There are 9,308 bridges in this category · Only showing 7,320 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.
Kreitz Road Bridge (Crawford County, Pennsylvania)
Built 1895 by Penn Bridge Co.; demolished 2010Lost through truss bridge over Little Conneautte Creek on TR 899 (Kreitz Road)Demolished and replaced.
KRL - Shenango River Bridge (Lawrence County, Pennsylvania)
(Main design: Whipple through truss)Constructed from August 1901-02 by the BR&P, B&O and P&LE.Whipple and Pratt through truss bridge over Shenango River on the New Castle Industrial Railroad.
Kubli Road Bridge (Moniteau County, Missouri)
Built ca. 1910Lost through truss bridge over North Moreau Creek on Kubli Road, southeast of CaliforniaReplaced by a new bridge
Kuhl Road Bridge (Hunterdon County, New Jersey)
Built 1936Pony truss bridge over a branch of Neshanic River on Kuhls RoadOpen to traffic
Kunkel Mill Bridge (Holt County, Missouri)
Built 1919 by the Kansas City Bridge Co.Pony truss bridge over Kimsey Creek on CR 233Open to traffic
Kuntz Bridge (Callaway County, Missouri)
Built 1909 by Stupp Brothers Bridge & Iron Co.; replaced 2006Lost through truss bridge over Cedar Creek on CR 397Replaced by a new bridge
KY 1677 Buck Creek Bridge (Pulaski County, Kentucky)
Built 1898 by the Champion Bridge Co: Replaced 1981-1982 by the R.R. Dawson Bridge Co.Lost Pratt through truss bridge over Buck Creek on KY 1677Replaced by new bridge
KY 2127 Bridge (Daviess County, Kentucky)
Lost Pratt through truss bridge over Panther Creek on KY 2127Replaced by a new bridge
KY55 Salt River Bridge (Spencer County, Kentucky)
Built 1932; replaced 2016Lost Pratt through truss bridge over Salt River on KY 55 in TaylorsvilleReplaced by a new bridge
KY644 Levisa Fork Bridge (Lawrence County, Kentucky)
Built ?; One span built 1904 by the King Bridge Co.; Converted to road use after 1914; rehabilitated 1970Through truss bridge over Levisa Fork of Big Sandy on KY 644Open to traffic
KY773 Little Sandy River Bridge #1 (Carter County, Kentucky)
Built 1913; rehabilitated 1964; Removed 2020Through truss bridge over Little Sandy River on alignment of former Eastern Kentucky Railroad (now KY 773)Replaced by a new bridge
KY773 Little Sandy River Bridge #2 (Carter County, Kentucky)
Built 1913; rehabilitated 1964; Removed 2020Through truss bridge over Little Sandy River on alignment of former Eastern Kentucky Railroad (now KY 773)Replaced by a new bridge
KYLE - Republican River Bridge (Cloud County, Kansas)
Originally on a Missouri Pacific linePratt through truss bridge over Republican River on the Kyle Railroad, northwest of ConcordiaSouth truss is intact, north portion of span has been rebuilt as of 8.26.2020.
L&HR - Delaware River Bridge (Old) (Northampton County, Pennsylvania)
Built 1899 using some second-hand parts; Replaced 1907Lost Pratt through truss bridge over Delaware River on Central Railroad of New JerseyReplaced by a new bridge
L&I - Louisville-Anchorage Bridge (Jefferson County, Kentucky)
Lost Pratt through truss bridge over Ridge Court,Louisville and Nashville Railroad, KY 146 on Louisville & Interurban RailroadRemoved but not replaced
L&N - Danville Swing Bridge (Benton County, Tennessee)
(Main design: Through truss)Built in 1932; replaced in ?Lost Through truss bridge over Tennessee River / Kentucky Lake on Louisville & Nashville RailroadReplaced by a new bridge
La Crosse Wagon Bridge (La Crosse County, Wisconsin)
(Main design: Howe through truss)Built 1891, Approach span collapsed 1935; Replaced 1939Lost Howe through truss bridge over Mississippi River on RoadReplaced by a new bridge
La Harpe Creek Bridge (Hancock County, Illinois)
Built 1901; Collapsed September 27, 2012Lost pony truss bridge over La Harpe Creek on E CR1950, 2.5 mi. west of Fountain GreenCollapsed by an overweight truck.
La Moine River Bridge (Hancock County, Illinois)
Built 1916Pratt through truss bridge over La Moine River on E CR1720, 5.5 mi. southwest of Fountain GrOpen to traffic
La Moine River Bridge (Hancock County, Illinois)
Built 1901, Replaced by a Concrete FordPony truss bridge over La Moine River on E CR2200, 2.0 mi. southeast of LacrosseReplaced by a ford.
La Porte City Bridge (Black Hawk County, Iowa)
Built 1894Lost Pratt through truss bridge over Wolf Creek on RoadReplaced 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 RussellOpen
La Valle Bridge (Sauk County, Wisconsin)
Lost Through truss bridge over Baraboo River on Center Street in La ValleReplaced by a new bridge
LA&W - Hackett Mills Bridge (Androscoggin County, Maine)
Lost Pratt through truss bridge over Little Androscoggin River on Auburn, Mechanic Falls & Norway Street RailwayReplaced by a new bridge
Labadie Bottom Road Bridge (Franklin County, Missouri)
Built 1901 by Stupp Brothers Bridge & Iron Co.; later moved to this locationThrough truss bridge over Labadie Creek on Labadie Bottom RoadReplaced 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
Labette Creek Bridge (Labette County, Kansas)
Built 1903Double span Pratt pony truss bridge over Labette Creek, 4.0 mi. north and 2.5 mi. west of ChetopaClosed to all traffic
Labette Road Bridge (Franklin County, Kansas)
Abandoned pony truss bridge over Turkey Creek on Labette Road, 2.0 mi. north and 0.4 mi. east of RantoulDerelict/abandoned
Labo Del Rio Bridge (Archuleta County, Colorado)
Built 1913 by the Missouri Valley Bridge Co.Through truss bridge over Piedra River on CR F50Open to one-lane traffic
Lacy Creek Bridge (Washington County, Oklahoma)
Built ca. 1930Pony truss bridge over Lacy Creek on N4030Open to traffic
Ladd Bridge (Bartow County, Georgia)
Abandoned through truss bridge over Petit Creek just off GA 113 in CartersvilleAbandoned with deck removed
Lafayette Street Bridge (1st) (Hillsborough County, Florida)
Built 1889; Replaced 1895Lost Pratt through truss swing bridge over Hillsborough River on Lafayette StreetReplaced 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. 2006Lost through truss bridge over Crooked Creek southwest of Laflin on CR 408, just beyond the end of Route UDemolished 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 2010Cantilevered deck truss bridge over Lake Britton on CA 89Open to traffic
Lake Creek Bridge (Venango County, Pennsylvania)
Built 1889Pony truss bridge over Lake Creek on TR 372 (Woolen Mills Road) in CooperstownReplaced by a new bridge
Lake Ditch Bridge SR 42 (Morgan County, Indiana)
Built ca. 1915; Replaced 1991Lost Pratt pony truss bridge over Lake Ditch on SR 42Replaced by a new bridge
Lake Fork CR 2200E Bridge (Christian County, Illinois)
Built 1898Bedstead pony truss bridge over Lake Fork on CR 2200E, 2 mi. northwest of PanaOpen to traffic
Lake Fork Creek Bridge (Logan County, Illinois)
Abandoned pony truss bridge over Lake Fork CreekDerelict/abandoned with deck missing
Lake Fork Gunnison River Bridge (Gunnison County, Colorado)
Built ca. 1913; Replaced 1923Lost Pratt pony truss bridge over Lake Fork Gunnison River on HighwayReplaced by a new bridge
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 EnergyLost Pratt through truss bridge over Lake James Spillway on NC 126Replaced by a new bridge
Lake Louise State Park Bridge (Mower County, Minnesota)
Built 1910Through truss bridge over Little Iowa River on State Park RoadReplaced by a truss bridge imported from Meeker County
Lake Shore Drive Drawbridge (Cook County, Illinois)
Built 1937Double-deck bascule bridge over Main Branch Chicago River on Lake Shore Drive in ChicagoOpen to traffic
Lake Vermilion Bridge (Vermilion County, Illinois)
Built 1925, replaced in 1978Lost Through truss bridge over channel of Lake Vermilion (former North Fork Vermilion River) on Denmark Road in DanvilleReplaced 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
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 WorksThrough truss bridge over Smoky Hill River on Lakewood Drive in SalinaRelocated 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 2007Three-span through truss bridge over Osage Fork on Tulsa RoadClosed to traffic
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 67Open to traffic
Lancaster High Bridge (Schuyler County, Missouri)
Lost through truss bridge over CB&Q Railroad tracks in LancasterDemolished
Landenberg Road Bridge (Chester County, Pennsylvania)
Built 1899 by the Schuylkill Bridge Co.; Closed 1999; Rebuilt 2010Pony truss bridge over East Branch White Clay Creek on Landenberg RoadReplaced by a new bridge with original trusses as decorations
Landers Corners Road Bridge (Cortland County, New York)
Built 1891; rehabilitated 1985Steel through arch bridge over Otselic River on Landers Corners Road in Upper LisleOpen to traffic
Landing Lane Bridge (Middlesex County, New Jersey)
Built 1895; Reconstructed 1992; Trusses and deck replaced 1995Through 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 AvenueReplaced by a new bridge
Landis Road Bridge (Jones County, Iowa)
Built 1909Through truss bridge over Wapsipinicon River on Landis RoadOpen to traffic
Langdon Bridge (Bedford County, Pennsylvania)
Built 1889 by the King Bridge Co.Through truss bridge over Yellow Creek on TR 655Open to traffic
Lankford Mill Road Bridge (Bedford County, Virginia)
Built 1932. Posted 3 tonsPony truss bridge over Big Otter River on Lankford Mill RoadOpen to traffic
Laramie River Bridge (Platte County, Wyoming)
Built in 1913; replaced by a culvert 2017Lost pony truss bridge over East Fork Laramie River on Palmer Canyon Road (CR 204)Replaced by a new bridge
Laramie River Bridge (Albany County, Wyoming)
Built 1926; rehabilitated 1979; Replaced 1993Lost Half-hip Pratt pony truss bridge over Laramie River on CR 740Replaced by a 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 1918Pony truss bridge over Georges Creek on Larman Mill RoadOpen to traffic
Larrick Park Bridge (Norton County, Kansas)
Built 1906, relocated to the park in 2010.Bedstead Pratt pony truss bridge stored in parkIn storage
LARy - 4th Street Trolley Bridge (Los Angeles County, California)
Built 1898; Replaced 1930Lost Pratt through truss bridge over Los Angeles River on Los Angeles RailwayReplaced by a new bridge
Las Pilitas Road Bridge (San Luis Obispo County, California)
Built 1917Through truss bridge over Salinas River on Las Pilitas RoadClosed to vehicles, roadway has been realigned with new bridge
Lassiter Mill Bridge (Wake County, North Carolina)
Lost Pratt through truss bridge over Crabtree Creek on Old Lassiter Mill RoadRemoved but not replaced
Lattas Creek Bridge (Greene County, Indiana)
Built 1917Pony truss bridge over Lattas Creek on CR 250 WestReplaced by a new bridge
Laughery Creek CR 200W Bridge (Ripley County, Indiana)
Built ca.1900; replaced in 1991Lost Pratt through truss bridge over Laughery Creek on CR 200WReplaced by new bridge
Laughery Switch Bridge (Ripley County, Indiana)
Built ca. 1890Lost Pratt deck truss bridge over Laughery Creek on Right Of Way Road (Now SR 350)Replaced by a new bridge
Laura Bradley Park Bridge (Peoria County, Illinois)
Built 1898Deck truss bridge over Dry Run Creek on a park road within Laura Bradley Park in PeoriaClosed to all traffic
Laurel River Bridge (Laurel County, Kentucky)
Built 1925Deck truss bridge over Laurel River on Old KY 25Open 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 JunctionPrivately 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; railroad abandoned in 1931; rehabilitated 1984Through truss bridge over Youghiogheny River on PA 4038Open to traffic
Lazy J Campground Bridge (Transylvania County, North Carolina)
Pratt pony truss bridge over French Broad River on a drivewayOpen to traffic
LC - Catawba River Trestle (Lancaster County, South Carolina)
Replaced prior bridge after 1916 flood, was moved here from another locationBridge over Catawba River on Lancaster and Chester RailwayOpen to railroad traffic
Le Grand Truss Bridge (Tama County, Iowa)
Built 1896; rehabilitated 1930 Lost in flooding in 2008Lost through truss bridge over Iowa River on Abbott Avenue, piers remainDestroyed in 2008 flooding
Lea Bridge (Bradley County, Tennessee)
Built 1886; Demolished 1988Lost Pony truss bridge over Candies Creek on Old Georgetown StreetReplaced by a new bridge; Moved to park in Hamilton County
Leaf River Bridge (Ogle County, Illinois)
Lost Pratt pony truss bridge over Leaf RiverNo longer exists
Leander Roberts Bridge (Hancock County, Indiana)
Replaced 1994Lost through truss bridge over Sugar Creek on CR 700 NReplaced by new bridge
Lease Bridge (Champaign County, Illinois)
Built 1920, replaced 1993Lost Pony truss bridge over Saline Branch Drainage Ditch on TR 181AReplaced by new bridge
Leatherwood Bridge (Hickman County, Tennessee)
Built 1918; Bypassed by new bridge in 1987Abandoned Pratt through truss bridge over Duck RiverAbandoned
Leatherwood Creek Bridge CR 110 W (Parke County, Indiana)
Built ca. 1920; Replaced 1986Lost Pratt pony truss bridge over Leatherwood Creek on CR 110 WReplaced 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, 1894Lost through truss swing bridge over the Missouri River on Chicago & North Western Railway at LeavenworthRemoved
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 1969Lost 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 1995Abandoned through truss bridge over Lee Creek on Lee Creek Road (West Rena Road), just north of I-40Closed to all traffic
Lee's Bridge (Dale County, Alabama)
Abandoned pratt pony truss bridge over Choctawhatchee River on an abandoned alignment of AL 56Derelict/abandoned
Leechburg Bridge - Older (Westmoreland County, Pennsylvania)
Collapsed during demolition in 1935Lost Pratt deck truss bridge over Kiskiminetas RiverReplaced by a new bridge in 1935
Leedle Mill Road Bridge (Rock County, Wisconsin)
Built 1916Lost Pratt through truss bridge over Badfish Creek on Leedle Mill RoadReplaced by a new bridge
Leeper Ford Bridge (Greene County, Missouri)
Built 1930 using recycled material; replaced 1991Lost through truss over Sac River on Farm Road 34 southwest of Walnut Grove, near the Dade County lineReplaced by a concrete bridge
Leet Street Bridge (Allegheny County, Pennsylvania)
Originally built 1886 by the Morse Bridge Co. at Lawrence Junction; relocated here in 1904Through truss bridge over Norfolk Southern Railroad and PA 65 on Leet Street in Leetsdale
Left Branch AR 123 Bridge (Newton County, Arkansas)
Lost through truss bridge over Left Branch Big Creek on AR 123Replaced by new bridge in 2000
Lefty O'Doul Bridge (1933) (San Francisco County, California)
Built 1932Pratt truss variant Bascule bridge over China Basin on Third Street in San FranciscoOpen to traffic
Lehigh Canal Bridge (Northampton County, Pennsylvania)
Built 1910; rehabilitated 1949Through truss bridge over Lehigh Canal on High Street in GlendonIntact but closed to all traffic
Lehigh Gap Bridge (Lehigh County, Pennsylvania)
Built 1930; rehabilitated 1984Pratt deck truss bridge over Lehigh River on PA 873Open to traffic
Lehigh Street Bridge (Lehigh County, Pennsylvania)
Built 1908; rehabilitated 1947Deck truss bridge over Lehigh River on PA 1014 (Lehigh Street) in HokendauquaReplaced by a new bridge
Lehigh Valley RR - Coxton Bridge (Luzerne County, Pennsylvania)
Built in 1926, abandoned ca. 1980; demolition begun Oct. 2017Abandoned Pratt through truss bridge over North Branch Susquehanna River on Abandoned Lehigh Valley RailroadDerelict/abandoned for decades; demolished October 2017
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