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.


Slates Mill Bridge (Lackawanna County, Pennsylvania)
Built 1885 by the King Iron Bridge Co.
Through truss bridge over South Branch Tunkhannock Creek on TR 439 at Lackawanna State Park
Removed but not replaced

Slay Bridge (Clarke County, Mississippi)
Bypassed by a new bridge in 1975
Abandoned pratt pony truss bridge over Bucatunna Creek on former CR 670 (Linton Rd)
Abandoned

Slayden Bridge (Gonzales County, Texas)
Built 1907
Through truss bridge over San Marcos River on CR 232
Open to traffic

Slough Creek Bridge (Dyer County, Tennessee)
Built 1950
Lost pony truss bridge over Slough Creek on Jackson Road
Replaced by a new bridge

Slough Creek CR 480W Bridge (Jasper County, Indiana)
Built ca. 1910
Lost Pratt pony truss bridge over Slough Creek on County Road 480 West
Replaced by a new bridge

SLR - Little Androscoggin River Bridge (Mechanic Falls) (Androscoggin County, Maine)
Pratt deck truss bridge over LITTLE ANDROSCOGGIN RIVER on St. Lawrence and Atlantic Railroad Company
Open to traffic

SLR - Royal River Bridge (Cumberland County, Maine)
Through truss bridge over Royal River on Railroad (SLR)
Open to traffic

Smalling Bridge (Carter County, Tennessee)
Built 1941
Pratt through truss bridge over Watauga River on Smalling Road
Open to traffic, one-lane bridge

Smart Ditch Bridge (Jackson County, Indiana)
Built 1908; replaced 1992
Lost pony truss bridge over Smart Ditch on IN 39
Replaced by new bridge

Smart Ditch CR 600E Bridge (Jackson County, Indiana)
Pratt through truss bridge over Smart Ditch on County Road 600 East
Closed

Smart Ditch CR 700E Bridge (Jackson County, Indiana)
Built ca. 1900
Lost Pratt pony truss bridge over Smart Ditch on County Road 700 East
Replaced by a new bridge

Smart Ditch SR 39 Bridge (Jackson County, Indiana)
Built ca. 1900
Lost Pratt pony truss bridge over Smart Ditch on State Road 39
Replaced by a new bridge

Smiley Bayou Bridge (Yell County, Arkansas)
Built 1924 by the International Steel & Iron Co.
Abandoned through truss bridge over Smiley Bayou on CR 54
Abandoned

Smith Bridge (Union County, Georgia)
Bridge was replaced in 1985. Road was paved by TVA during this time.
Lost Pratt through truss bridge over Nottely River on John Smith Road
Replaced by new bridge

Smith Chapel Road Bridge (Walker County, Alabama)
Built 1915, closed June 2013, replaced in summer of 2014
Pony truss bridge over Mill Creek on Smith Chapel Road in Carbon Hill
Replaced by a new bridge

Smith Creek Road Bridge (Moniteau County, Missouri)
Built ca. 1930
Pony truss bridge over Smith Creek on Smith Creek Road southwest of California
Open to traffic

Smith Crossing Bridge (Midland County, Michigan)
Built 1907
Through truss bridge over Tittabawassee River on Smith Crossing Road
Closed to all traffic

Smith River Bridge (Cascade County, Montana)
Built 1908
Through truss bridge over Smith River on CR 410
Open to traffic

Smith Road Bridge (Crawford County, Pennsylvania)
Built ca. 1888 by Wrought Iron Bridge Co.; replaced 2012
Lost pony truss bridge over a branch of Conneaut Creek on TR 406 (Smith Road)
Replaced by a new bridge

Smith Street Bridge (Providence County, Rhode Island)
Built 1872; Replaced ca. 1981
Lost Pratt through truss bridge over Northeast Corridor (Amtrak) on Smith Street (US 44)
Replaced by new bridge

Smith's Bridge (Will County, Illinois)
Buiilt 1911; Replaced 1932
Lost Pratt through truss bridge over Des Plaines River on Road
Replaced by a new bridge

Smithfield Avenue Bridge (Providence County, Rhode Island)
Replaced ca. 1984
Lost Pratt through truss bridge over Northeast Corridor (Amtrak) on Smithfield Avenue (RI 126)
Replaced by new bridge

Smithland Bridge (Woodbury County, Iowa)
Lost Pratt through truss bridge over Little Sioux River on Road
Replaced by a new bridge

Smithton Bridge (Westmoreland County, Pennsylvania)
Built 1900 by the Pittsburgh Bridge Co.; rehabilitated 1935 and 1964; replaced 1986
Lost cantilevered through truss bridge over Youghigheny River on PA 981 in Smithton
Replaced by new bridge

Smokey Road Overpass (Fulton County, Illinois)
Built 1917
Pony truss bridge over the BNSF Railroad on E Smokey Rd
Open to traffic

Smoky Hill River Bridge (McPherson County, Kansas)
Built 1919; rehabilitated 1989
Through truss bridge over Smoky Hill River on 1st Street
Open to pedestrians only

Smoky Hill River Bridge (Dickinson County, Kansas)
Built 1915
Through truss bridge over Smoky Hill River on Oat Road, 2.5 mi. east and 0.8 mi. south of Detroit
Closed to all traffic

Smolen-Gulf Covered Bridge 35-04-64 (Ashtabula County, Ohio)
Built 2008
Modern covered bridge over the Ashtabula River on CR 25 near Ashtabula
Open to traffic

Smothers Creek Bridge (Lavaca County, Texas)
Built 1930
Through truss bridge over Smothers Creek on CR 183
Open to traffic

Smothers Creek CR 250E (Daviess County, Indiana)
Built ca. 1900; Removed but not replaced
Lost Pratt through truss bridge over Smothers Creek on CR 250 E
Removed but not replaced

Smyth Road Bridge (Oconto County, Wisconsin)
Built 1928
Through truss bridge over North Branch Oconto River on Smyth Road
Open to traffic

Snag Creek Bridge (Cedar County, Missouri)
Built 1915 by the Canton Bridge Co.
Pony truss bridge over Snag Creek on CR 1101
Open to traffic

Snake Creek Bridge (Tulsa County, Oklahoma)
Built 1909
Through truss bridge over Snake Creek on 201st St. S.
Intact but closed to all traffic

Snake Creek Bridge (Blaine County, Montana)
Built 1911
Pony truss bridge over Snake Creek on CR 323
Open to traffic

Snake River Bridge (Teton County, Wyoming)
Built 1910; rehabilitated 1960
Pratt through truss bridge over Snake River on CR 22-11 in Hoback
Open to traffic

Snake River Bridge (Nome Census Area, Alaska)
Replaced
Lost Pratt through truss bridge over Snake River on Bob Blodgett Highway
Replaced by a new bridge

SNETT - Triad Bridge (Worcester County, Massachusetts)
Abandoned Pratt deck truss girder bridge over Blackstone River, P&W Providence Main on Southern New England Trunkline Trail
Derelict/abandoned

Sni-A-Bar Creek Route H Bridge (Jackson County, Missouri)
Built 1929
Pratt through truss bridge over Sni-A-Bar Creek on Route H
Lost

Snider Bridge (Adams County, Iowa)
Built 1885 by Reeve, Ward and Keepers of Clinton, Iowa
Pony truss bridge over Kemp Creek on 220th Street, west of Corning
Open to traffic

Snoqualmie Falls Motel Covered Bridge (King County, Washington)
Built 1986
Pratt through truss bridge over Railroad Avenue (Washington State Route 202)


Snoqualmie Valley Trail - Reinig Bridge (King County, Washington)
Built 1916; Abandoned 1980; Converted to pedestrian use
Pratt through truss bridge over Snoqualmie River on pedestrian walkway
Open to pedestrians

Snow Hill Bridge (Miami County, Indiana)
Built ca. 1880; replaced 1990
Lost Pratt through truss bridge over Big Pipe Creek on County Road 700 East
Replaced by a new bridge on a different alignment and then demolished.

Snyder Bridge (Polk County, Iowa)
Built 1898, Removed ca. 1975
Lost Through truss bridge over Des Moines River on 128th Street
No longer exists

Snyder Hollow Bridge (Ulster County, New York)
(Main design: Double-intersection Warren through truss)
Built 1883; Replaced 1998
Lost Double-intersection Warren through truss bridge over Esopus Creek on Woodland Valley Road
Replaced by new bridge

Sock Road Bridge (Dodge County, Wisconsin)
Built 1893; Demolished 1980
Lost Pratt through truss bridge over Beaver Dam River on Sock Road in Town of Lowell
Demolished 1980, replaced by new bridge

Soda Creek Road Bridge (Shasta County, California)
Built 1930
Pony truss bridge over Soda Creek on Soda Creek Road
Open to traffic

Soeth Road Bridge (Glenn County, California)
Built 1900
Pratt Through truss bridge over Stony Creek on Soeth Road
Open to traffic

Soldiers Grove Bridge (Crawford County, Wisconsin)
Built 1910, destroyed 2008
Lost through truss bridge over Kickapoo River on A Street in Soldiers Grove
Removed and sold for scrap

Sonora Road Bridge (Preble County, Ohio)
Built 1902
Through truss bridge over Twin Creek on TR 455
Open to traffic

Soper Road Bridge (Clinton County, New York)
Built 1910; rehabilitated 1960
Through truss bridge over Saranac River on Soper Road
Open to traffic

SOU - Second Broad River Bridge (Rutherford County, North Carolina)
(Main design: Parker through truss)
Abandoned bridge over Second Broad River on Abandoned Southern Railway
Derelict/abandoned

Souris River Bridge (McHenry County, North Dakota)
Built 1902
Through truss bridge over Souris River on Railroad Road, 4 mi. north of Towner
Open to traffic

South Boat Ditch Bridge (Clark County, Arkansas)
Built ca. 1928
Through truss bridge over South Boat Ditch on CR 8
Open to one-lane traffic

South Branch Bridge (Brown County, Illinois)
Pony truss bridge over South Branch of Little Missouri Creek on CR500E, 4.5 mi. northwest of Mt Sterlin
Open to traffic

South Branch Kokosing TR 184 (Penlan Rd.) Bridge (Morrow County, Ohio)
Built 1880 by the Massillon Bridge Co.; rehabilitated 1995, replaced between 2009 and 2011
Pony truss bridge over South Branch Kokosing River on TR 184 (Penlan Rd.)
Gone, replaced with concrete bridge

South Branch Roaring Creek Bridge (Northumberland County, Pennsylvania)
Built 1887 by the King Iron Bridge Co.; reconstructed 1983
Through truss bridge with steel arch reinforcement over South Branch Roaring Creek on TR 802
Closed to all traffic

South Branch Salt Creek Bridge (Tama County, Iowa)
Built 1907
Through truss bridge over South Branch Salt Creek on U Avenue
Closed to all traffic

South Branch Wild Rice River Bridge (Clay County, Minnesota)
Built 1915
Pratt Pony truss bridge over South Branch Wild Rice River on CR 183
Open to traffic

South Bridge (Pottawattamie County, Iowa)
Lost Pratt through truss bridge over Nishnabotna River on Road
Replaced by a new bridge

South Bridge (Franklin County, Iowa)
Lost Pratt through truss bridge over Iowa River on Apricot Avenue
Replaced by a new bridge

South Bridge (Fillmore County, Minnesota)
Lost Pratt through truss bridge over South Branch, Root River
Demolished

South Broadway at River Des Peres Bridge #1 (St. Louis, Missouri)
Replaced 1925
Lost Pratt deck truss bridge over River Des Peres on South Broadway in St. Louis
Replaced by new bridge

South Cairo Bridge (Greene County, New York)
Lost Pratt through truss bridge over Catskill Creek on Sandy Plains Road
Replaced by a new bridge

South Canal Bridge (Essex County, Massachusetts)
Abandoned pratt pony truss bridge over South Canal on Road
Abandoned

South Chequest Lake Creek Bridge (Davis County, Iowa)
Built 1963
Through truss bridge over South Chequest Lake Creek on Yoke Blvd
Open to traffic

South Cottonwood River Bridge (Marion County, Kansas)
Built ca. 1930
Pony truss bridge over South Cottonwood River on Goldenrod Road, 1.5 mi. west and 2.0 mi. south of Hillsboro
Open to traffic

South County Line Road Bridge (Montcalm County, Michigan)
Built 1880; Replaced 1996; Relocated
Relocated Pratt through truss bridge that was over Flat River on South County Line Road near Greenville
Relocated to Fred Meijer Heartland Trail and replaced by new bridge

South Cross Creeks Bridge (Stewart County, Tennessee)
Built 1902 by the American Bridge Company
Abandoned Pratt through truss bridge over South Cross Creek
Abandoned

South Deer Creek Bridge (Douglas County, Oregon)
Built 1967
Half-hip Pratt pony truss bridge over South Deer Creek on CR 16
Open to traffic

South Fabius River CR 289 Bridge (Knox County, Missouri)
Built ca. 1890; replaced 2003
Lost through truss bridge over South Fabius River on CR 289
No longer exists

South Flat River Bridge (Person County, North Carolina)
Built circa 1910 by the Champion Bridge Co. of Wilmington, OH; Abandoned and replaced circa 1981.
Abandoned Pratt pony truss bridge over South Flat River on Formerly NC-1120
Abandoned

South Fork Big Nemaha River Bridge (Nemaha County, Kansas)
Built ca. 1930; replaced 1994
Lost through truss bridge over South Fork Big Nemaha River on a local road
Replaced by new bridge

South Fork Cane Creek Bridge (Carter County, Missouri)
Built 1922
Pony truss bridge over South Fork of Cane Creek south of Ellsinore on CR 256 (Old US 60)
Open to traffic

South Fork Creek Bridge (Warren County, Illinois)
Built ca. 1910
Pony truss bridge over South Fork Creek on 1st St
Open to traffic

South Fork Gualala River Bridge (Sonoma County, California)
Current bridge installed 1984, likely multiple previous bridges at this location
Lost Pratt deck truss bridge over South Fork Gualala River on Stewart's Point Skagg Springs Road
Replaced by new bridge

South Fork Main City Road Bridge (Cass County, Missouri)
Built ca. 1905; Replaced 2013
Bedstead Pony truss bridge over South Fork on Main City Road
Replaced by a new bridge

South Fork Patoka River Bridge (Pike County, Indiana)
Built ca. 1920; replaced 1998
Lost through truss bridge over South Fork Patoka River on CR 300 E
Replaced by new bridge

South Fork Patoka River Houchin Ditch CR 400 E (Pike County, Indiana)
Built ca. 1905; Replaced 1990
Lost Pratt pony truss bridge over South Fork Patoka River Houchin Ditch on CR 400 E
Replaced by a new bridge

South Fork Pine Creek Bridge (Armstrong County, Pennsylvania)
Built 1912; rehabilitated 1973
Pony truss bridge over South Fork Pine Creek on TR 529
Unknown status

South Fork Prairie Creek CR 300 E (Daviess County, Indiana)
Built ca. 1905; Replaced 1988
Lost Pratt pony truss bridge over South Fork Prairie Creek on CR 300 E
Replaced by a new bridge

South Fork Prairie Creek CR 575 E (Daviess County, Indiana)
Built ca. 1905; Replaced 1990
Lost Pratt pony truss bridge over South Fork Prairie Creek on CR 575 E
Replaced by a new bridge

South Fork TR 242 Bridge (Monroe County, Ohio)
Built by the Bellefontaine Bridge & Iron Co.
Pony truss bridge over South Fork on TR 242
Replaced by a new bridge

South Fork US 65 Bridge (Van Buren County, Arkansas)
Built 1931 by M.K. Orr of Little Rock; rehabilitated 1962; Replaced 2011
Three-span cantilevered deck truss bridge over South Fork Little Red River on US 65 in Clinton
Replaced by new bridge

South Fork Wildcat Creek CR 530E Bridge (Clinton County, Indiana)
Built ca. 1895 by the Lafayette Bridge Company
Lost pony truss bridge over South Fork Wildcat Creek on CR 530 E.
Replaced by new bridge

South Fork Wildcat Creek SR 38 Bridge (Tippecanoe County, Indiana)
Built 1916; rehabilitated 1978; replaced 1993
Lost through truss bridge over South Fork Wildcat Creek on IN 38
Replaced by new bridge

South Fork Wolf River Bridge (Brown County, Kansas)
Built ca. 1940
Pony truss bridge over South Fork Wolf River, 1.3 mi. east and 4.5 mi. north of Everest
Open to traffic

South Grand Avenue Bridge (Pettis County, Missouri)
Built in 1889 at at another location, relocated here 1904
Two-span through truss bridge over Flat Creek on South Grand Avenue, south of Sedalia
Open to one-lane traffic

South Greenfield Overpass (Dade County, Missouri)
Built 1924; replaced 1996
Lost Pratt through truss bridge over BNSF Railroad on Old MO 39
Replaced by new bridge

South Henderson Creek Bridge (Henderson County, Illinois)
Built 1915
Pony truss bridge over South Henderson Creek on CR1800E
Open to traffic

South Island Bridge (Will County, Illinois)
Pony truss bridge over East Branch Kankakee River on West Street, 0.25 mi. north of Kahler Rd
Now resides as a display at DDD Construction in Coal City.

South Loup River Bridge (Custer County, Nebraska)
Built 1930
Pony truss bridge over South Loup River on Township Road
Open to traffic

South Main Street Bridge (Trumbull County, Ohio)
(Main design: Pratt through truss)
Built about 1887 (based on design ques) by Columbia Bridge Co., replaced 1918
Lost Pratt through truss bridge over Mahoning River on South Main Street
Replaced by a new bridge

South Park Bridge (Old) (King County, Washington)
Built 1931
Bascule bridge over Duwamish River on 14th Avenue South in Seattle
Demolished. Main span removed September 1, 2010.

South Park Street Bridge (Jefferson County, Colorado)
Built 1926; rehabilitated 1992, rebuilt 2014
Pony truss bridge over Bear Creek on South Park Street in Morrison
Open to traffic

South Raccoon River Bridge (Guthrie County, Iowa)
Built or relocated here 1948
Pony truss bridge over South Raccoon River on CR N70 (Locust Avenue)
Open to traffic

South River CR 402 Bridge (Marion County, Missouri)
Built ca. 1930, replacing an earlier bridge
Pony truss bridge over South River on CR 402, east of Palmyra
Open to one-lane traffic

South Sauty Creek Bridge (De Kalb County, Alabama)
Abandoned pratt through truss bridge over South Sauty Creek on Jones Rd
Derelict/abandoned/collapsed

South Shore - Gauntlet Bridge (Lake County, Indiana)
Pratt through truss bridge over Pennsylvania Railroad/Wabash Railroad on Chicago. South Shore. & South Bend Railroad
Replaced by a new bridge, reportedly in storage in Michigan City

South Skunk River Bridge (Polk County, Iowa)
Built 1928
Pratt through truss bridge over South Skunk River on 158th Avenue (158th Ave)
Open to traffic

South Skunk River Bridge (Jasper County, Iowa)
Built 1899; Demolished 2014
Lost Through truss bridge over South Skunk River on 126th Avenue
Demolished in 2014. New concrete bridge opened in 2015.