1904; rehabilitated 1960
Through truss bridge over Little Swatara Creek
Open to traffic

Levee Road Bridge (Hancock County, Illinois)
Built 1904
Pony truss bridge over Drainage Ditch on Levee Road (Middle Rd) in Warsaw
Open to traffic

Levy Road Bridge (Tazewell County, Illinois)
(Main design: Pratt through truss)
Built 1907
Pratt through truss bridge over Mackinaw River on Levy Road northwest of Hopedale
Derelict/abandoned

Lewellen State Aid Bridge (Garden County, Nebraska)
Built 1927
Pony truss bridge over North Platte River on FAS 1265
Open to traffic

Lewis & Clark Bridge (Cowlitz County, Washington)
Built 1929; rehabilitated 2003
Cantilevered through truss bridge over Columbia River on WA 433 at Longview
Open to traffic

Lewis Bridge (Indiana County, Pennsylvania)
Built ca. 1895
Through truss bridge over Little Mahoning Creek on TR 399
Demolished and replaced.

Lewis Bridge (Keya Paha County, Nebraska)
Built 1922
Truss bridge over Keya Paha River on a county road
Open to traffic

Lewis Mill Bridge (Daviess County, Missouri)
Completed Oct. 3, 1892, by the St. Joseph Bridge & Iron Co.; replaced 1989
Lost through truss over Grand River on CR 570 (July Avenue) west of Jameson, beyond the end of Route OO
Replaced by a concrete bridge

Lewis Street Bridge (Humboldt County, Iowa)
Built 1906, closed in the 70s, demolished 1981
Lost two-span through truss bridge over West Fork Des Moines River on Lewis Street in Humboldt
No longer exists

Lewis Street Swing Bridge (Scott County, Minnesota)
(Main design: Through truss)
Built in the 1880s, requested for scrap in 1942 due to WWII
Lost Through truss bridge over Minnesota River on Lewis Street
Removed but not replaced

Lewistown Road Bridge (1st) (Mifflin County, Pennsylvania)
Built ca. 1890; expanded with additional truss to carry Lewistown & Reedsville Electric Railway in 1902, replaced by concrete arch span 1924.
Lost Pratt through truss bridge over Juniata River
Replaced by a new bridge

Liberty Mills Bridge (Wabash County, Indiana)
Built ca. 1890
Through truss bridge over Eel River on 1st St. in Liberty Mills.
Closed

Liberty Road Bridge (DeKalb County, Missouri)
Built 1894 by the Dildine Bridge Co.
Pony truss bridge over North Fork Lost Creek on Liberty Road
Open to traffic on an unmaintained road

Libertyville Bridge (Lake County, Illinois)
Built 1921 as the western span of the US51 Kaskaskia River Bridge at Vandalia, Relocated here 1962. Replaced with trusses reused as decorations in 1990
Pratt through truss bridge over Desplaines River on Rockland Road
Closed

Lick Creek Bridge (Greene County, Tennessee)
Built 1925; replaced 2005
Lost pony truss bridge over Lick Creek on Crumley Road
Demolished to make room for replacement bridge

Lick Creek Bridge (Orange County, Indiana)
Abandoned Pratt through truss bridge over Lick Creek just off of US150
Was on an private drive that is now abandoned

Lick Creek Bridge (Owen County, Indiana)
Abandoned pony truss bridge over Lick Creek on abandoned county road
Derelict/abandoned

Lick Log Creek Bridge (Bollinger County, Missouri)
Built 1900 at Zalma, relocated ca. 1930 after the new Zalma Bridge was constructed; bypassed by new truss bridge in 1995
Derelict through truss over Lick Log Creek just south of Gipsy Bridge on CR 736
Abandoned with portions of deck missing, replaced by new truss bridge

Lickford Branch Road Bridge (Harrison County, Indiana)
Built ca. 1920; rehabilitated 1989
Through truss bridge over Indian Creek on Lickford Branch Road
replaced

Lickskillet Bridge (Logan County, Kentucky)
Built 1880 by the Penn Bridge Works; replaced 1990 and later relocated to a city park
Pratt pony truss bridge in Auburn Park
Open to traffic going through the park

Light Plant Bridge (Barton County, Missouri)
Built 1926 by the Concrete & Steel Construction Co.; replaced 2003
Through truss bridge formerly over Muddy Fork Spring River on NE 15th Lane
Now sitting on private property just south of the original location

Lightning Creek Bridge (Bonner County, Idaho)
Built 1939, Replaced 2010
Lost Pratt through truss bridge over Lightning Creek on ID 200 in Clark Fork
Lost

Ligon Bridge (Spartanburg County, South Carolina)
Built 1930; rehabilitated 1982, replaced 2015
Through truss bridge over Enoree River on S-42-893
Replaced by a new bridge

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